C$ 101 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 6/10. 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

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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Best Ontario Flight Deals from Washington, D.C.

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa1 stopC$ 380
Ottawa
Ottawa1 stopC$ 380

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

Fri, 5 Sep - Sun, 7 Sep
Porter Airlines Logo
4:20 p.m. - 5:53 p.m.IAD-YTZ
1h 33mdirect
Porter Airlines Logo
8:45 a.m. - 10:16 a.m.YTZ-IAD
1h 31mdirect
C$ 286Porter Airlines
Find Deal
Fri, 19 Sep - Wed, 24 Sep
Porter Airlines Logo
11:35 a.m. - 1:08 p.m.IAD-YTZ
1h 33mdirect
Porter Airlines Logo
1:35 p.m. - 3:06 p.m.YTZ-IAD
1h 31mdirect
C$ 288Porter Airlines
Find Deal
Sat, 20 Sep - Mon, 22 Sep
Porter Airlines Logo
4:20 p.m. - 5:53 p.m.IAD-YTZ
1h 33mdirect
Porter Airlines Logo
1:35 p.m. - 3:06 p.m.YTZ-IAD
1h 31mdirect
C$ 289Porter Airlines
Find Deal
Sat, 1 Nov - Mon, 3 Nov
Air Canada Logo
9:40 a.m. - 11:17 a.m.DCA-YYZ
1h 37mdirect
Air Canada Logo
8:15 a.m. - 12:19 p.m.YYZ-DCA
4h 04m1 stop
C$ 292Air Canada
Find Deal
Tue, 7 Oct - Tue, 14 Oct
 Logo
6:45 a.m. - 2:05 p.m.BWI-YYZ
7h 20m1 stop
 Logo
6:30 a.m. - 2:48 p.m.YYZ-BWI
8h 18m1 stop
C$ 292
Find Deal
Sat, 1 Nov - Mon, 3 Nov
Air Canada Logo
9:20 p.m. - 10:57 p.m.DCA-YYZ
1h 37mdirect
Air Canada Logo
7:05 p.m. - 8:40 p.m.YYZ-DCA
1h 35mdirect
C$ 293Air Canada
Find Deal
Tue, 7 Oct - Tue, 14 Oct
 Logo
6:45 a.m. - 2:05 p.m.BWI-YYZ
7h 20m1 stop
 Logo
6:30 a.m. - 11:32 p.m.YYZ-BWI
17h 02m1 stop
C$ 296
Find Deal
Thu, 18 Sep - Sun, 21 Sep
Air Transat Logo
11:35 a.m. - 1:08 p.m.IAD-YTZ
1h 33mdirect
Air Transat Logo
8:45 a.m. - 10:16 a.m.YTZ-IAD
1h 31mdirect
C$ 369Air Transat
Find Deal
Thu, 18 Sep - Mon, 22 Sep
United Airlines Logo
6:00 a.m. - 11:45 a.m.DCA-YOW
5h 45m1 stop
United Airlines Logo
12:30 p.m. - 5:42 p.m.YOW-DCA
5h 12m1 stop
C$ 634United Airlines
Find Deal
Sat, 20 Sep - Sat, 27 Sep
United Airlines Logo
12:55 p.m. - 2:26 p.m.DCA-YOW
1h 31mdirect
United Airlines Logo
10:25 a.m. - 12:08 p.m.YOW-DCA
1h 43mdirect
C$ 675United Airlines
Find Deal
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.

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$ 126 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 162.

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.

No, with an average price for the route of C$ 450, prices are generally cheapest when you fly direct.

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$ 303 (return) on average. On the other hand, the most expensive months are August and February, when the average cost of round-trip tickets is C$ 444 and C$ 441 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 Mondays 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 Mondays.

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 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonMarch
Cheapest flightC$ 101
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Baltimore 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 CanadaIAD-YYZJan 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 CanadaIAD-YYZApr 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.

  • 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$ 264 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the afternoon, which is peak travel time and where the average cost of a ticket is C$ 327.

