$115 Find Cheap Flights from Ontario to Washington

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Low seasonJanuary
High seasonAugust
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 8% lower on average.

FAQs for booking flights from Ontario to Washington

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

    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 Ontario to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Washington 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 Ontario to Washington?

    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 Ontario to Washington 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 Ontario to Washington?

    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 Ontario to Washington 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 Washington?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Washington is Seattle/Tacoma Intl Airport (SEA), with an average flight price of $279.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Wednesday where round-trip tickets can be as cheap as $401. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $580 on average.

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

    The cheapest time of day to fly to Washington is generally at night, when round-trip flights cost $371 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $524.

  • What is the cheapest flight to Washington?

    The cheapest ticket to Washington from Ontario found in the last 72 hours was to Seattle, at $173 round-trip. The most popular route is Toronto Pearson Intl Airport (YYZ) to Seattle (SEA) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $173.

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

    The cheapest month for flights from Ontario to Washington is February, when tickets cost $269 (return) on average. On the other hand, the most expensive months are December and May, when the average cost of round-trip tickets is $450 and $448 respectively.

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

    To get a below average price on the flight from Ontario to Washington, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

  • How long is the flight to Washington?

    An average nonstop flight from Ontario to Washington takes 13h 39m, covering a distance of 2062 miles. The shortest route is Toronto Pearson Intl Airport (YYZ) to Seattle (SEA) with an average flight time of 5h 19m.

  • What are the most popular destinations in Washington?

    Based on KAYAK flight searches, the most popular destination is Seattle (82% of total searches to Washington). The next most popular destinations are Portland (16%) and Spokane (1%). Searches for flights to Bellingham (0%) and to Wenatchee (0%) are also popular.

Top 5 airlines serving from Ontario to Washington

Need help choosing which airline to fly with from Ontario to Washington? 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
7.1Entertainment
7.9Comfort
8.2Boarding
8.5Crew
7.1Food
Airline reviews

Booked a premium seats weeks ago and got an email the night before that id instead be seated in the cabin. Only reason I booked this overnight flight was for the better seating. All they are doing to compensate is giving a $29 coupon to use on another flight. I won’t be booking this airline again.

4.0 OkayAnonymous, Apr 2025EWR - SEA
Read more Alaska Airlines reviews

Booked a premium seats weeks ago and got an email the night before that id instead be seated in the cabin. Only reason I booked this overnight flight was for the better seating. All they are doing to compensate is giving a $29 coupon to use on another flight. I won’t be booking this airline again.

It was all great all around. Will travel with Alaska next trip.

There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.

Flight 351 SEA to BOI was terrible. We got to cruising altitude and I needed to use the restroom but the fasten seatbelt sign never came off. There was no turbulence and I'd felt the plane level off so I stood up to use the restroom about 15 minutes after we leveled off. The stewardess went over the intercom and said I needed to be seated because the captain hadn't turned off the fasten seatbelt sign....Which... Fair.... But not five minutes later she went and used the bathroom. Felt very unprofessional to leave a paying customer with a burning urethra for the entire flight and bark at them to sit down and still use the bathroom yourself. They never did turn off the seatbelt sign.

For longer trips, snacks are puny, boring and don’t have ANY nutritional value.

Upgraded to first class both times .The flight attendant Spicy Tim.was excellent and very amusing.

Close boarding too early we’re willing to not let people on flight that could not check in. What ever happened to customer service? Three of us had to fight to get on plane shameful

Check your emails that you sent me. 9 emails were sent telling me that my flight is Delayed. Each one with a different time 7:10, 7:55, 9:31, 9:09, 9:29, 9:44, 10:00, 9:49, and 10:10. That was how my experience went.

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

The flight was delayed due to a safety check. Why couldn't that have been done ahead of time? We got to Seattle with enough time to make our connecting flight but they kept changing the gate so we missed it. There were at least ten of us who missed the flight. The airline was aware. They could have waited. They didn't. Our new flight was not for seven hours and then was delayed another two hours. We got the last seats which don't recline. Super uncomfortable after a long day spent at the worst airport. Did they offer us a meal voucher or anything? On top of that Alaska Airlines didn't complete my ticket to the new flight. I wasn't sure I would get on this horrible flight, either. Oh, and it's ten o'clock at night....no food. Is this how Alaska Airlines treats its customers? I'll never fly with this airline again.

Fine except the person next to me took up her seat had raised the arm divide so she spilled into my seat. because of her size. Fortunately no one was in the seat on my right so I could use part of it.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Delta is a cut above the others in customer service.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

So far so good but food and entertainment are not available for this flight

leg space better than expected. two washrooms for one plane isn't enough.

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

The seats on this flight were almost roomy enough to be the basic amount needed for human existence.

Internet on both flights was sketchy. Thus in flight entertainment was non- existent on MN - Balrimote leg.

