$133 Find Cheap Flights from Canada to Washington Dulles Airport - 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 to Dulles Intl departing on 9/3. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Canada to Dulles Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Canada to Dulles Intl 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 Canada to Dulles Intl

Thu, Aug 27 - Sun, Aug 30
Air Canada Logo
3:15 pm - 4:41 pm
YTZ
-
IAD
1h 26mnonstop
Air Canada Logo
5:20 pm - 6:56 pm
IAD
-
YTZ
1h 36mnonstop
$206Air Canada
Wed, Oct 14 - Sat, Oct 17
Air Canada Logo
3:15 pm - 4:38 pm
YTZ
-
IAD
1h 23mnonstop
Air Canada Logo
5:15 pm - 6:46 pm
IAD
-
YTZ
1h 31mnonstop
$206Air Canada
Wed, Sep 2 - Thu, Sep 3
Porter Airlines Logo
1:40 pm - 3:10 pm
YTZ
-
IAD
1h 30mnonstop
Porter Airlines Logo
11:25 am - 12:55 pm
IAD
-
YTZ
1h 30mnonstop
$209Porter Airlines
Sat, Aug 29 - Tue, Sep 1
Air Canada Logo
10:45 am - 3:01 pm
YTZ
-
IAD
4h 16m
1 stop
Air Canada Logo
5:20 pm - 6:51 pm
IAD
-
YTZ
1h 31mnonstop
$209Air Canada
Tue, Aug 18 - Sat, Aug 22
Porter Airlines Logo
9:15 am - 10:45 am
YTZ
-
IAD
1h 30mnonstop
Porter Airlines Logo
3:50 pm - 5:20 pm
IAD
-
YTZ
1h 30mnonstop
$211Porter Airlines
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
12:45 pm - 2:22 pm
YYZ
-
IAD
1h 37mnonstop
Multiple Airlines Logo
9:55 am - 11:21 am
IAD
-
YYZ
1h 26mnonstop
$227Multiple Airlines
Tue, Sep 8 - Wed, Sep 9
Multiple Airlines Logo
7:43 pm - 9:24 pm
YYZ
-
IAD
1h 41mnonstop
Multiple Airlines Logo
9:55 am - 11:20 am
IAD
-
YYZ
1h 25mnonstop
$227Multiple Airlines
Sat, Sep 12 - Sat, Sep 12
United Airlines Logo
7:00 am - 1:55 pm
YYZ
-
IAD
6h 55m
1 stop
United Airlines Logo
10:19 pm - 11:54 pm
IAD
-
YYZ
1h 35mnonstop
$237United Airlines
Fri, Sep 11 - Sat, Sep 12
United Airlines Logo
5:15 pm - 12:44 am
YYZ
-
IAD
7h 29m
1 stop
United Airlines Logo
12:43 pm - 2:19 pm
IAD
-
YYZ
1h 36mnonstop
$237United Airlines
Fri, Sep 4 - Tue, Sep 8
Porter Airlines Logo
6:30 am - 10:45 am
YUL
-
IAD
4h 15m
1 stop
Porter Airlines Logo
3:50 pm - 9:12 pm
IAD
-
YUL
5h 22m
1 stop
$291Porter Airlines
Booking Insights

KAYAK's insights & trends for flights to Dulles Intl

Get data-powered insights and trends for flights to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Washington Dulles Airport?

These are the best round-trip prices found by users searching on KAYAK in the last 5 days.

In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Toronto, at $209 return. The most popular connection is from Toronto to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $211 in the last 5 days.

How much is a flight to Washington, D.C. Dulles Intl Airport?

The average and cheapest price for all round-trip flights to Washington, D.C. Dulles Intl Airport from each origin found by users searching on KAYAK in the last month.

A flight to Washington, D.C. Dulles Intl Airport costs $362 on average. The cheapest price found on KAYAK in the last 2 weeks cost $118 and departed from Toronto Island Airport. The most popular routes on KAYAK are Toronto to Washington, D.C. Dulles Intl Airport which costs $478 on average, and Montreal to Washington, D.C. Dulles Intl Airport, which costs $605 on average.

See prices from:

What is the cheapest day to fly to Washington, D.C.?

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

Based on KAYAK data, the cheapest day to fly to Washington, D.C. is Friday 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 $682 on average.

