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C$ 132 Find cheap flights from Seattle to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Ontario departing on 13/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags

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Best Ontario Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Toronto
Toronto2 stopsC$ 355
Ottawa
Ottawa1 stopC$ 431
London
London2 stopsC$ 689

Good to know

Low season

February

High season

August

Cheapest flight

C$ 132
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Seattle to Toronto Pearson Airport

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Seattle 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 Seattle to Ontario.

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

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

  • What is the Hacker Fare option on flights from Seattle 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 to Ontario with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle 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 to Ontario from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Morning departure is around 12% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Seattle to Ontario

Need help choosing which airline to fly with from Seattle 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.
8.4
EVA AirOverall score based on 1382 reviews
8.6Crew
8.0Entertainment
8.5Boarding
8.0Food
8.3Comfort
Airline reviews

On time service. Seat comfort and the crew service very good .

10.0 ExcellentAnonymous, Jul 2024ORD - TPE
Read more EVA Air reviews

On time service. Seat comfort and the crew service very good .

Only one Hindi movie from LAvto Taipei and same movie from Taipei to Singapore Really horrible and we call it entertainment???

I like Eva Air. I’ve been flying it for several years.. I did notice small changes for the worse by the staff. They’re still way above major carriers based in the USA.

Food was ok. Could have been better. Entertainment was limited, especially for kids.

The crew was very helpful. Food was prepared with great care and tasted wonderful. Movie selection was a bit limited. The bedding on the seat is a little too thin for sleeping.

As a senior traveller it’s difficult to be seated all the way at the back

Their announcement was not quite clear in Chinese. The rest is pretty good.

The hygiene of the bathrooms were terrible. Urine smells leaked out into the cabin and the seats were really tight, even for a petite woman like myself. Flight attendants did not go through the cabin enough to offer refreshments.

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

The experience was poor in comparison to the flight to Manado from Singapore via Scoot. Gate against could only check in stroller to Singapore (by clearing immigration) or to Brisbane. Who is able to carry their baby for 7 hour transit without having to enter Singapore?

I was traveling with my 3 minor children, one leg I was seated two aisles behind them. On the longest leg I would have preferred sitting across the aisle from them, not behind. My youngest is 4yos. I understand airplane seating configurations are not the airlines problem but seating the one adult with a reservation apart from the minors was very difficult.

Awesome! Was impressed with the hospitality and the thoughtful services. The cabin attendants were superb.

Crews are not allowed to perform any service whenever the captain deems there’s a chance of turbulence. Even if it is perfectly smooth air.

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

Crews were great but food not much selection just all tailored for Asian passengers.

Too many luggages for 1 passenger (4 bags) will make all the overhead luggage bins a challenge to fit them all. Some have oversized hand carry as in like back packer size bags shouldn’t be allowed as handcarry.

I had a great experience with Singapore airlines as always. The partner airline, Scoot was fine except my bag was misplaced during the shuffle. Ultimately, my baggage arrived intact. Attempting to inquire about my baggage was impossible.

The Premium economy class is not the same as some other airlines because there are no economy seats on these planes. Basically you’re getting an economy seat that’s a little wider. The seats are not that much more comfortable. The service and food experience is similar to economy class on other Asian airlines. There aren’t enough toilets for the entire plane therefore we are forced to share the business class toilets that are closed off with curtains.

Great to have actual hot tastey meal on a flight. Well done

The Economy Plus rows weren’t as roomy as expected, and the meal service left a lot to be desired for.

Flight delayed. They made no attempt to get our luggage to our connecting flight so I am without necessities after they begged me to check in my bag. Still dont have it.

The flight was very good. Only complaint was that the usb charging connection did not work for either me or the seat next to me so we both had to use our own portable battery to charge our phones. I also liked the fact that I could purchase Wi-Fi for an hour instead of for the entire flight.

Your seats in the last 5 rows are terrible. My knees were jammed into the seat in front of me and the lady sitting there decided to recline it. Jammed my knees bad. I don’t know if I’ll fly United again.

The flight from Cleveland to Newark was great. The connecting flight wasn’t so good.

This was a short flight with no food. The attendants were great but the comfort was poor: just to cramped. The flight from Denver to Frankfort was excellent! Seating was roomier, food was good, service was good. This was a great experience.