We never had an experience they canceled the flight and they did not offer us an alternative flight. I had to book one on my own expense. They offered us food voucher and we could not use them at the airport it kept saying not attached to an existing flight. The people at the counter were rude and cold and they did not care about our situation

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Found the seats very crowded—too close together ! And waited a long time for our luggage All staff at both ends were excellent!!!

Flight cancelled and Kayak switched our return flight to a red eye. Ridiculous.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

Easy self checkin and baggage drop. No in seat entertainment, but wifi and app worked well

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Boarding was challenging as we had to use the stairs from the tarmac. Stairs are okay but a roller bag makes it challenging.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

Book cheap flights from Ontario to Washington

Recent round-trip flight deals

7/10Thu
1 stopWestJet
9h 52mYHM-PDX
7/17Thu
1 stopWestJet
7h 56mPDX-YHM
$190
7/10Thu
1 stopWestJet
9h 52mYHM-PDX
7/14Mon
1 stopWestJet
7h 56mPDX-YHM
$192
5/28Wed
1 stopDelta
9h 09mYYZ-SEA
6/4Wed
1 stopDelta
8h 15mSEA-YYZ
$274
6/4Wed
1 stopDelta
13h 33mYYZ-SEA
6/8Sun
1 stopDelta
8h 20mSEA-YYZ
$278
5/21Wed
nonstopAlaska Airlines
5h 19mYYZ-SEA
6/3Tue
nonstopAlaska Airlines
4h 37mSEA-YYZ
$284
6/5Thu
2 stopsAir Canada
10h 58mYYZ-SEA
6/11Wed
2 stopsAir Canada
11h 55mSEA-YYZ
$286
6/5Thu
1 stopAir Canada
10h 37mYYZ-SEA
6/11Wed
2 stopsAir Canada
11h 55mSEA-YYZ
$291
5/21Wed
nonstopAlaska Airlines
5h 19mYYZ-SEA
6/1Sun
nonstopAlaska Airlines
4h 37mSEA-YYZ
$293
5/12Mon
2 stopsUnited Airlines
12h 06mYYZ-PDX
5/12Mon
1 stopUnited Airlines
9h 16mPDX-YYZ
$296
5/13Tue
1 stopUnited Airlines
7h 44mYYZ-PDX
5/17Sat
1 stopUnited Airlines
14h 48mPDX-YYZ
$298

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Recent one-way flight deals

6/1Sun
1 stopWestJet
9h 58mYKF-SEA
$115
6/1Sun
1 stopWestJet
9h 58mYKF-SEA
$116
5/27Tue
1 stopDelta
9h 09mYYZ-SEA
$165
5/27Tue
1 stopAir Canada
10h 12mYTZ-SEA
$166
6/4Wed
nonstopAlaska Airlines
5h 19mYYZ-SEA
$167
6/4Wed
1 stopAir Canada
10h 12mYTZ-SEA
$171
6/5Thu
1 stopDelta
7h 35mYYZ-SEA
$176
5/14Wed
2 stopsUnited Airlines
13h 08mYYZ-PDX
$179
7/2Wed
1 stopUnited Airlines
16h 22mYYZ-PDX
$186
6/24Tue
nonstopAlaska Airlines
5h 24mYYZ-SEA
$273

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Last minute flights from Ontario to Washington

Last minute flight, train and bus deals

5/3Sat
multi-stopUnited Airlines
8h 31mYYZ-PDX
5/7Wed
multi-stopUnited Airlines
11h 00mPDX-YYZ
$390
5/5Mon
multi-stopUnited Airlines
8h 42mYUL-PDX
5/5Mon
multi-stopUnited Airlines
12h 06mPDX-YUL
$425
5/5Mon
multi-stopDelta
8h 19mYUL-PDX
5/7Wed
multi-stopDelta
14h 44mPDX-YUL
$426
5/5Mon
multi-stopAir Canada
9h 05mYUL-PDX
5/7Wed
multi-stopAir Canada
9h 11mPDX-YUL
$431
5/5Mon
multi-stopWestJet
15h 20mYYZ-SEA
5/24Sat
multi-stopWestJet
7h 36mSEA-YYZ
$507
5/5Mon
multi-stopDelta
9h 54mYUL-PDX
5/6Tue
multi-stopDelta
14h 00mPDX-YUL
$514
5/5Mon
multi-stopWestJet
12h 32mYYZ-SEA
5/24Sat
multi-stopWestJet
13h 01mSEA-YYZ
$524
5/5Mon
nonstopAlaska Airlines
5h 14mYYZ-SEA
5/27Tue
nonstopAlaska Airlines
4h 37mSEA-YYZ
$558
5/5Mon
multi-stopAir Canada
9h 13mYYZ-SEA
5/21Wed
multi-stopAir Canada
11h 55mSEA-YYZ
$568
5/5Mon
nonstopAlaska Airlines
5h 14mYYZ-SEA
5/26Mon
nonstopAlaska Airlines
4h 37mSEA-YYZ
$592

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Everything you need to know for your flight to Washington

Cabin class types available on flights to Ontario

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

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