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Cheap flights from Montreal to Washington, D.C. Dulles Intl Airport from C$ 242

YMQ — IAD
20 Nov — 27 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to Dulles Intl

Fri 6/1110:25 a.m. -
1 stop6h 22m
Sun 8/115:20 p.m. -
1 stop4h 25m
Deal found 19/10C$ 415
Thu 5/1110:25 a.m. -
1 stop6h 22m
Sun 8/116:25 p.m. -
1 stop3h 45m
Deal found 20/10C$ 419
Thu 5/1110:10 a.m. -
1 stop5h 35m
Sun 8/115:20 p.m. -
1 stop4h 25m
Deal found 20/10C$ 422
Sun 8/118:50 a.m. -
2 stops7h 57m
Mon 9/115:20 p.m. -
1 stop4h 25m
Deal found 20/10C$ 425
Sun 8/119:45 a.m. -
1 stop7h 59m
Mon 9/116:25 p.m. -
1 stop3h 45m
Deal found 19/10C$ 429
Fri 18/126:25 p.m. -
Nonstop1h 58m
Fri 15/19:55 a.m. -
2 stops10h 58m
Deal found 20/10C$ 430
Fri 13/116:25 p.m. -
Nonstop1h 58m
Sun 22/119:55 a.m. -
Nonstop1h 43m
Deal found 20/10C$ 433
Sun 13/129:45 a.m. -
1 stop8h 00m
Thu 14/111:20 a.m. -
1 stop4h 40m
Deal found 20/10C$ 435
Thu 5/116:00 a.m. -
1 stop5h 34m
Fri 6/115:13 p.m. -
1 stop6h 12m
Deal found 19/10C$ 437

Find flight deals from Montreal to Dulles Intl

Round-trip from

C$ 415

One-way from

C$ 242

Popular in

March

Cheapest in

February

Average price

C$ 831

Good round-trip deal

C$ 670 or less

Good one-way deal

C$ 432 or less
Air Canada
  • Air Canada
  • 6/11-8/11
  • 2 total stops
  • 10h 47m total
  • Montreal to Washington, D.C.
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Air Canada
  • Air Canada
  • 6/12-31/12
  • 1 total stop
  • 6h 22m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 28 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease (C$ 78 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Montreal (YMQ) to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Montreal (YMQ) to Washington, D.C. Dulles Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Montreal to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 5/3

6:15 p.m.-12:20 a.m.

1 stop6h 05m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 250
Quickest round-trip

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 20/11

6:25 p.m.-8:23 p.m.

Nonstop1h 58m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 287

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 14/11

7:00 a.m.-4:23 p.m.

1 stop9h 23m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 291

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Mon 30/11

7:00 a.m.-3:59 p.m.

1 stop8h 59m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 293

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 20/11

4:50 p.m.-11:21 p.m.

1 stop6h 31m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 293

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 11/12

6:39 p.m.-12:41 a.m.

1 stop6h 02m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 293

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 1/12

6:00 a.m.-10:42 a.m.

1 stop4h 42m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 293

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 5/3

9:30 a.m.-11:43 a.m.

Nonstop2h 13m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 321

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 22/12

9:15 a.m.-11:34 a.m.

Nonstop2h 19m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 321

MontrealWashington, D.C.

YUL Montreal Pierre Elliott Trudeau Intl - IAD Washington, D.C. Dulles Intl

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 19/11

7:00 a.m.-8:11 p.m.

2 stops13h 11m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 333

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/10

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Montreal to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Montreal with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Montreal to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Montreal to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 380). Flying from Montreal to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of C$ 629). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YMQ to IAD?

Unlike in the evening, when flights are generally more expensive, you can save up to 23% on flights from Montreal to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from Montreal to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.
Montreal to Washington, D.C. Dulles Intl Airport flights typically cost between C$ 527 and C$ 816 in November.
The cheapest round-trip price found within the last 5 days was C$ 415 on Air Canada (6 Nov-8 Nov).

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

Travelers seeking maximum savings on their Montreal to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Dulles Intl

Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAir Canada from Montreal to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Entertainment

6.9

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Porter Airlines
8.0
Very good
467 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Entertainment

6.9

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
United Airlines
7.3
Good
10,394 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Entertainment

6.9

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.
Air Canada
7.1
Good
11,790 reviews
Porter Airlines
8.0
Very good
467 reviews
Check prices

Food

7.6

Comfort

8.0

Entertainment

6.9

Crew

8.6

Boarding

8.2

Overall

8.0

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Related info for your journey

  • How long is the flight from Montreal to Washington, D.C. Dulles Intl Airport?

    A quick flight from Montreal to Washington, D.C. Dulles Intl Airport can take about 6h 02m. Delta provides one of the quickest options available for as low as C$ 419. There are 785 km between Montreal and Washington, D.C. Dulles Intl Airport.

  • What are the cheapest airlines flying from Montreal to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Porter Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at C$ 304. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at C$ 374 and C$ 444, respectively. Porter Airlines is 54% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Montreal to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airline one-way is Porter Airlines, with whom users have recently found tickets for as low as C$ 197. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from Montreal to Washington, D.C. Dulles Intl Airport for a low price.

  • What are the most reliable airlines from Montreal to Washington, D.C. Dulles Intl Airport?

    The top 3 most reliable airlines when flying from Montreal to Washington, D.C. Dulles Intl Airport are Copa Airlines (93%), Republic Airways (93%) and Avianca (90%).

  • What are the cheapest flights from Montreal to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for C$ 286. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl) can be booked for C$ 361 on average, our data indicates C$ 1,736 when flying from Montreal to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Montreal to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Montreal to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Dulles Intl.

  • Can I find deals for business class flights from Montreal to Dulles Intl?

    Yes. Cheapflights offers flight deals from Montreal to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. Dulles Intl Airport (average of C$ 380). Flying from Montreal to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of C$ 629). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Winchester
Hanover
College Park
Alexandria
Oxon Hill
Gaithersburg
Chantilly
Reston
Herndon
Ellicott City
Arlington
Fredericksburg
Ashburn
Rockville

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Montreal to Dulles Intl

AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 304AverageC$ 432FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 374AverageC$ 518FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 444AverageC$ 567FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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How does Cheapflights help users find flights from Montreal to Dulles Intl?

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal to Dulles Intl.

Can Cheapflights find flights from Montreal to Dulles Intl with no change fees?

Need flexible booking options for your flight to Dulles Intl from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Montreal today and book when prices fit your budget.

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