SEA - YYZ

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SEA — YYZ
20 May — 27 May1
Return
1 adult
Economy
0 bags
From?
To?
Fri 20/5
Fri 27/5

Good to know

Low season

January

High season

November

Cheapest flight

C$ 420

Average price round-trip

C$ 648

Good deal round-trip

C$ 513

Good deal one-way

C$ 388
Best time to beat the crowds (35% less expensive on average)
Most popular time to fly (20% more expensive on average)
Flight from Seattle/Tacoma Intl to Toronto Pearson Intl
(avg. price over the last 2 weeks)
or less
or less

When to book flights from Seattle to Pearson Intl

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 388 or less one-way and C$ 513 or less round-trip.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be October, November and December. The cheapest month to fly is January.
  • Morning departure is around 60% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Seattle to Toronto Pearson Airport flights

Top airline flying Seattle/Tacoma Intl to Toronto Pearson Intl

Scores according to KAYAK customer reviews
7.1
Air CanadaOverall score based on 25044 reviews
7.4Boarding
7.0Comfort
7.7Crew
6.9Entertainment
6.5Food
Airline reviews
Cons: "Food was mediocre, I’d expect a bit more for the price paid."
Read more about Air Canada
Cons: "Food was mediocre, I’d expect a bit more for the price paid."
Pros: "Nothing"
Cons: "Took 3 hours to get our drinks. Completely out of inventory with food and snacks. Very hot on the plane . WiFi didn’t work/ they charged for headphones which i haven’t even heard of. My tray table was completely crooked , i had to place my drinks on my husbands table. Overall, just terrible."
Pros: "Passengers were kept well-informed by staff on flight status. Boarding process was efficient. Gate agents and crew were professional and friendly. Appreciated the in-flight entertainment."
Cons: "Seating was cramped and claustrophobic. I'm only 5 feet tall and my legs were stiff after a 90 minute flight. "Snacks" were kind of pathetic - tiny bag of pretzels. The worst part was the crowded gate area at Boston. It made me feel like a cattle holding pen. Since we're told to get there two hours early, it would be nice to have more than a tiny little snack bar with overpriced pre-made sandwiches and salads that have been sitting out for who knows how long. Crappy lukewarm coffee. Starbucks is right outside security, but of course we can't bring liquids through."
Pros: "I am 6ft 1 / 185cm and the leg room was OK for an economy flight. Food was OK for airplane food. Staff were very friendly. Overall very happy."
Pros: "Movies available. Food available for purchase."
Cons: "It was crowded in the back of the aircraft. Many vacant rows were available, but my advance check in and seat change / upgrade was not available on line. I would have paid to have moved up to an un-occupied section of the aircraft if I could have. My mistake. I should have got up and walked around looking for these vacant seats. Despite the captain announcing that WIFI Internet was available for purchase. There was no WIFI on this aircraft. I am a tech guy. The flight attendant said just use your credit card. NO there was no WIFI available."
Pros: "Our connecting flight was cancelled due to weather. That is truly out of the airline’s control. What is in their control is communicating the status of the flight with us. When we checked in they took email addresses and cell phone numbers for status updates. We never received any updates. Consequently we didn’t know the flight had been cancelled until it was too late to make an adequate adjustment. On top of that we had to deal with the worst customer service rep in the world at the ticket booth when we struggled to make alternate plans. Completely unsatisfactory experience."
Cons: "Nothing."
Pros: "The staff were great!! Always helpful and very friendly! The added flight from Ottawa to Toronto had fantastic staff as well. Would've been nice to have someone waiting for us at the Ottawa gate as we all missed our flights."
Cons: "The day was extended by 10 hours. It seemed like each time I was redirected including the added flight to Ottawa I was set up to miss a flight. I was sent to Ottawa because there wasn't enough oxygen on the flight to Toronto. 15 passengers missed our flight to Toronto because we left Fredericton late which put us on a new flight 2 hours later, that had mechanical issues so again a missed flight. I am happy they do their due diligence with safety, but it created a long day. They also had to stop food service before they got to me so I wasn't able to get food."
Pros: "everything"
Cons: "no entertainment"
Pros: "Smooth flight"
Cons: "Long walk to connecting flight. Buggy didn’t turn up"
Pros: "Ease of boarding - no long queues. Offer to put hand luggage in the hold with no charge."
Pros: "Wifi was great with very little disruptions. Service on the flight was expedient and frequent. In seat entertainment was excellent"
Cons: "I had the only seat on the row with no power for devices. All seats have USB power, but I was working on a laptop and had no AC power. The other seats did. This seems to be the case for the window seats on the right side of the plane and the aisle seats on the left side of the plane."
