$146 Find Cheap Flights from Ontario to Washington - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Washington departing on 7/27. 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
1 adult, Economy, 0 bags

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Good to know

Low seasonJanuary
Cheapest flight$146
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Toronto Pearson Airport to Portland

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 airlines fly most frequently to Washington?

    Ontario and Washington are connected by different airlines. The airlines that fly that route the most regularly are Alaska Airlines (8 flights per week), Air Canada (7 flights per week), and United Airlines (7 flights per week).

  • How many airports are there in Washington?

    There are 13 airports in Washington. The busiest airport is Seattle/Tacoma Airport (SEA), with 87% of all flights arriving there.

  • 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 $400.

  • What is the cheapest day to fly to Washington?

    Based on KAYAK data, the cheapest day to fly to Washington is Thursday where round-trip tickets can be as cheap as $430. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $757 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 $450 on average. Morning departures are around 32% 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 $611.

  • What is the cheapest flight to Washington?

    The cheapest ticket to Washington from Ontario found in the last 5 days was to Seattle, at $517 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 5 days was $517.

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

    The cheapest month for flights from Ontario to Washington is March, when tickets cost $86 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $526 and $137 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 4 weeks before departure, which saves you about 57% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

  • How many cities have direct flights to Washington?

    From Ontario, there are direct flights to Washington from 1 city. This city is Toronto and there are 26 direct flights each week.

  • How many direct flights to Washington are there each day?

    There are around 4 direct flights from within Ontario to Washington every day. Most flights (69%) depart in the evening.

  • How many direct flights to Washington are there each week?

    Each week there are around 26 direct flights from within Ontario to Washington. The most common day for departures is Monday, with 15% of flights taking off on this day.

  • How long is the flight to Washington?

    An average nonstop flight from Ontario to Washington takes 12h 13m, 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.

  • How many long-haul flights are there to Washington each week?

    There are not any long-haul (6-12 hour flight duration) or short-haul (up to 3 hour flight duration) flights to Washington. Instead, there are 26 medium-haul flights (3-6 hour flight duration), with the most arriving from Toronto.

  • What are the most popular destinations in Washington?

    Based on KAYAK flight searches, the most popular destination is Seattle (83% of total searches to Washington). The next most popular destinations are Portland (15%) and Spokane (1%). Searches for flights to Bellingham (0%) and to Wenatchee (0%) are also popular.

Reviews of the 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.
7.9
Alaska AirlinesOverall score based on 12593 reviews
8.5Crew
7.0Entertainment
8.1Boarding
7.0Food
7.8Comfort
Airline reviews

The whole staff was amazing. Courteous and so helpful. Smiling all the time.

10.0 ExcellentAnonymous, Jun 2026
YVR - SEA
Read more Alaska Airlines reviews

The whole staff was amazing. Courteous and so helpful. Smiling all the time.

Excellent flights. On time. Good service. Better than expected food. Comfortable seats. Too much dependent on personal phones for information and entertainment.

Made up time on a late flight and made the connection

The flight was fantastic. All the crew staff were wonderful. Everyone was so friendly and they went out of their way to help make it such an enjoyable flight! I think on such a long flight there should have been some food given. Even cheese and crackers and maybe some cookies!

Upgrading from premium class to first class caused me to almost miss my seat on the flight. The system “un checked me in”. So I not only lost my first class seat, but my premium seat too so I alsmot didn’t have a seat on the plane. The app did not let me know as it was showing my seat assignment all the way up until boarding began. This exact same thing happened to another passenger. And to top it off, I now have to jump through hoops to get my refund. Awful experience with Alaska, I don’t intend to fly with AA again unless there are no other options.

Very satisfied with the trip, using Kayak and Alaska Airlines.

How can we get assigned an A seat when booking a flight ?

Good experience, first time flying Alaska Air. Slight delay boarding, but still arrived on time. Excellent leg room! Very friendly flight attendants.

Alaska Airlines was hit with a bad IT outage. I think its a one off and dont want to give a bad feedback to them because of that. In addition, to all the delays our particular flight had a health incident and had to stop midway. Again no negative feedback because of that. However the way they dealt with the delay was not genuine. First the communication was not consistent and always kept changing. I lost a day and $647, completely because of them. They promised a refund which i have complaints about. First it was never given to me. They aksed me to call them or text them and the wait time was 1.56 hour for calls and 3:50 hours for texts. Finally when they texted back, the support executive was rude and asked me to get my refund from Delta the other airline that i booked my ticket because Alaska cancelled their flight. When I asked why Delta would pay me for Alaska’s delay she just ended the chat. To get back on the chat I had to wait for 3.5 hours. I could not. Second they announced that even if they pay us, they would not refund us cash but were giving us a discount on future travel. I vowed never to go back to Alaska so, i do not want the discount refund. Overall, I am terribly unhappy with Alaska Airlines and never going back.

