C$ 76 Find Cheap Flights from Washington to Ontario

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Low seasonJanuary
High seasonAugust
Cheapest flightC$ 76
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (13% more expensive on average)
Flight from Seattle to Hamilton

FAQs for booking flights from Washington to Ontario

  • How does KAYAK find such low prices on flights from Washington to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington to Ontario is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington to Ontario with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Ontario?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ontario is Toronto Pearson Intl Airport (YYZ), with an average flight price of C$ 271.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday when round-trip tickets can be as cheap as C$ 801. On the other hand, the most expensive day to fly is Tuesday, when round-trip prices are C$ 1,333 on average.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally in the evening, when round-trip flights cost C$ 357 on average. Morning departures are around 136% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 843.

  • What is the cheapest flight to Ontario?

    The cheapest ticket to Ontario from Washington found in the last 72 hours was to Toronto Pearson Intl Airport, at C$ 325 round-trip. The most popular route is Seattle (SEA) to Toronto Pearson Intl Airport (YYZ) and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 325.

  • What is the cheapest month to fly from Washington to Ontario?

    The cheapest month for flights from Washington to Ontario is September, when tickets cost C$ 478 (return) on average. On the other hand, the most expensive months are June and January, when the average cost of round-trip tickets is C$ 988 and C$ 819 respectively.

  • How far in advance should I book a flight from Washington to Ontario?

    To get a below-average price on the flight from Washington to Ontario, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

  • How long is the flight to Ontario?

    An average direct flight from Washington to Ontario takes 10h 43m, covering a distance of 5336 km. The shortest route is Seattle (SEA) to Toronto Pearson Intl Airport (YYZ) with an average flight time of 4h 37m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Toronto (95% of total searches to Ontario). The next most popular destinations are Ottawa (3%) and London (1%). Searches for flights to Sault Ste Marie (0%) are also popular.

Top 4 airlines serving from Washington to Ontario

Need help choosing which airline to fly with from Washington to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9968 reviews
7.9Comfort
8.2Boarding
7.1Entertainment
7.1Food
8.5Crew
Airline reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

2.0 MediocreAnonymous, Apr 2025SEA - BOI
Read more Alaska Airlines reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Need to get on train for second flight it’s much nicer when all the gates are together for obvious reasons

Cramped, crowded aircraft. Poorly organized boarding. Tasteless crackers to eat. 40 minutes late. A standard US air travel experience.

Made us check our carry on,even though there was plenty of room because they didn't check with the flight crew. Also boarding was 40min late, due to the plane being on the wrong side of the airport. Also their app didn't record my tsa precheck

Would not mind having movie options an available like Delta, but is not necessary. Did not have food, so cannot appropriately rate that section.

Three hour flight so snacks and basic drinks unless you pre buy as usual. Didn’t do my emtertainment as was tired after 23 hours of travel. You have to use your own device on US flights if travelers aren’t aware so if you only use your cell phone that can be small. Crew are great.

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

Flight was smooth, but the overhead bins were not deep enough to stow bags vertically and we ran out of room - even with 8 passengers voluntarily gate-checking their bags.

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

My suitcase was completed destroyed. The top part is broken and unusable now.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Liked nothing. As per previous segment it was delay delay delay.

In general ok, my only issue is that they had no hot items for purchase. I had very little time in my connection due to baggage/customs/TSA, thag I barely even had a chance for a stop at the washroom and buy water, to make it to my gate when they started boarding. I had nothing to eat because the trip started early, so I was ready to purchase, and they had nothing except for dry items like snacks. I had to purchase a mediocre, overpriced cheese and fruit board, instead of at least a pizza or sliders that I was planning on getting. Other than that, it was fine. But that’s typical Air Canada, to not have enough.

Most disapointing experience. We were rerouted to Toronto, after a 7 hours flight , where we sat on the tarmac for a little over 4 hours, in a full airplain with no air. We were given a tiny cup of water twice during that wait. After the long wait we taxi out of toronto to wait another 30 min. Many people missed their conections including my kids and I. We were promised a hotel room in Montreal on the aircraft and at the exit of the aircraft, then directed to a desk after custom where me and my two kids were told that we do not get a room for the night and that we were on our own, after a back and fourth and stating what was told to us, the agent at the counter says that we are right and that we should have a room. I ask the lady if she could look into a different flight for us for the next day as I was with two you g kids and wanted them to get some rest. The gentlemen next to her jumps in and said there wss nothing without even (pretending) looking at their system, I insist and say that they could look for the kids. They seemed to have trouble with our reservation so they gave up. I told them that I needed to talk to a manager, they said there were no managers and that no one can do anything, to which I responded that there must be someone that could do something and that it does not make sense for them to repeat the same think as we are not undestanding each other. She threatns to call security and says I am rude. I say I will go, just give me the vouchers and ger response is “ not giving you the vouchers because you are rude”. I was not rude. It is normal to want to talk to a manager. I even said that the people at the counter were not resoonsible for the long journey and that there was nothing they could have done. But to threten and himiliate someone just because they ask for someone else to talk to ? I understand they are overwhelmed, but you know the quality and calibre of a company in the bad times not the smooth ones. I ended up leaving and paying for my own room and board.

The staff were the friendliest I have encountered in years. Absolutely great!

Plane changed to one with no entertainment system or ability to serve hot meals

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

No access to any entertainment No food other than a cookie or pretzels even tho flight was over the supper hour Seats very close together and very little leg room Staff was very good

Good. Would be better if the carry on baggage was free.

Horrible. I checked out myself that it seems that I can have a free carry-on. But they ask me to pay $75 when we are nearly boarding. It was tricky during check out that make you mistake that you can have a carry-on beside your personal item. Also they ask $75 in the airport instead of $35 during checkout. So the whole process is designed to make you this mistake

Westjet is one of the worst airlines in the world. 100% guaranteed to have flight delays and flight cancellations. Will never book again with Westjet.

