C$ 139 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Ontario departing on 15/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Ontario, as well as popular online travel agencies
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Cheap Flights from Washington, D.C. to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Ontario

Sat, 30 May - Sat, 6 Jun
Porter Airlines Logo
11:30 a.m. - 1:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
9:15 a.m. - 10:46 a.m.
YTZ
-
IAD
1h 31mdirect
C$ 261Porter Airlines
Sun, 24 May - Wed, 27 May
Air Canada Logo
6:00 a.m. - 11:47 a.m.
DCA
-
YTZ
5h 47m
1 stop
Air Canada Logo
7:40 a.m. - 12:01 p.m.
YTZ
-
DCA
4h 21m
1 stop
C$ 261Air Canada
Sat, 6 Jun - Fri, 12 Jun
Porter Airlines Logo
11:30 a.m. - 1:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
1:50 p.m. - 3:21 p.m.
YTZ
-
IAD
1h 31mdirect
C$ 263Porter Airlines
Sat, 30 May - Mon, 1 Jun
Air Canada Logo
9:45 a.m. - 2:22 p.m.
IAD
-
YTZ
4h 37m
1 stop
Air Canada Logo
2:55 p.m. - 4:12 p.m.
YTZ
-
IAD
1h 17mdirect
C$ 264Air Canada
Sat, 30 May - Mon, 1 Jun
Porter Airlines Logo
11:30 a.m. - 1:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
9:15 a.m. - 10:46 a.m.
YTZ
-
IAD
1h 31mdirect
C$ 265Porter Airlines
Sat, 30 May - Mon, 1 Jun
Porter Airlines Logo
11:30 a.m. - 1:00 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
9:15 a.m. - 10:46 a.m.
YTZ
-
IAD
1h 31mdirect
C$ 267Porter Airlines
Thu, 7 May - Sun, 10 May
Air Canada Logo
6:00 a.m. - 11:47 a.m.
DCA
-
YTZ
5h 47m
1 stop
Air Canada Logo
7:40 a.m. - 12:01 p.m.
YTZ
-
DCA
4h 21m
1 stop
C$ 267Air Canada
Thu, 4 Jun - Sun, 7 Jun
Air Canada Logo
5:15 p.m. - 6:42 p.m.
IAD
-
YTZ
1h 27mdirect
Air Canada Logo
2:55 p.m. - 4:12 p.m.
YTZ
-
IAD
1h 17mdirect
C$ 268Air Canada
Mon, 25 May - Sat, 30 May
Porter Airlines Logo
4:05 p.m. - 5:35 p.m.
IAD
-
YTZ
1h 30mdirect
Porter Airlines Logo
9:15 a.m. - 10:46 a.m.
YTZ
-
IAD
1h 31mdirect
C$ 269Porter Airlines
Sun, 24 May - Wed, 27 May
United Airlines Logo
10:14 p.m. - 11:54 p.m.
IAD
-
YYZ
1h 40mdirect
United Airlines Logo
2:30 p.m. - 4:13 p.m.
YYZ
-
IAD
1h 43mdirect
C$ 336United Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Ontario flights

Get data-powered insights and trends into flights from Washington, D.C. to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Region of Ontario departing in May.

What is the cheapest Washington, D.C. to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from Washington, D.C. found in the last 72 hours was to Toronto, at C$ 133 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Toronto Island Airport (YTZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 302.

What is the cheapest time of day to fly to Ontario?

The average price for all round-trip flights from Washington, D.C. to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally in the evening, when round-trip flights cost C$ 365 on average. Morning departures are around 6% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally at night, which is peak travel time and where the average cost of a ticket is C$ 503.

Can I save money by flying with a layover from Washington, D.C. to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 405 on average.

What is the cheapest month to fly from Washington, D.C. to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Ontario is June, when tickets cost C$ 327 (return) on average. On the other hand, the most expensive months are November and August, when the average cost of round-trip tickets is C$ 446 and C$ 431 respectively.

What’s the cheapest day of the week to fly from Washington, D.C. to Ontario?

