$83 Find Cheap Flights from Washington to Ontario

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Low seasonJanuary
High seasonJuly
Cheapest flight$83
Best time to beat the crowds but there is an average 23% increase in price.
Most popular time to fly with an average 1% increase in price.
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 travelers 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 $251.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Tuesday where round-trip tickets can be as cheap as $552. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $682 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 $283 on average. Morning departures are around 121% 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 $624.

  • 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 $305 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 $305.

  • 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 $254 (return) on average. On the other hand, the most expensive months are April and November, when the average cost of round-trip tickets is $631 and $612 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 nonstop flight from Washington to Ontario takes 10h 26m, covering a distance of 2055 miles. The shortest route is Seattle (SEA) to Toronto Pearson Intl Airport (YYZ) with an average flight time of 4h 40m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Toronto (94% of total searches to Ontario). The next most popular destinations are Ottawa (5%) and London (0%). Searches for flights to Thunder Bay (0%) and to Timmins (0%) are also popular.

Reviews of the top 5 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
7.8Comfort
8.1Boarding
7.1Food
8.5Crew
7.1Entertainment
Airline reviews

Our original fluffy was cancelled. Our substitute flight didn't fly. We lost out on our hotel and car rental. Had to fly out the next morning. Alaska didn't give us any meaningful information. The first flight was scheduled to leave at 4pm and the substitute flight at 9pm. We left the airport at midnight for a hotel. No weather. Beyond disappointed.

2.0 MediocreAnonymous, Jul 2025SEA - RNO
Read more Alaska Airlines reviews

Our original fluffy was cancelled. Our substitute flight didn't fly. We lost out on our hotel and car rental. Had to fly out the next morning. Alaska didn't give us any meaningful information. The first flight was scheduled to leave at 4pm and the substitute flight at 9pm. We left the airport at midnight for a hotel. No weather. Beyond disappointed.

Good leg room, no problem with overhead storage and the staff was super helpful.

There was a delay, then we were boarded, then deboarded, then waited another hour for a new flight, then boarded again and arrived 2 hours later than expected while traveling with 3 young children.

I don't like that this survey shows Good for everything. Everything was not Good. I didn't eat any of the food. I didnt' have any entertainment. You need to have a NA choice. My flight was satisfactory until I debarked the plane and fell on the Jetway. The jetway sections had a slight inclined edge, which I tripped on. I was near the plane's exit door, but neither of the flight attendants helped me get up. I was helped by two other passengers. Also, I explained to the counter staff about falling and no one seemed to understand what I was telling them. I said I fell on the ramp, which was not the correct term. The passenger who was sitting next to me on the plane did a better job of explaining to your staff where I fell and that I was in a lot of pain. I also wanted to report the incident and no one helped with that. I was then offered a wheelchair. The passenger who helped me stayed with me until the wheelchair arrived. I asked the wheelchair attendant if there was anyone I could report the incident to and he said there was no one. Really???? My daughter picked me up at the door. I tipped the attendant for his service from the Alaska counter to her car. Before leaving the property, my daughter called the airport to report the incident. We were advised to go to the to a hospital ER. A Cat Scan showed I broke the 6th rib on the right side. My daughter was sent paperwork to complete from the agent with whom she spoke before we left the airport.

Flight attendant was excellent, pleasant and attentive. Announcements were clear and pleasant.

seats good, foot space comfortable not good, waiting on tormack at Las Vegas

6 hour flight from Seattle to Dulles airport without any WiFi and movies, as well as now snacks is crazy. We were told no WiFi and entertainment 5 hours before departure.

Wifi would be nice. Unfortunately the particular airplane was not equipped with wifi.

I'm so glad that Alaska still keeps this little "puddle-jumper" route going between SEA>ALW; my daughter lives on Walla Walla, and it's so much quicker to be able to fly right in to Walla Walla than to have to fly into Tri-Cities and then make her drive 40 minutes each way. This flight is usually only 50%-75% full when I fly it, but that's because it doesn't get in to ALW until MIDNIGHT! But thanks for continuing to service the Walla Walla area, Alaska!

Seats very comfortable and legroom appreciated. All in all, it was a great experience.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

this crew didn't care much. bumping carts into seats more times than i care to remember

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

Everything was fine except the entertainment was not working for half of the flight.

Flight was actually on Air Canada. The flight itself was fine. Nothing special. Food was pretty pathetic except for cookies. They offered plenty of food and drinks but just wasn't very good. Even for airline food.

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

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.