Pros: "As a professional musician, flying with my viola is one of the most nerve wracking experiences, as if it is forced to be checked due to insufficient room for overhead baggage, it could be completely destroyed. As stated in Air Canada's online policy, passengers traveling with musical instruments that fit as carry on baggage are allowed to change to earlier boarding zones. After approaching a staff member with my viola, I wasn't simply assigned an earlier zone, but rather I was allowed to board first. On this principle alone I will be flying Air Canada again. Thank you!!!"
Pros: "That we arrived in Toronto and got to get off the plane."
Cons: "The flight was delayed several hours. The rows are way too close together to be remotely comfortable, and the seats themselves are tiny and barely recline. Being 5 months pregnant, I was uncomfortable the entire flight. The "entertainment" that you have to download an app for didn't work, and particularly stung knowing how much we paid for the flights, and that other airlines simply put a TV on the back of each seat that is easy to connect headphones and view. The food on our previous flight had been so terrible we didn't bother on this trip, but it looked equally awful. My husband was in the aisle seat and the flight attendant repeatedly and without warning hit him with the cart. The flight attendants varied in level of friendliness, but the ones in our row rushed through service, and did not give us the options the other row had (ice in drinks, veggie or meat options). All in all, it was kind of a terrible flight experience."
Pros: "Air Canada's airplane cleanliness is second to none in my book. That's why I always fly with them... Or rather flew..."
Cons: "The unending stream of excuses and explanations failed to convince me that this was anything but mismanagement that caused a delay of 5 hours. We'd be told something, and told the exact opposite, or a contradicting statement 15 minutes later. You botched this one bad Air Canada."
Cons: "Extreme delays on my return flight which made me miss my connection and get rebooked on another flight for the next day. We were delayed on departure, then on the tarmac, then in the air, and finally when getting off the plane. I am glad that I was rebooked and was given a hotel to stay at, but I did not like the way I was treated by Air Canada staff at customs. I passed through customs only to be sent back into Canada after having crossed through security because the staff decided to close. We were told by other staff members that it was up to them to decide when they were done and to talk them. I ran through the whole airport with about 7 other people to make it. Why make us cross through security only to send us back? There was no one there to guide us on what to do. I had to go through the whole thing again the following day only to have my face cream taken away (it is technically cream, not a liquid) and then be detained. None of this happened AT ALL the day before. I'd give more details but it was a complete mess."
Pros: "None"
Cons: "Better luggage Service"
Pros: "movie selection on international flight was great."
Cons: "Had a serious delay, which was not acknowledged in anyway. We just waited near the gate for a long, long time. Also, for one of my flights, my group number was never called. I asked the flight attendant about it (when I passed through the gate after most other customers had boarded) and she flippantly responded with something like, "Yeah, maybe I didn't call your boarding zone. I don't know. Whatever." This left a terrible first impression on me."
Pros: "Nothing. NOTHING."
Cons: "It took two hours to check my bag at the airport. The plane engine needed to be jump started, and I missed my connection flight to Paris. I had to spend an entire day stuck in Toronto, sick from terrible Hotel and airport food, cheap vouchers for terrible food, I missed my traveling companion who made the flight to Paris. I left my hat on the plane after the terrible flight in which they refused us any basic courtesies for the numerous passengers who were about to be stranded, and then the grooming crew kept my hat instead of turning it in to lost and found. Best part? Customer service told me that since I booked via Kayak, that I was not a valued customer and that they would not extend any courtesies to me for destroying my work trip itinerary."
Pros: "The pilots were professional, got us there on time and did a wonderful smooth landing."
Cons: "The flights attendants uniforms were wrinkled and old, tired and worn out looking, their behaviour was the same. They were pretty much tired and disinterested in their job. Time to hire new blood, get new, fresh looking uniforms, and there definitely should be a weight limit, I have seen flight attendants who have to turn sideways to get down the aisle comfortably, what on earth would they do in an emergency. Yes size does matter. Look to JAP airlines for style and dignity in the job. Having said that I love Air Canada and fly it as often as possible home."
Pros: "I didn't like anything."
Cons: "I was stuck in immigration for about an hour. The screening process at this airport is so laborious. You have to wait on a bench until they call your name and they don't care if your flight is about to be boarding. I understand that immigration is necessary but they could at least have people form a queue instead of having us wait for our names to be called. I told them that my flight would be boarding in 25 minutes and they told me "Oh, don't worry, they'll just put you on the next flight". But when I got to my airline to check in, they charged me $150. I needed that $150 to pay some bills when I got back home."