They opened my checked bag and even though my lock was tsa approved, they loose my lock and left my bag just like that. Incompetent people, very upset about it. I’ll try to avoid traveling with united

We fly to Ecuador frequently. Checking in is usually a hassle because most United agents take some time before they can verify that my passport doesn't require a visa to Ecuador. This time the process was even longer due to the cyber attack. But she was really nice to us. So glad we brought plenty of snacks to supplement the 3 flights from SEA to GYE.

Onboarding process was great and efficient. Plane was very new and entertainment choices were great. The only complain is no meal despite it was a flight that is longer than 6 hours.

We had selected seats in the app that were a 2x2 format in the middle of the plane. Our seats when we got on the plane had been moved to the back rows in a 3x1 format. What’s the point of paying up for tickets that allow seat selection if the airline will just change them?

There were several different delays but we ended up being delayed a total of 40 mins or so. It was annoying we had a gate change which made it take longer to leave DFW, and we had to check our carry on. Ugh

The foot ottoman cushion was missing on my business class seat.. the hydraulics is on its last leg & seat cushions do not have support or paddling. Heavily dented by butts

The flight was delayed till next day ! They kept delaying every 30 minutes then after 3 hours they delayed it till next day. We kept waiting in line standing more than an hour to get the hotel and meal vouchers. There was no communication at all. Everything was bad

Flight was on time, no drinks served on the two short flights. Comfortable seats.

This flight was fine but had no time to breathe as the connection was late from Sea to ORD.. Super stressful. If we checked bags, the trip would have been very distressed.

The one gate agent was very abrupt and rude. Not a good look for American for the day

It was late, then the bathroom was inoperable plus it was very hot as well. Plane was very old

Other than Charlotte airport being crowded and a mush of people at the gate and even through the priority lane, the flight was great.

This time there was nothing to be better, really! Boarding on time, taking off on time and arriving earlier. The only complain is about way too long line at pre-check security point at DFW. But this is the airport’s problem, not American Airline.

3 hours late. Second consecutive time this month that a flight from DFW was delayed 3+ hours.

Take off and landing and also the crew were excellent, just we could not received one of our suitcases at Ottawa at the same time we got there, but the associate at Ottawa airport were very nice and helpful so we could receive it on 16th of September.

Service was great. Flight was delayed an hour which made our connection very tight and stressful. But we fortunately made it.

They served us 1.5 pieces of chicken nuggets with coleslaw..felt like a toddlers meal in business class. Why bother?

Flight was delayed due to mechanical issues with in-house entertainment. Strike one for the delay, strike two for no entertainment. Once we boarded we still had to wait while they tried to fix the entertainment system. Strike three was an issue with a passenger falling in the lavatory so no breakfast was served for economy seats. Not blaming the passenger but did the entire crew have to attend to one person? She walked off the plane by herself so she didn’t seem that bad off. Pretty much everything that could go wrong did but at least we got our luggage!

Seats uncomfortable There was an incident with plane Engine Pilot was reassuring. Good pilot We landed late because of this Fire engines on landing were just Protocol

Crew was rushed to get food out and left trash for a long time on our tables.

Very pleasant crew! Good entertainment options. Water wasn’t working in the bathrooms, but they were able to fix it. Just had to stand with sticky soap hands for 20min….

I think it was a very good, left in time and reached in time. Crew was good

The Montreal to Barcelona flight was cancelled half hour before boarding. We had to struggle for hours to find an alternative route through a very long route with 6 hours of transit time in Munich. It wasted almost one full day of our long awaited vacation. We are extremely disappointed.

The entire aircraft was outfitted with comfortable business-class seats that featured luxurious reclining capabilities and built-in footrests for added relaxation during the flight.

