C$ 127 Find Cheap Flights from Washington to Ontario

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Low seasonJanuary
High seasonAugust
Cheapest flightC$ 127
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (9% more expensive on average)
Flight from Seattle to Toronto Pearson Airport

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$ 372.

  • 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$ 683. On the other hand, the most expensive day to fly is Tuesday, when round-trip prices are C$ 1,265 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 116% 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$ 769.

  • 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$ 206 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$ 206.

  • 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$ 462 (return) on average. On the other hand, the most expensive months are June and April, when the average cost of round-trip tickets is C$ 993 and C$ 863 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 38m, 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 39m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Toronto (98% of total searches to Ontario). The next most popular destinations are Ottawa (2%) and Sault Ste Marie (0%). Searches for flights to London (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 10000 reviews
7.1Entertainment
8.1Boarding
7.8Comfort
7.1Food
8.5Crew
Airline reviews

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

10.0 ExcellentHelen, Jun 2025SEA - MCI
Read more Alaska Airlines reviews

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

Very pleasant and the flight felt like it went by quick

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

It is very bad they do not give you money back

They lost our bag and it took them days to find it. Terrible communication and lots of lies about where it was. Their system hasn’t merged with Hawaiian yet they route people on shared flights with Hawaiian, creating an administrative nightmare.

Flight was about 30 minutes delayed. All staff were friendly and professional while keeping us updated.

Major flight delays, it was a 1.5-hour delay. The gate kept changing about 3 times in Seattle. very hectic and chaotic.

Booked a first class ticket and was not even offered a bottle of water…or a cracker…absolutely zero in flight service on a 1 hour flight

More leg room in back seats. Can you require people to smell good on planes? ha ha Staff was great! Plane was comfortable. I enjoyed the movies and TV. Smooth take off and landing.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Delay and keep changing gates. I have to run around from B to C then to E.

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.

We didn’t make the flight due to Delta’s check in line moving too slow.

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic! No entertainment possibilities. Not even a plug-in for phone or IPad if you wanted to watch a downloaded movie. Back to flying Air Canada!

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic!

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

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

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

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

the fact air Canada changed my flight from 850 PM to 815 AM with zero regard to the plans i made that last day, the cost i lost out on as things were non refundable amd shortening my first vacation in 7 years sickened me. when we purchase a service thats whats we expect. when we want to change the service we have to pay for that option but you do whatever you want . i called accessibility dept as i have a cpap and an implanted loop recorder first person said no problem just let security know you cant go thru scanners. then i got an email saying i had to fill out a fit to fly form . which again there was NO need to have that none. But that cost me money and time to have a doctor fill it out. then when i went to check in online i was declined i had to see a person at the airport instead. i couldnt get my boarding pass like everyone elseso here I was contacting air canada so I would have a easy travel experience and it ended up being a nightmare with more work for me, more cost and time. the flight itself was great the nightmare around it i will never subject myself to again. i tried to stick with supporting Canada but Air Canada was not worth supporting. very disappointed especially with a dept that is supposed to help disabled people not make an already challenging event not worth going thru at all.

Most courteous, helpful employees and all flights were on time.

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

Book cheap flights from Washington to Ontario

Recent round-trip flight deals

22/8Fri
1 stopWestJet
7h 56mSEA-YKF
31/8Sun
1 stopWestJet
9h 58mYKF-SEA
C$ 298
17/7Thu
1 stopWestJet
7h 56mSEA-YKF
22/7Tue
1 stopWestJet
9h 58mYKF-SEA
C$ 299
27/11Thu
1 stopUnited Airlines
11h 11mSEA-YYZ
28/11Fri
1 stopUnited Airlines
10h 04mYYZ-SEA
C$ 379
4/7Fri
1 stopAir Canada
9h 26mSEA-YTZ
10/7Thu
2 stopsAir Canada
20h 46mYTZ-SEA
C$ 384
15/7Tue
directAlaska Airlines
4h 43mSEA-YYZ
16/7Wed
directAlaska Airlines
5h 24mYYZ-SEA
C$ 391
4/8Mon
2 stops
12h 45mPDX-YUL
13/8Wed
1 stop
9h 05mYUL-PDX
C$ 391
26/9Fri
1 stopAir Canada
9h 34mSEA-YTZ
1/10Wed
1 stopAir Canada
10h 06mYTZ-SEA
C$ 396
4/9Thu
1 stop
7h 37mPDX-YYZ
9/9Tue
1 stop
10h 14mYYZ-PDX
C$ 399
7/11Fri
1 stopUnited Airlines
8h 34mSEA-YYZ
14/11Fri
1 stopUnited Airlines
10h 04mYYZ-SEA
C$ 412
16/7Wed
directAlaska Airlines
4h 43mSEA-YYZ
18/7Fri
directAlaska Airlines
5h 24mYYZ-SEA
C$ 457

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Recent one-way flight deals

25/7Fri
2 stopsWestJet
12h 53mSEA-YYZ
C$ 127
23/7Wed
2 stopsWestJet
12h 53mSEA-YYZ
C$ 133
12/7Sat
2 stopsAir Canada
9h 00mSEA-YYZ
C$ 135
12/7Sat
1 stopAir Canada
8h 19mSEA-YYZ
C$ 139
17/7Thu
1 stopAmerican Airlines
14h 25mPDX-YYZ
C$ 165
13/7Sun
1 stopAmerican Airlines
15h 08mPDX-YYZ
C$ 174
13/7Sun
1 stopUnited Airlines
19h 38mSEA-YYZ
C$ 175
4/8Mon
1 stopUnited Airlines
11h 53mPDX-YOW
C$ 178
2/9Tue
directAlaska Airlines
4h 44mSEA-YYZ
C$ 217
23/6Mon
1 stopAlaska Airlines
10h 43mPDX-YYZ
C$ 264

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Last minute flights from Washington to Ontario

Last minute flight, train and bus deals

17/6Tue
multi-stopWestJet
10h 58mSEA-YYZ
13/7Sun
multi-stopWestJet
8h 46mYYZ-SEA
C$ 439
17/6Tue
multi-stopWestJet
20h 47mSEA-YYZ
13/7Sun
multi-stopWestJet
8h 46mYYZ-SEA
C$ 462
13/6Fri
multi-stopDelta
11h 43mPDX-YYZ
20/6Fri
multi-stopDelta
8h 49mYYZ-PDX
C$ 496
16/6Mon
multi-stopAir Canada
9h 00mSEA-YYZ
24/6Tue
multi-stopAir Canada
10h 41mYYZ-SEA
C$ 515
17/6Tue
multi-stopUnited Airlines
18h 15mSEA-YYZ
13/7Sun
multi-stopUnited Airlines
15h 11mYYZ-SEA
C$ 528
17/6Tue
multi-stopAir Canada
7h 14mSEA-YYZ
18/6Wed
multi-stopAir Canada
8h 41mYYZ-SEA
C$ 611
13/6Fri
multi-stopDelta
6h 38mSEA-YYZ
15/6Sun
multi-stopDelta
9h 13mYYZ-SEA
C$ 630
13/6Fri
multi-stopUnited Airlines
9h 07mSEA-YYZ
15/6Sun
multi-stopUnited Airlines
9h 09mYYZ-SEA
C$ 632
16/6Mon
multi-stopAlaska Airlines
9h 10mSEA-YYZ
23/6Mon
directAlaska Airlines
5h 24mYYZ-SEA
C$ 897
16/6Mon
multi-stopAlaska Airlines
9h 10mSEA-YYZ
17/6Tue
directAlaska Airlines
5h 24mYYZ-SEA
C$ 945

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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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