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Cheap flights from Montreal to Washington, D.C. from C$ 239

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — WAS
4 Jul — 11 Jul1
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 83 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 4 June 2026.

Mon 10/810:35 a.m.
YUL
-
IAD
1 stop4h 35m
Porter Airlines
Mon 17/811:25 a.m.
IAD
-
YUL
1 stop6h 45m
Porter Airlines
Deal found 31/5C$ 394
Thu 30/710:35 a.m.
YUL
-
IAD
1 stop4h 41m
Porter Airlines
Tue 4/83:50 p.m.
IAD
-
YUL
1 stop6h 20m
Porter Airlines
Deal found 31/5C$ 395
Fri 26/66:30 a.m.
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Sun 28/64:00 p.m.
IAD
-
YUL
1 stop4h 10m
Porter Airlines
Deal found 2/6C$ 397
Thu 25/610:35 a.m.
YUL
-
IAD
1 stop4h 41m
Porter Airlines
Tue 30/64:00 p.m.
IAD
-
YUL
1 stop4h 10m
Porter Airlines
Deal found 30/5C$ 399
Wed 8/76:30 a.m.
YUL
-
IAD
1 stop4h 16m
Porter Airlines
Wed 15/74:00 p.m.
IAD
-
YUL
1 stop6h 10m
Porter Airlines
Deal found 2/6C$ 401
Fri 16/1010:30 a.m.
YUL
-
IAD
1 stop5h 42m
Air Canada
Sun 18/105:15 p.m.
IAD
-
YUL
1 stop4h 30m
Air Canada
Deal found 3/6C$ 402
Wed 15/78:40 a.m.
YUL
-
DCA
1 stop3h 20m
Air Canada
Mon 20/712:40 p.m.
DCA
-
YUL
1 stop3h 20m
Air Canada
Deal found 4/6C$ 402
Tue 21/75:05 p.m.
YUL
-
IAD
Nonstop1h 56m
Air Canada
Tue 28/79:45 a.m.
IAD
-
YUL
Nonstop1h 42m
Air Canada
Deal found 3/6C$ 404
Wed 17/61:50 p.m.
YUL
-
DCA
Nonstop1h 49m
Air Canada
Sun 21/66:00 a.m.
DCA
-
YUL
Nonstop1h 47m
Air Canada
Deal found 3/6C$ 404
Sat 1/81:05 p.m.
YUL
-
IAD
Nonstop1h 56m
Air Canada
Mon 10/83:45 p.m.
IAD
-
YUL
Nonstop1h 42m
Air Canada
Deal found 2/6C$ 405
Fri 19/68:30 a.m.
YUL
-
DCA
Nonstop1h 48m
Air Canada
Sun 21/66:00 a.m.
DCA
-
YUL
Nonstop1h 47m
Air Canada
Deal found 2/6C$ 405
Wed 24/61:05 p.m.
YUL
-
IAD
Nonstop1h 56m
Air Canada
Sat 4/79:45 a.m.
IAD
-
YUL
Nonstop1h 42m
Air Canada
Deal found 31/5C$ 406

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 4 June 2026.

Round-trip from

C$ 394

One-way from

C$ 239

Popular in

April

Cheapest in

October

Average price

C$ 463

Good round-trip deal

C$ 464 or less

Good one-way deal

C$ 336 or less
Porter Airlines
  • Porter Airlines
  • 10/8-17/8
  • 2 total stops
  • 11h 20m total
  • Montreal to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 8/8
  • 1 total stop
  • 4h 35m total
  • Montreal to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 4 June 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

Fri 16/10

1:05 p.m.-3:00 p.m.

Nonstop1h 55m

Washington, D.C. Dulles Intl

Sun 18/10

5:15 p.m.-9:45 p.m.

1 stop4h 30m

C$ 402

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 19/6

1:05 p.m.-3:01 p.m.

Nonstop1h 56m

Washington, D.C. Dulles Intl

Tue 23/6

9:45 a.m.-11:27 a.m.

Nonstop1h 42m

C$ 415

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 19/6

7:00 a.m.-4:47 p.m.