Terrible customer service, closed check in hours before flight left, provided incorrect information

Not really a “Delta” problem but worth mentioning: Boarding was a difficult process. TSA seemed understaffed and Pre-Check took longer than regular TSA. The supervisor was frazzled and yelled at travelers. Once through TSA, we had to put our carry-ons through another x-ray machine. Then queue up to board with both boarding pass and ID. Then, when we got to the stairs on the tarmac, we had to show our boarding pass again. Maybe this is just normal for Kona since the terminal is outdoors (but still a “secured” area).

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Much better than I expected. I had an economy ticket so I was really happy the flight was so comfy and the service so generous. Passengers were all polite too.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

After I checked in, I realized we had no seat assignment. It said they would be assigned at the gate. This was really frustrating because I usually use a lounge before flights, but I couldn't because I had to be at the gate to ensure we got our seat assignments. The gate agent arrived an hour before the flight left. I was the first one up to ask about seat assignments. She told us to wait for names to be called. Dozens of other passengers were paged, but we were not. Finally, I asked my husband to ask. He went up and was also told to wait. About 10 minutes later, they called for boarding. We still had not been told our seats. We went back to the desk and they were in a panic, saying we actually weren't on that flight. Then they made an announcement telling the stand by passengers to not board (in case we needed their seats). It was so stressful and unprofessional. Finally they gave us our seats. I have no idea what happened and why the two desk agents seemed to have conflicting ideas about our seats, whether we were on that flight etc.

Very dissatisfied with the fact that I had upgraded to first class for the second part of my trip only to find out that the lounge was still not available to me, as well as not having any food or drink service on the flight due to weather, so I lost out more than what I paid for.

It was very good. Our flight was delayed and we as a result missed our connecting flight but rescheduled to the next day. The Need Help staff was so great and offered us compensation that was beyond satisfactory.

Excellent. No issue and it was on time and arrived early, the best!

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Flight attendants had a little attitude. Food tastes no good.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The agents at the Kelowna YLW airport were really grumpy. Same with oversized baggage person. Staff on the plane were great.

Experience was good, the wifi hook up is somewhat tough

I will not be flying with westjet again. I was uncomfortable in my seat. The position made my back hurt so bad. My wife was able to fit the seatbelt around her with out an extension but was unable to put the tray table down or fit in the seat for that matter. Our bag was smashed and I spent two hours trying to fill out the application for a damaged bag before I gave up. The 80 photos I took would not work and nothing telling me the format to upload them as.. I made the mistake of unpacking the bag before taking photos so no claim for me. Next trip to Canada I will have to use air Canada.

Airplane is too small. Crew, especially the flight attendant who looked after our area, was not at all friendly and a touch authoratative. She may have been the most gruff flight attendant i've come across in 40 years of business travel

I selected "carry-on" for a round trip on Kayak, but my return flight on WestJet did not include a carry-on and they would not allow me to add one. My only option was to add a "checked bag" which I had to wait for on the luggage carousel after landing. Not a good experience.

Absolutely terrible, from the customer service to boarding the plane. On the phone, there was some mishaps with getting in my correct date and they did not help me retrieve a refund or any assistance. I’m gonna be reporting to all my followers and family around the region of Los Angeles to New York.

Nothing to like because my inbound flight was cancelled without notification by West Jet or third party, JustFly. I couldn’t take the inbound flight due to cancellation; therefore could not take the outbound flight back.

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

Terrible! Delayed three times, landed at some corner of airport, walked in bitter cold night, took a bus, bad experience

Got denied my flight was told on Google that Air Canada was supposed to book me a flight back home because I never was able to go to my destination. They did not help me whatsoever. I had to book a whole new flight for that reason I would write this is zero

After i biked my flights, i was informed my flight was rescheduled for later time

Air Canada had a lot of delays on our flight going back to Seattle. So much inconvenience for a long trip.

Great TV, easy boarding, wonderful ground crew and flight crew.

As is pretty much the norm with Air Canada now, we left late from the gate (45 minutes late). This is my 12th flight with AC in the last 12 months and 10 of those flights were either late or cancelled. AC essentially has a monopoly in Canada so they have carte blanche to charge exorbitant rates now and give poor service, with no repercussions.

They did not have any meal options left on the menu. Only snacks.

In Toronto (YYZ) on our inbound flight to SEA Tac: I don't understand why our passport had to be scanned again, at the boarding gate for the 3rd time after passing through both Canadian & U.S. inspection and customs. This was NOT done on our outbound flight to Montreal. Also, the gate personnel at YYZ did not use the microphone for boarding, instead they decided to speak quietly so no one could hear, leading to a pretty significant backup boarding the plane.

Airplane was clean and comfortable. Flight was on time leaving. It was a little late leaving on the return but in the end it was still on time lol. All felt smooth and easeful. Grateful for a non stop flight. The cabin stewards were all kind and service was rolled out smoothly. The Air Canada departure area in Seattle airport was a little short on water and food options so if you need snacks watch for them before you get into that gate area.

A very convenient, direct flight with no issues and comfy seats.

A guy two rows behind me started smoking mid flight. My eyes still burn 4 hours later. Food sucked. Sitting in the plane for 1.5 hours while they searched fir bags was insane.

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.