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Cheap flights from Montreal to Washington, D.C. from C$ 241

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — WAS
29 Aug — 5 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to Washington, D.C. are usually found in October or November, booked 28 days in advance, depart on a Friday or Saturday and return on a Thursday

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

Enter your travel dates to find the best prices.

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 30 July 2026.

Fri 28/810:35 a.m.
YUL
-
IAD
1 stop4h 35m
Porter Airlines
Tue 1/93:50 p.m.
IAD
-
YUL
1 stop6h 22m
Porter Airlines
Deal found 26/7C$ 410
Fri 18/96:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Sun 20/93:50 p.m.
IAD
-
YUL
1 stop5h 22m
Porter Airlines
Deal found 25/7C$ 411
Fri 14/86:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Mon 17/83:50 p.m.
IAD
-
YUL
1 stop4h 20m
Porter Airlines
Deal found 25/7C$ 413
Wed 19/86:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Thu 27/83:50 p.m.
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Deal found 26/7C$ 414
Thu 17/96:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Sat 19/911:25 a.m.
IAD
-
YUL
1 stop6h 47m
Porter Airlines
Deal found 28/7C$ 415
Mon 24/86:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Mon 31/83:50 p.m.
IAD
-
YUL
1 stop4h 10m
Porter Airlines
Deal found 27/7C$ 417
Wed 12/86:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Mon 24/83:50 p.m.
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Deal found 28/7C$ 418
Fri 21/86:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Mon 24/83:50 p.m.
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Deal found 28/7C$ 420
Thu 3/96:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Tue 8/93:50 p.m.
IAD
-
YUL
1 stop5h 22m
Porter Airlines
Deal found 29/7C$ 421
Thu 3/96:30 a.m.
YUL
-
IAD
1 stop4h 15m
Porter Airlines
Sun 6/93:50 p.m.
IAD
-
YUL
1 stop4h 10m
Porter Airlines
Deal found 26/7C$ 422
Fri 28/88:00 p.m.
YUL
-
DCA
Nonstop1h 48m
Air Canada
Mon 31/86:00 a.m.
DCA
-
YUL
Nonstop1h 47m
Air Canada
Deal found 26/7C$ 422
Sat 12/98:30 a.m.
YUL
-
DCA
Nonstop1h 50m
Air Canada
Sat 19/94:20 p.m.
DCA
-
YUL
Nonstop1h 53m
Air Canada
Deal found 29/7C$ 424

Find 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 30 July 2026.

Round-trip from

C$ 410

One-way from

C$ 241

Popular in

July

Cheapest in

October

Average price

C$ 584

Good round-trip deal

C$ 491 or less

Good one-way deal

C$ 308 or less
Porter Airlines
  • Porter Airlines
  • 28/8-1/9
  • 2 total stops
  • 10h 57m total
  • Montreal to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 12/8
  • 1 total stop
  • 4h 15m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 30 July 2026.
Use the filters below to find and compare flights from Montreal to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

6:10 a.m.-11:52 a.m.

1 stop5h 42m

Washington, D.C. Dulles Intl

Wed 16/9

5:40 p.m.-7:45 p.m.

Nonstop2h 05m

C$ 437

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 27/8

6:30 a.m.-10:45 a.m.

1 stop4h 15m

Washington, D.C. Dulles Intl

Thu 3/9

3:50 p.m.-10:12 p.m.

1 stop6h 22m

C$ 452

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 27/8

6:30 a.m.-10:45 a.m.

1 stop4h 15m

Washington, D.C. Dulles Intl

Mon 31/8

3:50 p.m.-10:10 p.m.

1 stop6h 20m

C$ 462

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

6:30 a.m.-10:45 a.m.

1 stop4h 15m

Washington, D.C. Dulles Intl

Tue 6/10

11:25 a.m.-6:12 p.m.

1 stop6h 47m

C$ 463

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Tue 1/9

5:05 p.m.-7:01 p.m.

Nonstop1h 56m

Washington, D.C. Dulles Intl

Wed 2/9

6:15 a.m.-11:59 a.m.

1 stop5h 44m

C$ 489

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

7:00 a.m.-5:30 p.m.

1 stop10h 30m

Washington, D.C. Reagan-National

Tue 25/8

1:45 p.m.-11:52 p.m.

1 stop10h 07m

C$ 501

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Fri 14/8

7:00 a.m.-5:28 p.m.

1 stop10h 28m

Washington, D.C. Reagan-National

Mon 17/8

8:00 a.m.-5:46 p.m.

1 stop9h 46m

C$ 501

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Thu 1/10

7:00 a.m.-4:17 p.m.

1 stop9h 17m

Washington, D.C. Dulles Intl

Wed 7/10

6:05 a.m.-6:58 p.m.

2 stops12h 53m

C$ 503

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Fri 28/8

6:00 a.m.-4:58 p.m.

1 stop10h 58m

Washington, D.C. Reagan-National

Mon 31/8

4:30 p.m.-10:06 p.m.

1 stop5h 36m

C$ 503

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

12:47 p.m.-12:34 a.m.

2 stops11h 47m

Washington, D.C. Dulles Intl

Wed 26/8

11:10 a.m.-11:52 p.m.

2 stops12h 42m

C$ 503

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 57 resultsSorted by cheapest first
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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.

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$ 442). Flying from Montreal to Washington, D.C. in July is currently the most expensive (average of C$ 563). 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 30 July 2026.

It’s typically best to fly out from Montreal to Washington, D.C. in the afternoon. Doing so could potentially save you 26% on the flight price compared to flying in the evening, which is usually more expensive.

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 30 July 2026.

The most flights from YMQ to WAS are scheduled on a Monday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

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

Airfare is below average for this route at the moment.
Montreal to Washington, D.C. flights typically cost between C$ 455 and C$ 665 in August.
The cheapest round-trip price found within the last 5 days was C$ 410 on Porter Airlines (28 Aug-1 Sep).

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 97% 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$ 373.

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 12m.

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

The best time to book flights from Montreal to Washington, D.C. is 34 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 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 25 July 2026.

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

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 30 July 2026.
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
449 reviews
Check prices

Food

7.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
449 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Food

7.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,046 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Food

7.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,407 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Food

7.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

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$ 452, United Airlines can have you in Washington, D.C. from Montreal in 4h 15m. Airlines will cover a distance of 785 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$ 306, 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 Delta - these airlines can fly you to your destination from C$ 338 and C$ 339, respectively. You may be able to fly from Montreal to Washington, D.C. for 36% 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$ 191), Air Canada (C$ 225), and United Airlines (C$ 242).

  • 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 (94%) or Copa Airlines (84%) 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$ 604, our data shows the cheapest flight currently is C$ 253. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl), you can expect to pay C$ 401 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$ 442). Flying from Montreal to Washington, D.C. in July is currently the most expensive (average of C$ 563). 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
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Reston
Herndon
Ellicott City
Arlington
Fredericksburg
Alexandria
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 30 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 306AverageC$ 413FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 338AverageC$ 503FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 339AverageC$ 598FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 362AverageC$ 662FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 602AverageC$ 959FlexibilityNo 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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