1 stop9h 47m

Washington, D.C. Dulles Intl

Tue 23/6

6:00 a.m.-11:43 a.m.

1 stop5h 43m

C$ 452

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Fri 19/6

2:20 p.m.-4:19 p.m.

Nonstop1h 59m

Washington, D.C. Dulles Intl

Wed 24/6

10:11 p.m.-12:13 a.m.

Nonstop2h 02m

C$ 456

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 15/7

10:35 a.m.-3:16 p.m.

1 stop4h 41m

Washington, D.C. Dulles Intl

Sat 18/7

11:30 a.m.-6:10 p.m.

1 stop6h 40m

C$ 456
Quickest round-trip

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Wed 24/6

8:30 a.m.-10:18 a.m.

Nonstop1h 48m

Washington, D.C. Reagan-National

Mon 29/6

6:00 a.m.-7:47 a.m.

Nonstop1h 47m

C$ 466

MontrealWashington, D.C.

YUL - IAD

YULIAD

Montreal Pierre Elliott Trudeau Intl

Wed 15/7

1:05 p.m.-3:01 p.m.

Nonstop1h 56m

Washington, D.C. Dulles Intl

Sat 18/7

3:45 p.m.-5:27 p.m.

Nonstop1h 42m

C$ 483

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Fri 10/7

9:30 a.m.-6:43 p.m.

2 stops9h 13m

Washington, D.C. Reagan-National

Tue 14/7

1:42 p.m.-11:52 p.m.

1 stop10h 10m

C$ 491

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Fri 19/6

11:23 a.m.-9:53 p.m.

1 stop10h 30m

Washington, D.C. Reagan-National

Tue 23/6

10:00 a.m.-4:10 p.m.

1 stop6h 10m

C$ 491

MontrealWashington, D.C.

YUL - DCA

YULDCA

Montreal Pierre Elliott Trudeau Intl

Sat 27/6

6:00 a.m.-2:23 p.m.

1 stop8h 23m

Washington, D.C. Reagan-National

Tue 30/6

10:30 a.m.-5:30 p.m.

1 stop7h 00m

C$ 492

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/5

Showing 1-10 of 56 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, April is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 143). Flying from Montreal to Washington, D.C. in February is currently the most expensive (average of C$ 306). 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 4 June 2026.

It’s typically best to fly out from Montreal to Washington, D.C. in the morning. Doing so could potentially save you 27% 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 4 June 2026.

The most flights from YMQ to WAS are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 (YTZ) is the most affordable 1-stop option, with an average round-trip price of C$ 379.

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: 4h 02m.

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 14m.

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 78 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 30 May 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 4 June 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
440 reviews
Check prices

Food

7.6

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
440 reviews
Porter Airlines
8.0
Very good
440 reviews
Check prices

Food

7.6

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,779 reviews
Porter Airlines
8.0
Very good
440 reviews
Check prices

Food

7.6

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,127 reviews
Porter Airlines
8.0
Very good
440 reviews
Check prices

Food

7.6

Boarding

8.2

Crew

8.6

Comfort

8.0

Entertainment

6.9

Overall

8.0

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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$ 402, Air Canada can have you in Washington, D.C. from Montreal in 1h 55m. 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$ 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 Delta - these airlines can fly you to your destination from C$ 332 and C$ 334, respectively. You may be able to fly from Montreal to Washington, D.C. for 33% 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$ 193), Air Canada (C$ 222), and United Airlines (C$ 239).

  • 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 (95%) or Copa Airlines (92%) 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$ 616, our data shows the cheapest flight currently is C$ 275. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Washington, D.C. Dulles Intl), you can expect to pay C$ 372 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, April is the cheapest month in which you can book a flight from Montreal to Washington, D.C. (average of C$ 143). Flying from Montreal to Washington, D.C. in February is currently the most expensive (average of C$ 306). 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
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Herndon
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 4 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 300AverageC$ 371FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 332AverageC$ 514FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 334AverageC$ 589FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 356AverageC$ 632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 593AverageC$ 806FlexibilityNo 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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