Pros: "Seats were ok but a bit cold all the way."
Cons: "One hour late leaving, no reason or information given. Food was awful with green sauce on chicken and celery bits in milk for salad, the connecting flight was cancelled and the option was another flight in two days. The only flight going later that evening was full and the next day was full also they said. An hour later a bus service was offered leaving in ten minutes which many of us raced to catch on our own with no one to show us how to get to the bus. The bus we were told to look for was the wrong bus. Of course our luggage didn't make it and that took another hour to register at our destination as every one else on the bus didn't get their luggage either. Bus driver got lost but passengers were able to show him the way. This is the third time in four flights Air Canada has lost our luggage. The worst was the NO ONE ever smiles, we were watching for it, and certainly NO ONE ever says we are sorry you are inconvenienced which would go a long way to make the delays and changes more tolerable."
Pros: "Friendly service is so important to me - and the staff and flight crew at Air Canada met all my expectations. I had the displeasure of flying United on the way to Seattle and I must say the service at Air Canada is far above!"
Pros: "The seats were fairly comfortable for such a small plane."
Cons: "There was no meal on an international flight of more than four hours."
Pros: "Movies"
Cons: "Food was terrible especially for Prem economy. Chicken dish very bad. Difficult to get a second glass of wine with main meal."
Pros: "Nothing!"
Cons: "Flight canceled due to mechanical problems. Out of 4 agents at desk at airport only one knew what to do in case of a cancellation. They all stood around eating raisinettes! Unprofessional, lack of training, lack of planning (why wasn't another plane sent). One agent was going through the line giving out a phone number to call? Why weren't they trained? I called and thankful I was up at the desk so I could tell the agent what to do from the lady on the phone! Lost a day on our already short Christmas visit with family. Would love a refund!"
Pros: "Entertainment and food were nice. There were two meals, one would have been fine, but both were great."
Cons: "The check in counter in Dublin was horrendous. I was forced to check a luggage that was my carry-on on the outgoing flight so there was no reason it was not going to fit on the upper compartment, but the counter agent forced me to check it anyway, even with it being under weight limit. The line was huge and there were 5 counter agents, but 3, and at times 4 agents, at a time, were only pulling from the priority boarding line. We had to wait more than one hour to check in. Than to the boarding, the same people from the counter were the boarding agents. The boarding was extremely slow and again unorganized."
Cons: "Numerous people had oversize carry on luggage that should have been checked. The passengers like me had smaller than regulation carry on but there did not seem to be room in the overhead compartments."
Pros: "Food was good and flight attendants were very professional. Our first time flying Air Canada and I was very impressed!"
Cons: "To pay so much for a transatlantic flight and have to pay $10 for an IPad on the 8 hour trip home??? It would be nice if even limited internet was included so we could use our own device. The worse experience was getting through customs at the airport in Barcelona on the way home. Only two agents available to stamp passports on a Sunday morning when the world's largest cruise ship (Royal Caribbean Harmony of the Seas) had docked earlier that morning? We arrived at the airport at 8:30 and no Air Canada agents were available to check us in until 9:00. After waiting to get through customs and we proceeded to our gate, our 11:45 flight was just beginning to load! Lots of shoving and people cutting line to avoid being late for their flight. I heard one person mention they had missed their flight, and I'm certain many others did as well. With the chaos and delay, I'm surprised altercations didn't happen. The airports/airlines need to work with the local authorities to avoid these delays and provide their customers better service."
Pros: "Both planes were nice. Attendants were pleasant. Food and entertaining were great."
Cons: "Flight from Paris to Toronto was delayed 4 hours. That automatically caused us to miss our connecting flight from Toronto to Nashville. The 1st flight turned out to be more than 4 hours late. The 2nd flight was delayed as well. Not to mention we were directed many places throughout the Toronto airport trying to locate a boarding pass for the 2nd flight in hopes to make it to Nashville that day. All members of the Air Canada staff were helpful, however traveling for over 20 hours majority of which was spent in foreign airports made for a long and unpleasant day. It would have been different had it been our fault for being late or missing a flight, but we were very early for our international flights which simply added to the amount of time we had to sit, wait, and hope. A coupon was given to us, however being that I live in a different country I don't know how quick I will be able to redeem this."