The average price of all round-trip flights from Washington, D.C. to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from Washington, D.C. to Ontario, you should consider leaving on a Sunday and avoid Saturdays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Fridays and the most expensive ones on Sundays.

How far in advance should I book a flight from Washington, D.C. to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Washington, D.C. to Ontario, you should book around 4 weeks before departure, which saves you about 54% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flightC$ 139
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Reagan Washington National Airport to Toronto

Flights from Washington, D.C. to Ontario: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Washington, D.C. to Ontario 
SamFlew with Air Canada
IAD
-
YYZ
Jan 2025
Do not rush to know the gate. almost anytime I have a trip to Toronto the gate changes and I walk a long distance to the new gate. for me this time around 30 minutes.
Verified travelerFlew with Air Canada
IAD
-
YYZ
Apr 2024
Grab the first class seat, it is worth the extra money for the comfort and nice meal for such a quick flight.

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. 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, D.C. 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, D.C. 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, D.C. 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, D.C. to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Washington, D.C. to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. 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
Porter AirlinesOverall score based on 435 reviews
8.6Crew
8.0Comfort
7.6Food
7.0Entertainment
8.2Boarding
Airline reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

6.0 GoodHarsh, Apr 2026
JFK - YYZ
Read more Porter Airlines reviews

A few improvements: 1. No signages at the airport that the porter airline was a codeshare and i could check-in at American counter. 2. Crew at the gate said they couldn't change my reward to Alaska - despite that being done previously 3. Despite there being many open seats, i was assigned a seat at the very back near lavatory, last row. Fortunately, the pilot wanted more people moved up so the flight attendants moved me up. It seemed very odd to have been stuck in last row with very few people nearby..

I didn’t receive any help when they messed up and wasn’t honest and the supervisor did absolutely nothing to help me so I had to buy another ticket at $537

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

Even tho the flight was a bit delayed the team was apologetic. Everyone was friendly and efficient.

The flight was a little delayed but check in was easy and boarding was quick. Luggage was quickly available and everything worked great.

The Flight took off 2hrs late because there was no pilot showing up when the flight was ready to board.. Though the cabin crew was present and had prepared the plane, the FO turned around after 15 min and went away. A crew to fly the plane finally arrived over an hour later and we were able to board 1h30 min later than planned time... until everything was loaded, we left 2h late from the gate. This was a small plane, so don't expect any Entertainment... Wi-Fi access on board would work, but took an awful amount of time to figure out and get it work (I'm an IT person). Flying as VIPorter customer, I was expecting at least some warm meal, but everything served was just cold.. except the coffee maybe. Even in so-called VIPorter seats, space is cramped and trays are so tiny, you can barely setup your food. Flight caught up during the coast-to-coast crossing and was able to recoup about 45 min from the delay.. still arrived very late in Vancouver and had to wait a long time to get our registered bags. Let's see how the return flight will be in a few days..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Due to a known technical error that Porter has not fixed in over a year, I was unable to check in the children on my reservation online and had to do it at the airport. Upon check in, there were no seats together, which was an issue as we had young children. The gate agent did manage to seat us together by moving other passengers, which was appreciated, but the other passengers were never informed, leading to confusion and delay upon boarding. The flight was over an hour late; no explanation or apology was ever issued. The bags on Porter take a long time to arrive--over half an hour at Hamilton on my inbound flight, and not much better on my return to Edmonton.

Much roomer than air Canada! Great flight for the price. No complaints

On my e-boarding pass it shows free wifi, yet the plane I was on didn’t have wifi. Please remove false advertising from your website and boarding passes

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

Good boarding but extremely cold temperature in both flights (60 F!).

Very rude gate attendants in San Francisco who didn’t let me bring my little carry on (smaller than usual size) and after boarding I realized that there still were a lot of overhead compartment space (like a full section available in some spots). That made me lose 30 minutes at my destination at 1am and it could have broken something fragile that I had in it

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Everything you need to know for your flight from Washington, D.C. to Ontario

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.