YUL - IAD

C$ 240 Find Cheap Flights from Montreal 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 from Montreal to Dulles Intl departing on 12/8. 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 408
Typical prices: C$ 414-C$ 522
Porter Airlines
Thu 22/10Fri 23/10
YUL - IAD • 1 stop
Cheapest direct flights
C$ 414
Typical prices: C$ 410-C$ 536
Air Canada
Fri 4/9Mon 7/9
YUL - IAD • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Air Canada Preferred Economy adds up to 10 cm more legroom than standard seats.
United Priority Boarding helps secure overhead bin space; Premier Access speeds check-in.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 408 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Air Canada and United Airlines. Average duration is 1h 57m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg C$ 442 (round-trip)
Shortest trip • 4h 09m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Montreal to Dulles Intl (YUL-IAD)

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

Thu, 22 Oct - Fri, 23 Oct
Porter Airlines Logo
9:00 a.m. - 3:10 p.m.
YUL
-
IAD
6h 10m
1 stop
Porter Airlines Logo
11:25 a.m. - 6:12 p.m.
IAD
-
YUL
6h 47m
1 stop
C$ 408Porter Airlines
Fri, 28 Aug - Tue, 1 Sep
Porter Airlines Logo
10:35 a.m. - 3:10 p.m.
YUL
-
IAD
4h 35m
1 stop
Porter Airlines Logo
3:50 p.m. - 10:12 p.m.
IAD
-
YUL
6h 22m
1 stop
C$ 408Porter Airlines
Fri, 23 Oct - Fri, 23 Oct
Porter Airlines Logo
6:30 a.m. - 10:45 a.m.
YUL
-
IAD
4h 15m
1 stop
Porter Airlines Logo
3:50 p.m. - 9:12 p.m.
IAD
-
YUL
5h 22m
1 stop
C$ 408Porter Airlines
Fri, 4 Sep - Mon, 7 Sep
Air Canada Logo
12:55 p.m. - 5:08 p.m.
YUL
-
IAD
4h 13m
1 stop
Air Canada Logo
3:45 p.m. - 5:27 p.m.
IAD
-
YUL
1h 42mdirect
C$ 414Air Canada
Fri, 4 Sep - Mon, 7 Sep
Air Canada Logo
5:05 p.m. - 7:01 p.m.
YUL
-
IAD
1h 56mdirect
Air Canada Logo
3:45 p.m. - 5:27 p.m.
IAD
-
YUL
1h 42mdirect
C$ 414Air Canada
Tue, 13 Oct - Sat, 17 Oct
Air Canada Logo
1:05 p.m. - 3:00 p.m.
YUL
-
IAD
1h 55mdirect
Air Canada Logo
3:45 p.m. - 5:23 p.m.
IAD
-
YUL
1h 38mdirect
C$ 414Air Canada
Wed, 23 Sep - Wed, 23 Sep
United Airlines Logo
6:10 a.m. - 1:55 p.m.
YUL
-
IAD
7h 45m
1 stop
United Airlines Logo
5:40 p.m. - 7:45 p.m.
IAD
-
YUL
2h 05mdirect
C$ 434United Airlines
Tue, 22 Sep - Tue, 22 Sep
United Airlines Logo
6:10 a.m. - 11:52 a.m.
YUL
-
IAD
5h 42m
1 stop
United Airlines Logo
5:40 p.m. - 7:45 p.m.
IAD
-
YUL
2h 05mdirect
C$ 434United Airlines
Thu, 17 Sep - Tue, 22 Sep
Multiple Airlines Logo
8:40 a.m. - 3:25 p.m.
YUL
-
IAD
6h 45m
2 stops
Multiple Airlines Logo
11:25 a.m. - 6:12 p.m.
IAD
-
YUL
6h 47m
1 stop
C$ 459Multiple Airlines
Fri, 28 Aug - Thu, 3 Sep
Multiple Airlines Logo
5:05 p.m. - 7:01 p.m.
YUL
-
IAD
1h 56mdirect
Multiple Airlines Logo
3:50 p.m. - 8:00 p.m.
IAD
-
YUL
4h 10m
1 stop
C$ 462Multiple Airlines
Booking Insights

KAYAK's insights & trends for Montreal to Dulles Intl flights

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

How much is a round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport departing in August.

Flight prices are below average for this route right now.

Flights to Washington, D.C. Dulles Intl Airport from Montreal Pierre Elliott Trudeau Intl Airport usually cost between C$ 415 and C$ 636 in August.
The lowest price found in the past 5 days was C$ 408 on Porter Airlines (11 Aug–25 Aug).