Asked to cancel flight 6 days in advance of flight back to St. Louis, MO. Would not allow. No credit either.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

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

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

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Conflicting information provided about baggage allowance. One screen said I had a carry on and another said I didnt.

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

Book cheap flights from Washington to Ontario

Recent round-trip flight deals

10/30Thu
2 stopsWestJet
11h 48mSEA-YYZ
11/2Sun
1 stopWestJet
9h 35mYYZ-SEA
$197
10/16Thu
2 stopsWestJet
13h 01mSEA-YYZ
10/19Sun
1 stopWestJet
9h 59mYYZ-SEA
$217
9/4Thu
1 stopAir Canada
9h 19mPDX-YYZ
9/10Wed
2 stopsAir Canada
11h 21mYYZ-PDX
$221
9/4Thu
2 stopsAir Canada
11h 20mPDX-YYZ
9/10Wed
2 stopsAir Canada
11h 31mYYZ-PDX
$226
10/14Tue
nonstopAlaska Airlines
4h 42mSEA-YYZ
10/22Wed
nonstopAlaska Airlines
5h 23mYYZ-SEA
$229
11/9Sun
nonstopAlaska Airlines
4h 40mSEA-YYZ
11/13Thu
nonstopAlaska Airlines
5h 20mYYZ-SEA
$247
11/19Wed
1 stopUnited Airlines
11h 10mSEA-YYZ
11/20Thu
2 stopsUnited Airlines
11h 10mYYZ-SEA
$251
11/4Tue
1 stopUnited Airlines
11h 02mSEA-YYZ
11/7Fri
1 stopUnited Airlines
10h 04mYYZ-SEA
$255
8/15Fri
1 stopDelta
10h 16mGEG-YYZ
8/22Fri
1 stopDelta
11h 24mYYZ-GEG
$375
9/18Thu
1 stopDelta
10h 10mPDX-YUL
9/27Sat
2 stopsDelta
14h 08mYUL-PDX
$375

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Recent one-way flight deals

9/15Mon
1 stopWestJet
8h 47mSEA-YYZ
$83
10/4Sat
2 stopsAir Canada
10h 56mSEA-YYZ
$87
10/3Fri
2 stopsAir Canada
12h 46mSEA-YYZ
$90
11/4Tue
nonstopAlaska Airlines
4h 40mSEA-YYZ
$91
11/17Mon
nonstopAlaska Airlines
4h 40mSEA-YYZ
$99
9/3Wed
1 stopUnited Airlines
10h 03mSEA-YYZ
$101
9/12Fri
1 stopWestJet
7h 50mSEA-YHM
$102
11/4Tue
2 stopsUnited Airlines
13h 19mSEA-YYZ
$106
9/22Mon
1 stopDelta
10h 29mPDX-YUL
$153
9/22Mon
2 stopsDelta
13h 29mPDX-YUL
$159

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Last minute flights from Washington to Ontario

Last minute flight, train and bus deals

7/22Tue
multi-stopWestJet
7h 37mSEA-YYZ
7/29Tue
multi-stopWestJet
12h 38mYYZ-SEA
$258
7/22Tue
multi-stopWestJet
7h 19mSEA-YYZ
7/29Tue
multi-stopWestJet
11h 38mYYZ-SEA
$281
7/21Mon
multi-stopUnited Airlines
17h 28mPDX-YYZ
7/23Wed
multi-stopUnited Airlines
15h 42mYYZ-PDX
$343
7/21Mon
multi-stopAir Canada
8h 50mPDX-YYZ
8/16Sat
multi-stopAir Canada
10h 01mYYZ-PDX
$380
7/22Tue
multi-stopDelta
8h 19mPDX-YYZ
7/30Wed
multi-stopDelta
10h 19mYYZ-PDX
$389
7/18Fri
multi-stopUnited Airlines
8h 03mPDX-YYZ
7/26Sat
multi-stopUnited Airlines
14h 29mYYZ-PDX
$391
7/18Fri
multi-stopAir Canada
7h 55mPDX-YYZ
7/29Tue
multi-stopAir Canada
13h 40mYYZ-PDX
$394
7/22Tue
multi-stopDelta
8h 19mPDX-YYZ
7/30Wed
multi-stopDelta
10h 19mYYZ-PDX
$395
7/21Mon
nonstopAlaska Airlines
4h 43mSEA-YYZ
7/29Tue
multi-stopAlaska Airlines
11h 25mYYZ-SEA
$638
7/21Mon
nonstopAlaska Airlines
4h 43mSEA-YYZ
7/29Tue
nonstopAlaska Airlines
5h 24mYYZ-SEA
$690

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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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