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights to Washington, D.C. Dulles Intl Airport, 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 to Washington, D.C. Dulles Intl Airport is January, where tickets cost $297 on average for return flights. On the other hand, the most expensive months are June and July, where the average cost of tickets from Canada is $375 and $369 respectively. For one-way flights, the best month to travel is November with an average price of $208.

What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

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

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is generally in the evening, when round-trip flights cost $283 on average. The most expensive time of day to fly to Washington, D.C. Dulles Intl Airport is generally at night, which is peak travel time and where the average cost of a ticket is $544.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

If you’re looking for cheap airfare to Washington, D.C. Dulles Intl Airport, 25% of our users found tickets to Washington, D.C. Dulles Intl Airport for the following prices or less: From Toronto Island Airport $193 round-trip, from Calgary $202 round-trip, from Toronto Pearson Intl Airport $307 round-trip.

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to Washington, D.C. Dulles Intl Airport, 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, you should book around 2 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low season

January

Cheapest flight

$133
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Toronto Island to Washington Dulles Airport

Flights from Canada to Dulles Intl: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Canada to Dulles Intl 
Verified travelerFlew with Air Canada
YYZ
-
IAD
Dec 2024
Get on a regional sized (smaller than Boeing 737 or Airbus A320) jet if you can, they are older and have more legroom than newer aircraft.
Verified travelerFlew with United Airlines
YYZ
-
IAD
Nov 2024
Do not carry bigger the specified sized bags for cabin baggage. Only one carry on ba

FAQs - booking Washington Dulles Airport flights

  • What is the cheapest flight to Washington Dulles Airport?

    In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Toronto, at $209 return. The most popular connection is from Toronto to Washington Dulles Airport and KAYAK users have found round-trip deals for as low as $211 in the last 5 days.

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    The city center of Washington, D.C. is 22 miles from Washington, D.C. Dulles Intl Airport.

  • How much is a flight to Washington, D.C.?

    On average, a flight to Washington, D.C. costs $362. The cheapest price found on KAYAK in the last 2 weeks cost $118 and departed from Toronto Island Airport.

  • How does KAYAK find such low prices on flights to Washington Dulles Airport?

    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 to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Washington Dulles Airport?

    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 to Washington Dulles Airport 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 to Washington Dulles Airport?

    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 to Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington Dulles Airport

  • Looking for cheap airfare to Washington Dulles Airport? 25% of our users found round-trip tickets to Washington Dulles Airport for the following prices or less: From Calgary $228, from Vancouver Intl $332, from Ottawa $1,643
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington Dulles Airport flight deals.

Reviews of the top 3 airlines serving from Canada to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Canada to Washington, D.C.. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to Dulles Intl? 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 449 reviews
8.0Comfort
8.6Crew
8.2Boarding
6.9Entertainment
7.5Food
Airline reviews

Look, I understand that Kayak doesn't know I cancelled my flight on Porter. So I didn't actually fly yesterday. My main disappointment is with Porter ticket fare policies, and maybe you can pass this on to them: At my employer's request, I had booked a full fare ticket with no change fees since my trip to Toronto would likely be extended. Indeed, when I went to change my flight home to a later date, I was told the Fare Difference would cost an additional $550. So much for no change fees lol! While I had the agent on the line, I hopped over to Kayak, searched for new flights on the date in question, and saw a one-way ticket that got me home for only $355. So I got reimbursed about $450for the unused half of my roundtrip and bought a new ticket for $355. What good is a full fare / no change fee ticket if they screw you with "fare difference" BS. I'm still flying home on Porter Airlines but they just lost a hundred bucks with their stupid shenanigans.

4.0 OkayJeff, Jul 2026
YYZ - SFO
Read more Porter Airlines reviews

Look, I understand that Kayak doesn't know I cancelled my flight on Porter. So I didn't actually fly yesterday. My main disappointment is with Porter ticket fare policies, and maybe you can pass this on to them: At my employer's request, I had booked a full fare ticket with no change fees since my trip to Toronto would likely be extended. Indeed, when I went to change my flight home to a later date, I was told the Fare Difference would cost an additional $550. So much for no change fees lol! While I had the agent on the line, I hopped over to Kayak, searched for new flights on the date in question, and saw a one-way ticket that got me home for only $355. So I got reimbursed about $450for the unused half of my roundtrip and bought a new ticket for $355. What good is a full fare / no change fee ticket if they screw you with "fare difference" BS. I'm still flying home on Porter Airlines but they just lost a hundred bucks with their stupid shenanigans.