What’s the cheapest day of the week to fly from Montreal to Washington Dulles Airport?

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

If you are looking for a flight deal from Montreal to Washington Dulles Airport, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Thursday is the cheapest day to fly and Tuesday is the most expensive.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport 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 from Montreal Pierre Elliott Trudeau Intl Airport 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 from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport is February, where tickets cost C$ 379 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is C$ 570 and C$ 542 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport?

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 1 stop layover the cheapest option at C$ 541 on average.

Expert advice

Expert advice for your flight from Montreal to Dulles Intl

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Mark Stachiew

Mark Stachiew

Expert on YUL

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Good to know

Low season

February

Cheapest flight

C$ 240
Best time to beat the crowds (21% less expensive on average)
Most popular time to fly (4% more expensive on average)
Flight from Montreal to Washington Dulles Airport

When to book flights from Montreal to Dulles Intl

Are your dates flexible? Find out the best times to travel from Montreal to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to Washington Dulles Airport flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport?

    In the last 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport was C$ 240 for a one-way ticket and C$ 408 for a round-trip.

  • Which airports will I be using when flying from Montreal to Washington Dulles Airport?

    Montreal airport is called Montreal Pierre Elliott Trudeau Intl and the only airport in Washington Dulles Airport is Washington, D.C. Dulles Intl.

  • Which airlines offer Wi-Fi service onboard planes from Montreal to Washington Dulles Airport?

    All the following airlines offer inflight Wi-Fi service on the Montreal to Washington Dulles Airport flight route: Air Canada, United Airlines, WestJet, Air France, Delta, and Lufthansa.

  • Which aircraft models fly most regularly from Montreal to Washington Dulles Airport?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Montreal to Washington Dulles Airport flight route.

  • Which airline alliances offer flights from Montreal to Washington Dulles Airport?

    Star Alliance is the only airline alliance operating flights between Montreal and Washington Dulles Airport.

  • On which days can I fly direct from Montreal to Washington Dulles Airport?

    There are direct flights from Montreal to Washington Dulles Airport on a daily basis.

  • Which is the best airline for flights from Montreal to Washington, D.C., Porter Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to Washington, D.C. are Porter Airlines and United Airlines. With an average price for the route of C$ 416 and an overall rating of 8.0, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 600 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Montreal 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 from Montreal to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal 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 from Montreal 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 Montreal 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 to Montreal with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal 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 from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 307 or less one-way and C$ 625 or less round-trip.

Prefer to fly direct from Montreal to Washington Dulles Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl.
Find which airlines fly direct from Montreal Pierre Elliott Trudeau Intl Airport to Washington, D.C. Dulles Intl Airport, which days they fly and book direct flights.

Direct departures

Montreal Pierre Elliott Trudeau Intl to Washington, D.C. Dulles Intl

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

Direct returns

Washington, D.C. Dulles Intl to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

Reviews of the top 3 airlines flying from Montreal to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Washington, D.C.. 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 Montreal 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
6.9Entertainment
8.2Boarding
8.6Crew
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.

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..

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.

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

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

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.

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

Entertainment center did not work and no electric available at seat for 11 hour flight. Didn’t have access to overhead light or call button. Food was tasteless and had a high salt (27 %) of recommended daily salt intake

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.

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😍👍.

Flight got canceled last minute and rescheduled 3 days later, as if we do not have jobs and children to return to. 5+ hours on hold with customer support with no answer. We booked a different airline and spent 3x as much to escape Montreal bc of Air Canada. Still haven’t heard from them. Boooo

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

One of the flight attendants was very attentive to a couple traveling with a child under 1 one year old.

My flight has been canceled and I had to cancel entire trip.

I’m 5’3 115 lbs and felt so cramped in this express jet. My carry on actually meets the requirements and still had to be stuffed Into the overhead and barely fit down the aisle. Not a great experience. Air Canada needs to replace these planes.

My wheelchair was sent somewhere else, it wasn’t at my ending destination.

The plane used on this flight didn't have a working air conditioner. It was extraordinarily hot and uncomfortable.

Slight delay with arriving flight but explained and still made our destination on time

Both flights were delayed in taking off. The flight to Montreal was delayed by several hours. We also sat on the runway for quite a while for both flights.

Everything you need to know for your flight from Montreal to Dulles Intl

Information on your arrival and departure airports