Book cheap flights from Seattle to Ontario

Recent round-trip flight deals

27/11Wed
2 stopsWestJet
11h 45mSEA-YYZ
4/12Wed
1 stopWestJet
9h 26mYYZ-SEA
C$ 355
6/12Fri
directAlaska Airlines
4h 33mSEA-YYZ
8/12Sun
directAlaska Airlines
5h 19mYYZ-SEA
C$ 363
24/10Thu
2 stops
22h 40mSEA-YYZ
28/10Mon
1 stop
19h 33mYYZ-SEA
C$ 374
6/12Fri
direct
4h 33mSEA-YYZ
8/12Sun
1 stop
9h 43mYYZ-SEA
C$ 376
14/10Mon
directUnited Airlines
4h 33mSEA-YYZ
21/10Mon
directUnited Airlines
5h 21mYYZ-SEA
C$ 416
14/10Mon
directAir Canada
4h 33mSEA-YYZ
21/10Mon
1 stopAir Canada
8h 15mYYZ-SEA
C$ 422
8/10Tue
1 stopAir Canada
9h 09mSEA-YTZ
12/10Sat
1 stopAir Canada
8h 55mYTZ-SEA
C$ 422
28/12Sat
directUnited Airlines
4h 45mSEA-YYZ
4/1Sat
1 stopUnited Airlines
16h 39mYYZ-SEA
C$ 436
11/10Fri
1 stopAmerican Airlines
19h 24mSEA-YYZ
16/10Wed
1 stopAmerican Airlines
19h 23mYYZ-SEA
C$ 448
5/12Thu
1 stopAmerican Airlines
7h 41mSEA-YYZ
16/12Mon
1 stopAmerican Airlines
17h 46mYYZ-SEA
C$ 484

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Recent one-way flight deals

13/11Wed
1 stop
9h 09mSEA-YYZ
C$ 132
16/10Wed
2 stops
32h 11mSEA-YYZ
C$ 141
1/2Sat
directAlaska Airlines
4h 38mSEA-YYZ
C$ 148
16/10Wed
directAlaska Airlines
4h 30mSEA-YYZ
C$ 174
12/10Sat
1 stopAir Canada
9h 09mSEA-YTZ
C$ 181
11/10Fri
1 stopUnited Airlines
17h 11mSEA-YYZ
C$ 187
11/10Fri
1 stopAir Canada
9h 09mSEA-YTZ
C$ 187
17/10Thu
2 stopsUnited Airlines
20h 55mSEA-YYZ
C$ 194
9/11Sat
1 stopAmerican Airlines
14h 00mSEA-YYZ
C$ 209
27/10Sun
1 stopAmerican Airlines
11h 01mSEA-YYZ
C$ 327

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Last minute flights from Seattle to Ontario

Last minute flight, train and bus deals

18/9Wed
multi-stopAir Canada
7h 59mSEA-YOW
22/9Sun
multi-stopAir Canada
8h 31mYOW-SEA
C$ 562
20/9Fri
multi-stopAir Canada
8h 48mSEA-YOW
23/9Mon
multi-stopAir Canada
8h 31mYOW-SEA
C$ 571
18/9Wed
multi-stopUnited Airlines
17h 25mSEA-YOW
22/9Sun
multi-stopUnited Airlines
20h 57mYOW-SEA
C$ 602
17/9Tue
multi-stopWestJet
14h 31mSEA-YYZ
1/10Tue
multi-stopWestJet
9h 56mYYZ-SEA
C$ 619
19/9Thu
multi-stop
10h 52mSEA-YYZ
26/9Thu
multi-stop
20h 21mYYZ-SEA
C$ 634
20/9Fri
multi-stop
10h 51mSEA-YOW
23/9Mon
multi-stop
29h 35mYOW-SEA
C$ 671
17/9Tue
multi-stopWestJet
14h 31mSEA-YYZ
1/10Tue
multi-stopWestJet
15h 26mYYZ-SEA
C$ 687
18/9Wed
multi-stopUnited Airlines
7h 34mSEA-YOW
22/9Sun
multi-stopUnited Airlines
20h 57mYOW-SEA
C$ 823
21/9Sat
multi-stopAmerican Airlines
8h 23mSEA-YUL
1/10Tue
multi-stopAmerican Airlines
15h 26mYUL-SEA
C$ 1,049
21/9Sat
multi-stopAmerican Airlines
8h 23mSEA-YUL
2/10Wed
multi-stopAmerican Airlines
10h 15mYUL-SEA
C$ 1,077

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Everything you need to know for your flight from Seattle to Ontario

Information on your arrival and departure airports