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Cheap flights from Montreal to Washington, D.C. from C$ 214

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/10. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — WAS
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Montreal to Washington, D.C. are usually found in May or March, booked 44 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Montreal to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 September 2025.

Round-trip from

C$ 341

One-way from

C$ 214

Popular in

June

Cheapest in

May

Average price

C$ 463

Good round-trip deal

C$ 580 or less

Good one-way deal

C$ 446 or less
Porter Airlines
  • Porter Airlines
  • 29/9-1/10
  • 2 total stops
  • 12h 06m total
  • Montreal to Washington, D.C.
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Porter Airlines
  • Porter Airlines
  • 9/10
  • 1 total stop
  • 4h 21m total
  • Montreal to Washington, D.C.
Search Deals
High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Montreal (YMQ) to Washington, D.C. (WAS).
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Find flight deals from Montreal to Washington, D.C.

Cheapest flights from Montreal to Washington, D.C.
Explore the most affordable flight options available from Montreal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Mon 29/98:55 a.m.YUL - IAD
1 stop6h 11mPorter Airlines
Wed 1/104:20 p.m.IAD - YUL
1 stop5h 55mPorter Airlines
Deal found 13/9C$ 341
Wed 1/108:55 a.m.YUL - IAD
1 stop6h 11mPorter Airlines
Sat 29/111:45 p.m.IAD - YUL
1 stop5h 00mPorter Airlines
Deal found 13/9C$ 343
Tue 21/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Fri 24/1011:35 a.m.IAD - YUL
1 stop4h 25mPorter Airlines
Deal found 13/9C$ 344
Thu 30/101:40 p.m.YUL - IAD
1 stop3h 34mPorter Airlines
Fri 31/1011:40 a.m.IAD - YUL
1 stop4h 50mPorter Airlines
Deal found 15/9C$ 347
Sat 11/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Wed 15/104:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 14/9C$ 348
Sat 27/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 28/911:35 a.m.IAD - YUL
1 stop4h 25mPorter Airlines
Deal found 13/9C$ 350
Thu 30/101:40 p.m.YUL - IAD
1 stop3h 34mPorter Airlines
Thu 6/1111:40 a.m.IAD - YUL
1 stop4h 50mPorter Airlines
Deal found 15/9C$ 352
Thu 25/910:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 28/911:35 a.m.IAD - YUL
1 stop6h 30mPorter Airlines
Deal found 12/9C$ 354
Wed 15/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sat 18/104:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 13/9C$ 355
Sat 11/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sat 18/104:20 p.m.IAD - YUL
1 stop3h 50mPorter Airlines
Deal found 15/9C$ 356
Wed 1/1010:45 a.m.YUL - IAD
1 stop4h 21mPorter Airlines
Sun 5/1011:35 a.m.IAD - YUL
1 stop4h 25mPorter Airlines
Deal found 15/9C$ 361
Fri 3/108:30 a.m.YUL - DCA
Nonstop1h 50mAir Canada
Mon 6/106:00 a.m.DCA - YUL
Nonstop1h 49mAir Canada
Deal found 13/9C$ 365

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 September 2025.
Use the filters below to find and compare flights from Montreal to Washington, D.C. that are best for you.

Fly from

Montreal

Fly to

Washington, D.C.

Route

Depart

Return

Price

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Mon 29/9

8:55 a.m.-3:06 p.m.

1 stop6h 11m

Washington, D.C. Dulles Intl

Wed 1/10

4:20 p.m.-10:15 p.m.

1 stop5h 55m

C$ 341

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Sat 18/10

8:15 a.m.-12:08 p.m.

1 stop3h 53m

Washington, D.C. Reagan-National

Sat 25/10

6:00 a.m.-7:49 a.m.

Nonstop1h 49m

C$ 366

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

9:15 a.m.-11:23 a.m.

Nonstop2h 08m

Washington, D.C. Dulles Intl

Sun 30/11

9:45 a.m.-11:30 a.m.

Nonstop1h 45m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 10/10

2:20 p.m.-4:18 p.m.

Nonstop1h 58m

Washington, D.C. Dulles Intl

Sat 18/10

5:37 p.m.-7:45 p.m.

Nonstop2h 08m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 3/10

9:15 a.m.-11:13 a.m.

Nonstop1h 58m

Washington, D.C. Dulles Intl

Sun 19/10

9:35 a.m.-11:28 a.m.

Nonstop1h 53m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 24/10

7:10 p.m.-9:05 p.m.

Nonstop1h 55m

Washington, D.C. Dulles Intl

Sun 26/10

9:45 a.m.-11:38 a.m.

Nonstop1h 53m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 31/10

9:15 a.m.-11:23 a.m.

Nonstop2h 08m

Washington, D.C. Dulles Intl

Sat 1/11

9:45 a.m.-11:30 a.m.