Pros: "Very pleasant flight; excellent entertainment options to while away the time. Excellent crew: food and comfort as good as it gets these days in Economy."
Cons: "Boarding was confusing. Announcements were difficult to hear in the terminal; there was a step requiring all passengers to queue up as if boarding but instead it was a passport/boarding pass check. The two queues were not labeled, there was much line-switching, and the passport-check lines blocked the terminal for travelers for other flights... The incoming plane was late; we wondered why this passport check could not have proceeded while we waited instead of delaying our boarding once our plane arrived."
Pros: "Not much"
Cons: "I was too tall for the seats and the person in front of me was unable to put there seat back, they wanted me to trade with someone else but the. I just would have been a problem for someone else. The steward made me feel as though I was at fault because I should have payed the extra 100 to have emergency exit seating, they tried to get me to sit in the very back row of the plain and sit sideways across the two seats which means I would not be able to sit next to my fiancé. The whole thing was embarrassing and very rude, maybe people of 6'6" should be charged for emergency exit!!"
Pros: "I was not charged overweight for going over by 2 pounds since I had a Business Class ticket connection to my final destination."
Cons: "For an almost 4 hours, 400 USD international flight I would have expected to have at least a snack to eat a one luggage to check in on the price. I am an international traveler which doesn't have a choice but to carry a suitcase. Not to say that once on board I was requested to check in my carry on because there was no room on the plane and that I had to travel with my personal item on my feets since there was no available room at the over the head compartiment since I was identified with Zone 5 boarding."
Pros: "Service in the cabin was great."
Cons: "Can't think of anything"
Cons: "Flight was delayed 3 hours"
Pros: "Comfort. Individual screens"
Pros: "Superb experience all around....comfortable, clean, good entertainment, on-time, good food curteous crew!"
Cons: "Nothing- we will definitely travel with you again!"
Pros: "The flight was on time"
Cons: "This was an overnight flight and we had our seats changed to the back row without being told. The seats would not recline and when the seats in front of us reclined for the entire flight, the screen and chair were about a foot from our faces. This was hands down the worst flight I have ever had. The flight crew Wulf not move us as the flight was full, and despite there being more than half of the first class seats available, they would not let us sit there. I will likely not fly air canada again given this experience."
Pros: "Food was good, service good in business cabin"
Cons: "We left late, and despite it being obvious we were going to leave late, all the information posted at the gate and on the web said on time. Why is it that airlines don't tell the truth about departures and arrivals times?"
Pros: "I accidentally left my tablet behind when I disembarked. The crew located it and brought it to me speedily while I waited in the baggage area. I'm truly grateful and impressed. All of the flight crew were delightful and thoughtful."
Pros: "The crew was doing the best they could and was professional."
Cons: "Where to start, I have taken Air Canada 1 time before to Regina and you lost my luggage, luckily it was on the flight home. This time check in was very disorganized and unprofessional (I got scolded when my luggage bumped the post that forms the line that was set up after half the passengers were there making the last to show up first in line.) The flight was delayed and hour for a broken air mask upon departure . The monitor screens were hard to see and harder to hear. Upon arrival we sat for 30 minutes because they couldn't shut the engines down. Customs was a breeze but the walk from terminal to customize to the next terminal had me winded, luckily my connecting Air Canada flight was late also . And this was the better part of my experience. My flight to Athens was miserable ( lots of screaming children spread out through the plane). And when I thought it was over my luggage was separated and lost for 3 days. I should send you the underwear as a reminder of my experience"
Pros: "My seat on my first leg coming back to New Tork from Tokyo to Toronto."
Cons: "I booked my flight 8 months in advance and pre ordered a vegetarian meal a week before leaving for my trip. They "forgot" one of my meals (breakfast meal) on my return flight home. Hey also gave me a tuna sandwich for my snack, which means they also didn not have a vegetarian sandwich for me in between my dinner and breakfast meals. It was the first time every traveling overseas that they've made an error with my meal plan after flying on multiple airlines. My connection was a nightmare as I had to wait to go through security and customs which took over an hour and then my second flight was delayed. I will never fly through Canada again from the U.S. To another destination country."
Cons: "You"
Pros: "The crew was friendly but not overly helpful. There was a nice selection of entertainment options."