The cancelation of my flight from Toronto to Edmonton without any solution given to me for my next flight. Very poor connection from Toronto to Edmonton

Too squished in seats. I'm 110 lbs and 5'6....can't imagine being any bigger and flying

Scrooge airlines spoiled my last chance at Christmas with my 95 and 92 year old folks. and rest of the family in Calgary. Ticket personnel would not let me on without a passport and I always visit Canada with my enhanced driver;s License when I travel from the US

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

This flight didn't happen for me because of overbooking.

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

The boarding was relatively quick, the crew welcoming and flight uneventful. The omission of meals on all airlines is unacceptable especially when the flight is during a mealtime such as this one, (lunchtime), is unacceptable.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

No Charging ports for personal electronics, which were required to use wifi entertainment.

Rushed, the boarding was a great deal like a Chinese fire drill.

it was red eye flight, it was ok, there was beverage service, thats it i didnt care much as i wanted to sleep

Everything went smoothly. I appreciate the selection of free movies.

Book cheap flights from Washington to Ontario

Recent round-trip flight deals

15/5jue.
1 stopWestJet
7h 56mSEA-YKF
16/5vie.
2 stopsWestJet
13h 40mYKF-SEA
C$ 151
15/5jue.
2 stopsWestJet
11h 21mSEA-YKF
16/5vie.
2 stopsWestJet
13h 40mYKF-SEA
C$ 176
3/6mar.
2 stopsAir Canada
10h 07mSEA-YTZ
24/6mar.
2 stopsAir Canada
13h 21mYTZ-SEA
C$ 388
3/6mar.
2 stopsAir Canada
12h 07mSEA-YTZ
24/6mar.
1 stopAir Canada
8h 16mYTZ-SEA
C$ 410
2/6lun.
2 stops
11h 25mPDX-YYZ
9/6lun.
1 stop
9h 22mYYZ-PDX
C$ 410
3/6mar.
3 stops
30h 13mSEA-YYZ
24/6mar.
1 stop
9h 41mYYZ-SEA
C$ 410
28/5mié.
directAlaska Airlines
4h 37mSEA-YYZ
3/6mar.
directAlaska Airlines
5h 19mYYZ-SEA
C$ 425
29/5jue.
directAlaska Airlines
4h 37mSEA-YYZ
5/6jue.
directAlaska Airlines
5h 19mYYZ-SEA
C$ 455
23/5vie.
1 stopUnited Airlines
17h 41mPDX-YYZ
27/5mar.
1 stopUnited Airlines
8h 30mYYZ-PDX
C$ 498
27/5mar.
1 stopUnited Airlines
11h 56mSEA-YYZ
3/6mar.
directUnited Airlines
5h 21mYYZ-SEA
C$ 498

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Recent one-way flight deals

16/6lun.
2 stopsWestJet
10h 16mSEA-YHM
C$ 76
16/6lun.
2 stopsWestJet
10h 21mSEA-YKF
C$ 78
11/6mié.
1 stop
13h 18mSEA-YHM
C$ 169
4/6mié.
1 stop
10h 59mSEA-YYZ
C$ 172
3/6mar.
directAlaska Airlines
4h 37mSEA-YYZ
C$ 179
31/5sáb.
directAlaska Airlines
4h 37mSEA-YYZ
C$ 192
3/6mar.
2 stopsAir Canada
12h 50mSEA-YYZ
C$ 199
3/6mar.
2 stopsAir Canada
9h 22mSEA-YYZ
C$ 202
16/5vie.
2 stopsUnited Airlines
21h 34mPDX-YYZ
C$ 219
9/7mié.
2 stopsUnited Airlines
11h 42mPDX-YYZ
C$ 228

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Last minute flights from Washington to Ontario

Last minute flight, train and bus deals

4/5dom.
multi-stopUnited Airlines
8h 55mPDX-YYZ
15/5jue.
multi-stopUnited Airlines
10h 51mYYZ-PDX
C$ 586
5/5lun.
multi-stopUnited Airlines
8h 06mPDX-YYZ
8/5jue.
multi-stopUnited Airlines
7h 33mYYZ-PDX
C$ 674
5/5lun.
multi-stopAmerican Airlines
11h 44mPDX-YYZ
9/5vie.
multi-stopAmerican Airlines
6h 54mYYZ-PDX
C$ 688
5/5lun.
multi-stopAir Canada
7h 50mPDX-YUL
7/5mié.
multi-stopAir Canada
10h 10mYUL-PDX
C$ 720
5/5lun.
multi-stopWestJet
13h 06mPDX-YYZ
12/5lun.
multi-stopWestJet
7h 52mYYZ-PDX
C$ 757
4/5dom.
multi-stopAir Canada
11h 25mPDX-YYZ
6/5mar.
multi-stopAir Canada
11h 25mYYZ-PDX
C$ 818
2/5vie.
multi-stopWestJet
8h 29mSEA-YYZ
6/5mar.
multi-stopWestJet
9h 50mYYZ-SEA
C$ 1,081
5/5lun.
multi-stopAmerican Airlines
8h 20mSEA-YYZ
13/5mar.
multi-stopAmerican Airlines
13h 58mYYZ-SEA
C$ 1,210
1/5jue.
directAlaska Airlines
4h 45mSEA-YYZ
9/5vie.
directAlaska Airlines
5h 14mYYZ-SEA
C$ 1,419
2/5vie.
directAlaska Airlines
4h 45mSEA-YYZ
6/5mar.
directAlaska Airlines
5h 14mYYZ-SEA
C$ 1,474

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Everything you need to know for your flight to Ontario

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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