Nonstop1h 45m

C$ 370

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 26/11

7:00 p.m.-8:54 p.m.

Nonstop1h 54m

Washington, D.C. Dulles Intl

Tue 2/12

9:45 a.m.-11:38 a.m.

Nonstop1h 53m

C$ 370

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

8:15 a.m.-12:08 p.m.

1 stop3h 53m

Washington, D.C. Reagan-National

Sun 5/10

6:00 a.m.-7:49 a.m.

Nonstop1h 49m

C$ 372

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Wed 26/11

8:00 p.m.-9:56 p.m.

Nonstop1h 56m

Washington, D.C. Reagan-National

Tue 2/12

12:55 p.m.-7:14 p.m.

1 stop6h 19m

C$ 377

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 60 results
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Best time to book a flight from Montreal to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Montreal to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Washington, D.C.. Price data was last updated on 12 September 2025.

The best time to book flights from Montreal to Washington, D.C. is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 256). Flying from Montreal to Washington, D.C. in October is currently the most expensive (average of C$ 352). 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 WAS?

Find hourly flight availability from Montreal to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

It’s typically best to fly out from Montreal to Washington, D.C. in the afternoon. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Montreal to Washington, D.C.. Price data was last updated on 16 December 2024.

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

Weekly flight availability from Montreal to Washington, D.C.

Explore weekly flight availability from Montreal to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 September 2025.

The most flights from YMQ to WAS are scheduled on a Tuesday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

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

What’s the top layover airport for flights from Montreal to Washington, D.C.?

Share of one-stop round-trip flights from Montreal to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Toronto (YTZ) – chosen by Cheapflights users on 95% of one-stop itineraries from Montreal to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from Montreal to Washington, D.C.?

Average round-trip fare for 1-stop flights from Montreal to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 407.

What’s the fastest layover option from Montreal to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from Montreal to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YTZ) have the shortest average one-way travel time for 1-stop routes: 3h 56m.

Which airport typically offers the quickest layover for flights from Montreal to Washington, D.C.?

Average layover duration for 1-stop one-way flights from Montreal to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YTZ) offer the fastest connection on this route, with an average layover time of 1h 13m.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 15 September 2025.
Get a feel of what it's like to fly with Porter Airlines,United Airlines, andAir Canada from Montreal to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Food

7.6

Overall

7.9

Comfort

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Food

7.6

Overall

7.9

Comfort

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,929 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Food

7.6

Overall

7.9

Comfort

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews
Check prices

Crew

8.6

Boarding

8.1

Food

7.6

Overall

7.9

Comfort

7.9

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Montreal to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For as low as C$ 366, Porter Airlines can have you in Washington, D.C. from Montreal in 3h 53m. Airlines will cover a distance of 782 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at C$ 300, Porter Airlines will fly you from Montreal to Washington, D.C. and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from C$ 326 and C$ 363, respectively. You may be able to fly from Montreal to Washington, D.C. for 35% less than the average price by searching for these airlines.

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

    The cheapest airlines for a one-way flight from Montreal to Washington, D.C. are Porter Airlines (C$ 214), Air Canada (C$ 222), and United Airlines (C$ 245).

  • What are the most popular routes from Montreal to Washington, D.C.?

    When deciding which route to take from Montreal to Washington, D.C. consider Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl, Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Reagan-National or Montreal Pierre Elliott Trudeau Intl - Baltimore/Washington as they are the most popular.

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

    Consider Sun Country Air (100%), Avianca (87%) or Copa Airlines (86%) when booking your flight. These represent the most reliable airlines when flying from Montreal to Washington, D.C..

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

    While on average a flight from Montreal to Washington, D.C. is generally C$ 836, our data shows the cheapest flight currently is C$ 213. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl), you can expect to pay C$ 340 for that flight.

  • Can I find deals for flights from Montreal to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Montreal to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to Washington, D.C.?

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

  • Can I find deals for business class flights from Montreal to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Montreal to Washington, D.C. 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.?

    Currently, February is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 256). Flying from Montreal to Washington, D.C. in October is currently the most expensive (average of C$ 352). 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Herndon
Hanover
Reston
Fairfax
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Alexandria
Manassas
Fredericksburg
Rockville

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Montreal to Washington, D.C.

Discover the top 5 airlines that operate flights from Montreal to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 211AverageC$ 397FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 300AverageC$ 385FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 326AverageC$ 471FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 363AverageC$ 539FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 455AverageC$ 648FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to Washington, D.C.?

Cheapflights helps you search for flights from Montreal to Washington, D.C. via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Washington, D.C.?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Montreal.

Can Cheapflights find flights from Montreal to Washington, D.C. with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to Washington, D.C., users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Montreal to Washington, D.C. become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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