Cons: "The food was horrible and made me throw up. The flight was freezing and the seats hardly reclined making it very uncomfortable. Especially since we were on the plane an extra 2 hours from a delay. The flight delay caused me to miss my connection flight. And then I wasn't put on the next available one, I had to wait around in the airport for a very long time, 4 hours to fly home. My baggage was lost. And my credit card was charged twice for my checked bag. The customer service employees in the airport refused to help me with either issues. I am extremely unsatisfied with my experience on Air Canada and will never be flying with it again."
Pros: "That the plane didn't crash."
Cons: "When I flew to Toronto the plane left 15 mins late but arrived an hour an twenty min late. No turbulence or trouble, just late. I stepped off that plane to my connector to Paris when boarding was suppose to start but that plane was on an hour delay. The food is just horrible, anyone who has flown knows this, and on both flights first class was the only priority. They got to everyone else when it was convenient. This was my first time flying with Air Canada and will certainly be my last. I'll happily pay a little more for the other airlines. So if you fly with them, good luck to you."
Cons: "My daughter got destroyed by a cup of coffee a passenger behind her was holding when turbulence struck quiet bad,neither he or the airline apologizes for either."
Cons: "The fight itself was fine. Not great. Not terrible. But the airline lost my son's suitcase and has been entirely unhelpful ever since then. Now we have been stuck in a foreign country without clothes and toiletries for 36 hours and Air Canada's "helpline" has been anything but helpful. They can not find any information on the location of the suitcase and hope that they will find it in another 48 hours. Rediculous!! I will never fly them again and suggest that you save your money, effort and vacation by flying with another airline."
Pros: "Normal economy flying, you get a seat and line to the bathroom. I am thankful we are not traveling the old ways. I am over expecting too much when you don't pay much for it."
Cons: "Paid for breakfast but did not get it. However, I did not say anything to the attendant."
Pros: "Generally OK Food quite good, relatively"
Cons: "30 mins delay Cramped even for Economy"
Pros: "Not much. This first experience with Air Canada left me thinking it must be a severe-discount carrier."
Cons: "By the end of Group 4 boarding they were already taking carry-on bags at the jetway to check into the baggage compartment. We had a 1:05 connection in Toronto to catch our flight to London. They could give us no assurances that our luggage would make the connection. Thankfully we were able to talk our way onboard and found space to store our bags. When I was finally seated I had to warn the person seated in front of me to please not recline. Sitting with my back flush to the seat, my knees were literally in contact with the chair in front of me. There was ZERO room for that passenger to recline without causing me great pain. I sat on our five hour flight in great discomfort. Adding to my discomfort was a lack of food and zero entertainment. Paying for food is fine and I did it but on such a long flight it seems abusive. Food should be provided on longer journals. That all all I could do was read was also fine but video and Internet are increasingly expected and this flight had neither. I'll have doubts about ever flying Canada Air Rogue again."
Pros: "I never could take this flight as Air Canada, with its unwelcome policy, needs a transit visa to change flights in Toronto. The sad part is, vayama and Air Canda (mis-spelled on purpose - deserves even less respect) do not even offer a partial credit if I want to cancel. Never am I going to use any of these or perhaps visit a bass-ackwards country like canada"
Cons: "I never could take this flight as Air Canada, with its unwelcome policy, needs a transit visa to change flights in Toronto. The sad part is, vayama and Air Canda (mis-spelled on purpose - deserves even less respect) do not even offer a partial credit if I want to cancel. Never am I going to use any of these or perhaps visit a bass-ackwards country like canada"
COVID-19 information

Safety measures for airlines flying from Seattle to Toronto Pearson Airport

Airlines flying from Seattle to Toronto Pearson Airport have enacted additional safety measures and adjusted policies to better accommodate travellers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Seattle to Toronto Pearson Airport

Mandatory masks

Masks required on board, masks provided on flights from Seattle to Toronto Pearson Airport

Social distancing seating

Middle seats unavailable to book on flights from Seattle to Toronto Pearson Airport

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Seattle to Toronto Pearson Airport

Flexible cancellations

Waiving of change fees. Search flexible flights from Seattle to Toronto Pearson Airport

Book cheap flights from Seattle to Toronto Pearson Airport

Recent round-trip flight deals

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Seattle - Toronto Pearson Airport Flights

Departure:

Seattle (SEA)United States

Destination:

Toronto Pearson Airport (YYZ)Canada

Return flight deals:

Toronto Pearson Airport - Seattle

Cabin classes:

C$ 513

Browse origins:

C$ 420