I flew with Porter yesterday and overall had a positive experience. The flight was delayed, but the airline did a good job keeping passengers informed with frequent updates throughout the process. My biggest challenge was actually in Terminal 3, where the speaker system wasn’t very clear. It was often difficult to hear the announcements, which made it harder to follow updates at the gate. On board, the experience improved significantly. The aircraft felt very new and well maintained, and the seats were surprisingly comfortable for a short-haul flight. One of the flight attendants seemed a little disengaged, but the other was excellent—friendly, professional, and a pleasure to interact with. Despite the delay, the comfortable aircraft, clear communication from Porter, and positive onboard service made for a good overall experience.

It was okay. Had a thing with the front desk, she had me repack my suitcases to have them be under the weight restrictions, but then the other one was overweight, she argued with me about it when there were tons of people in line. Wasn’t great.

Organization and the adjusted times but the snacks could be of a bigger portion

Our flight was delayed by a bit. I appreciated that we were kept informed on why periodically. Boarding was fine. I overheard one flight attendant sounding very rude to a passenger who was not paying attention to the safety demonstration. The snacks were minimal as it was a short flight. There was no entertainment. Overall the flight was good back to LGA.

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

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

The flight was delayed by more than one hour. The terminal was consequently overcrowded and hot. We lost our car reservation and hit rush hour traffic in Boston, which added two hours stuck in traffic to our trip.

What would be infinitely better if for Kayak to not offer this flight as if it was completely different airlines rather than United and then filtering me through some creepy discount site.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

The flight was canceled. I couldn't get on another flight. Meal voucher wouldn't work. The whole experience was a clusterfuck.

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

l really enjoy very much the flight was very pleasant

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

Very nice and clean plane. Transit time between flights was tight though

The flight was delayed, it took longer than anticipated because of weather, and they broke my luggage.

Airline staff was good the checkin process was ok but the plane itself was very bad the comfort was worst it was worst and the most stiff 5 hours of my life i felt claustrophobic

Brutal as can be … delayed by 24 hours then delayed and hour on the tarmac then delayed three hours in Chicago, screaming child behind me kicking the seat for the better part of 10 hours… couldn’t be worse

The flight was good. My luggage didn’t land with me when I arrived in Columbus. So grateful I was able to get my luggage back within the 2 hours😍👍.

Economy seats always cramped, no meal on international flight, no plugs for electronics, but we got there and cabin crew was excellent.

Pros: The airplane was new and had in-flight entertainment (tablet behind seats) with new movies instead of watching on personal devices. Cons: the flight time was changed without informing us. When I booked the flight, the time was 13:30pm (also in the email confirmation). However, when I reached the airport, the time was conveniently changed to 14:55pm. When I asked at the counter, they said the flight always took off at this time. The booking was made by Air Canada, but the flight was operated by United.

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 .

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

Flight was delayed by 45 min. No problems. Everyone took it in stride.

The Flight Attendant was particularly helpful to my wife, who was having a bad day.

We had no idea that you had to check in with United so we were waiting at a closed Air Canada window for about an hour before we found out we had to us United.

Boarding staff provided up-to-date flight information. They were professional and courteous. The flight was on-time and comfortable (adequate leg room). Early landing and orderly exited the aircraft. Ground baggage handlers were quick to offload carry-on bags. GREAT EXPERIENCE WITH HK EXPRESS

The flight had maintenance issues eventually resulting in cancelation. Additionally, the staff on the ground was not helpful to assist with rebooking the flights resulting in an overall unpleasant experience and we missed a family wedding due to the cancelation.

Traveling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Winchester
Linthicum Heights
Hanover
Springfield
Gaithersburg
Towson
Martinsburg
Oxon Hill
Owings Mills
Charles Town
Greenbelt
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Edgewood
Camp Springs
Ellicott City
Chesapeake Beach
Pikesville
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Lutherville Timonium

Everything you need to know for your flight to Dulles Intl

Information on the airport you'll fly into in Washington, D.C.