Reviews of the top 4 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.
7.9
Porter AirlinesOverall score based on 344 reviews
8.6Crew
7.0Entertainment
8.0Comfort
8.2Boarding
7.6Food
Airline reviews

I was not happy with AirfareAssist, the agency that kayak advised me would be handling my booking. I was advised by porter airlines that I had been overcharged for the Basic express , a option that I had asked airfare assist to help arrange after I realized that the basic fare I had chosen with porter did not include a carryon. At each checkin porter advised I had been overcharged for this . They advised that money would be refunded to my credit card, however, this is not likely to happen as it is not my name and credit card that appeared on the porter invoice, but that of another individual/agent. When airfare assist was arranging the basic express with porter on my behalf, they asked me to confirm that I agreed to pay $263 USD for this. I did agree, as I was advised this was needed to proceed. When I checked the invoice on the porter website and saw that it was not my name and credit card on the invoice, I was advised that this was how airfareassist processed the payment. The Porter invoice indicated a billed amount of $126USD I will not use Kayak or their designated AirfareAssist again

6.0 GoodAnonymous, Aug 2025YYG - YYZ
Read more Porter Airlines reviews

I was not happy with AirfareAssist, the agency that kayak advised me would be handling my booking. I was advised by porter airlines that I had been overcharged for the Basic express , a option that I had asked airfare assist to help arrange after I realized that the basic fare I had chosen with porter did not include a carryon. At each checkin porter advised I had been overcharged for this . They advised that money would be refunded to my credit card, however, this is not likely to happen as it is not my name and credit card that appeared on the porter invoice, but that of another individual/agent. When airfare assist was arranging the basic express with porter on my behalf, they asked me to confirm that I agreed to pay $263 USD for this. I did agree, as I was advised this was needed to proceed. When I checked the invoice on the porter website and saw that it was not my name and credit card on the invoice, I was advised that this was how airfareassist processed the payment. The Porter invoice indicated a billed amount of $126USD I will not use Kayak or their designated AirfareAssist again

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

The flight was fine see earlier note for the problem

Three hours on the tarmac with almost zero communication from the cockpit. Not when offered a water in the interim. In my 67 years of flying all over the world the worst experience ever. The plane was half empty, however had to pay for seats to sit next to my girlfriend. Extra to take a carry on. I would never fly Porter again even for free.

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

It’s ok just the boarding point is far too far

Check in slow even though completed online check in, there was no bag drop available so had to query for 90mins as only 2 staff on desks.

Flying to a far away destination is a miracle in itself, so please take these with a grain of salt. The seats are a bit tired, and need a freshen up. The entertainment could be a bit newer, especially with all services available now. The food really is where we need help. But again, flying is a privilege, so all is good.

Not so much porter it's your site! Not good

They are a sister company with Air Transat and the two companies do not work well together. If you have any issues the two companies will blame each other and you will miss your flights. The help line does not help

Never book through a third party. Book through Air transats website. Terrible process to get help and many issues happen with them and sister companies because half the flights you book with them aren’t even through air transat.

The plane was pretty full, and we dis not have any includes meal for our 4h30 flight? And on-board entertainment wasn't available, there was no TV or plugging to charger your device on the plane. They told us to download an app if we wanted to watch movies but it never connected, that was a disappointment, the r we st was very good though and the crew were really nice!

Seats were very tight especially for first leg of trip.

Not necessarily a Transat issue but it took 2 hours to go through immigration. Tried to reach out to Transat for resolution but was unable to reach an agent.

The flight was excellent, once it started, however we were delayed two hours when the first plane’s engines wouldn’t start. They found another identical plane and transferred us and our luggage in under two hours and made up almost an hour in the air.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

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.

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Check in staff was incredibly rude and condescending. When I arrived at the gate I had been charged $125 for a checked back. I did have or check a bag. When I brought this to the attention of the staff member who checked me in, she said that she made a mistake and there was nothing she could do about it. I asked her to remove the charge and refund credit card, she said she could not and that I had to call my credit card company to contest the charge. I called Air Canada customer support, was put on hold, after 43 minutes a received a messages stating customer service was overwhelmed with calls and was then hung up on.

Refreshments and Air Hostess was good. Issues with customs in Toronto caused flight to depart and left me behind twice. Vouchers for delayed flight needs to increase.

Long wait to check in at the priority counter in Toronto

I had no communication, receipt etc from Air Canada until hours before flight

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

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.

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.

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