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Cheap flights from Montreal to Washington, D.C. from C$ 227

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 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — WAS
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Montreal to Washington, D.C. are usually found in May or March, booked 57 days in advance, depart on a Saturday or Friday and return on a Tuesday

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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 17 October 2025.

Thu 13/111:40 p.m.YUL - IAD
1 stop3h 34mPorter Airlines
Wed 19/1111:40 a.m.IAD - YUL
1 stop4h 50mPorter Airlines
Deal found 15/10C$ 347
Wed 5/1112:05 p.m.YUL - IAD
1 stop5h 09mPorter Airlines
Mon 10/1111:40 a.m.IAD - YUL
1 stop6h 05mPorter Airlines
Deal found 16/10C$ 358
Fri 14/111:40 p.m.YUL - IAD
1 stop3h 34mPorter Airlines
Mon 17/1111:40 a.m.IAD - YUL
1 stop6h 05mPorter Airlines
Deal found 15/10C$ 359
Mon 17/116:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Thu 20/1111:40 a.m.IAD - YUL
1 stop6h 05mPorter Airlines
Deal found 15/10C$ 361
Tue 18/111:40 p.m.YUL - IAD
1 stop3h 34mPorter Airlines
Fri 12/1211:40 a.m.IAD - YUL
1 stop6h 05mPorter Airlines
Deal found 14/10C$ 364
Fri 21/116:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Tue 25/116:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Deal found 16/10C$ 366
Thu 6/116:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Sun 9/1111:40 a.m.IAD - YUL
1 stop4h 50mPorter Airlines
Deal found 14/10C$ 368
Tue 18/112:13 p.m.YUL - IAD
Nonstop2h 08mUnited Airlines
Tue 9/121:20 p.m.IAD - YUL
Nonstop1h 56mUnited Airlines
Deal found 14/10C$ 372
Fri 31/106:45 a.m.YUL - IAD
1 stop3h 39mPorter Airlines
Tue 4/116:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Deal found 14/10C$ 374
Mon 17/1111:25 a.m.YUL - IAD
1 stop5h 49mPorter Airlines
Fri 12/126:30 p.m.IAD - YUL
1 stop4h 15mPorter Airlines
Deal found 14/10C$ 376
Sat 22/117:00 p.m.YUL - IAD
Nonstop1h 54mMultiple Airlines
Tue 25/116:30 p.m.IAD - YUL
1 stop4h 15mMultiple Airlines
Deal found 14/10C$ 379
Fri 19/128:00 p.m.YUL - DCA
Nonstop1h 56mAir Canada
Sun 28/126:00 a.m.DCA - YUL
Nonstop1h 45mAir Canada
Deal found 16/10C$ 386

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 17 October 2025.

Round-trip from

C$ 347

One-way from

C$ 229

Popular in

June

Cheapest in

May

Average price

C$ 472

Good round-trip deal

C$ 470 or less

Good one-way deal

C$ 267 or less
Porter Airlines
  • Porter Airlines
  • 13/11-19/11
  • 2 total stops
  • 8h 24m total
  • Montreal to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 21/11
  • 1 total stop
  • 3h 39m total
  • Montreal to Washington, D.C.
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Montreal (YMQ) to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Montreal (YMQ) to Washington, D.C. (WAS).
Search Deals

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 17 October 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

Thu 27/11

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

Nonstop2h 08m

Washington, D.C. Dulles Intl

Sun 30/11

1:20 p.m.-3:16 p.m.

Nonstop1h 56m

C$ 372

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 18/11

2:13 p.m.-4:21 p.m.

Nonstop2h 08m

Washington, D.C. Dulles Intl

Tue 9/12

1:20 p.m.-3:16 p.m.

Nonstop1h 56m

C$ 372

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 21/11

11:25 a.m.-5:14 p.m.

1 stop5h 49m

Washington, D.C. Dulles Intl

Fri 12/12

11:40 a.m.-4:30 p.m.

1 stop4h 50m

C$ 381

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 19/11

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

Nonstop2h 08m

Washington, D.C. Dulles Intl

Thu 11/12

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

Nonstop1h 53m

C$ 385

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

8:30 a.m.-10:26 a.m.

Nonstop1h 56m

Washington, D.C. Reagan-National

Thu 13/11

6:00 a.m.-7:45 a.m.

Nonstop1h 45m

C$ 393

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 21/11

3:00 p.m.-8:57 p.m.

1 stop5h 57m

Washington, D.C. Dulles Intl

Tue 9/12

1:20 p.m.-3:16 p.m.

Nonstop1h 56m

C$ 395

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Wed 19/11

1:35 p.m.-3:31 p.m.

Nonstop1h 56m

Washington, D.C. Reagan-National

Thu 11/12

6:00 a.m.-7:45 a.m.

Nonstop1h 45m

C$ 396

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Wed 29/10

8:30 a.m.-10:26 a.m.

Nonstop1h 56m

Washington, D.C. Reagan-National

Sat 1/11

4:35 p.m.-6:25 p.m.

Nonstop1h 50m

C$ 396

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 12/11

2:13 p.m.-4:21 p.m.

Nonstop2h 08m

Washington, D.C. Dulles Intl

Tue 18/11

1:20 p.m.-3:16 p.m.

Nonstop1h 56m

C$ 396

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

Thu 4/12

6:00 a.m.-7:45 a.m.

Nonstop1h 45m

C$ 396

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/10

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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 10 October 2025.

The best time to book flights from Montreal to Washington, D.C. is 57 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, June is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 201). Flying from Montreal to Washington, D.C. in December is currently the most expensive (average of C$ 376). 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 17 October 2025.

It’s typically best to fly out from Montreal to Washington, D.C. in the afternoon. Doing so could potentially save you 40% 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 Saturday afternoons when fares are most often at their lowest. Tuesday 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 17 October 2025.

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

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 (YTZ) is the most affordable 1-stop option, with an average round-trip price of C$ 412.

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 57m.

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 17 October 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
8.0
Very good
381 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Food

7.6

Overall

8.0

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
8.0
Very good
381 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Food

7.6

Overall

8.0

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
8,982 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Food

7.6

Overall

8.0

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
10,307 reviews
Porter Airlines
8.0
Very good
381 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.0

Boarding

8.2

Food

7.6

Overall

8.0

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$ 393, United Airlines can have you in Washington, D.C. from Montreal in 1h 56m. 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$ 307, 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$ 331 and C$ 369, 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$ 227), Air Canada (C$ 230), and United Airlines (C$ 236).

  • 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%), Copa Airlines (95%) or Republic Airways (95%) 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$ 927, our data shows the cheapest flight currently is C$ 199. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl), you can expect to pay C$ 303 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, June is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 201). Flying from Montreal to Washington, D.C. in December is currently the most expensive (average of C$ 376). 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
Hanover
Reston
Fairfax
Ellicott City
Oxon Hill
Gaithersburg
Herndon
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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 215AverageC$ 404FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Porter AirlinesCheapestC$ 307AverageC$ 401FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 331AverageC$ 476FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 369AverageC$ 483FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 462AverageC$ 661FlexibilityNo 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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