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Cheap flights from Montreal to Washington from C$ 279

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SEA
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Washington

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to Washington
Explore the most affordable flight options available from Montreal to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 June 2026.

Fri 11/96:00 p.m.
YUL
-
SEA
1 stop7h 42m
Air Canada
Tue 15/98:00 a.m.
SEA
-
YUL
1 stop7h 52m
Air Canada
Deal found 8/6C$ 447
Fri 18/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 27/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 9/6C$ 471
Thu 16/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 19/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 9/6C$ 472
Tue 14/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Tue 28/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 9/6C$ 474
Fri 11/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Tue 15/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 8/6C$ 478
Thu 1/106:00 p.m.
YUL
-
SEA
1 stop7h 42m
Air Canada
Mon 5/108:00 a.m.
SEA
-
YUL
1 stop8h 51m
Air Canada
Deal found 7/6C$ 496
Sun 6/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Mon 14/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 7/6C$ 500
Wed 22/77:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Tue 4/82:30 p.m.
PDX
-
YUL
2 stops30h 55m
WestJet
Deal found 9/6C$ 500
Tue 14/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Thu 23/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 7/6C$ 506
Mon 17/812:44 p.m.
YUL
-
PDX
1 stop12h 00m
Delta
Mon 31/810:55 p.m.
PDX
-
YUL
1 stop11h 46m
Delta
Deal found 10/6C$ 516
Wed 19/86:45 a.m.
YUL
-
PDX
2 stops10h 05m
WestJet
Wed 26/82:30 p.m.
PDX
-
YUL
1 stop23h 00m
WestJet
Deal found 10/6C$ 531
Sat 24/1012:45 p.m.
YUL
-
PDX
1 stop12h 41m
Delta
Tue 27/1010:55 p.m.
PDX
-
YUL
1 stop10h 20m
Delta
Deal found 7/6C$ 532

Find flight deals from Montreal to Washington

Keep the following information in mind while searching for Montreal to Washington flight deals. Data was last updated 10 June 2026.

Round-trip from

C$ 447

One-way from

C$ 279

Popular in

April

Cheapest in

August

Average price

C$ 804
Air Canada
  • Air Canada
  • 11/9-15/9
  • 2 total stops
  • 15h 34m total
  • Montreal to Washington
Search Deals
WestJet
  • WestJet
  • 18/9
  • 2 total stops
  • 15h 00m total
  • Montreal to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to Washington 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 10 June 2026.
Use the filters below to find and compare flights from Montreal to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

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

1 stop11h 23m

Seattle/Tacoma Intl

Sun 1/11

1:45 p.m.-11:37 p.m.

1 stop6h 52m

C$ 532

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

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

1 stop11h 23m

Seattle/Tacoma Intl

Tue 3/11

1:45 p.m.-11:37 p.m.

1 stop6h 52m

C$ 532

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 26/10

7:00 a.m.-4:35 p.m.

1 stop12h 35m

Seattle/Tacoma Intl

Tue 3/11

11:45 a.m.-11:10 p.m.

1 stop8h 25m

C$ 532

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Sat 24/10

12:45 p.m.-10:26 p.m.

1 stop12h 41m

Portland

Tue 27/10

10:55 p.m.-12:15 p.m.

1 stop10h 20m

C$ 532

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 13/9

8:20 a.m.-9:57 p.m.

1 stop16h 37m

Seattle/Tacoma Intl

Tue 15/9

7:00 a.m.-7:01 p.m.

1 stop9h 01m

C$ 535

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 13/9

8:10 a.m.-11:26 p.m.

1 stop18h 16m

Seattle/Tacoma Intl

Wed 16/9

11:00 p.m.-10:40 a.m.

1 stop8h 40m

C$ 535

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 14/9

8:20 a.m.-9:51 p.m.

1 stop16h 31m

Seattle/Tacoma Intl

Tue 15/9

5:00 a.m.-3:29 p.m.

1 stop7h 29m

C$ 535

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

12:44 p.m.-11:57 p.m.

1 stop14h 13m

Seattle/Tacoma Intl

Fri 28/8

8:59 a.m.-11:40 p.m.

1 stop11h 41m

C$ 535

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

12:44 p.m.-9:44 p.m.

1 stop12h 00m

Portland

Wed 26/8

1:30 p.m.-11:40 p.m.

1 stop7h 10m

C$ 544

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 28/8

12:47 p.m.-10:05 p.m.

1 stop12h 18m

Seattle/Tacoma Intl

Mon 31/8

9:53 a.m.-11:30 p.m.

1 stop10h 37m

C$ 545

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 55 resultsSorted by cheapest first
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6

Best time to book a flight from Montreal to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington 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

What is the cheapest month to book a flight from Montreal to State of Washington?

Currently, June is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 231). Flying from Montreal to State of Washington in February is currently the most expensive (average of C$ 449). 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.

How much does it cost to fly round-trip from Montreal to State of Washington?

How far ahead should I book a flight from Montreal to State of Washington?

The best time to book flights from Montreal to State of Washington is 45 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.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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. Reviews last updated 10 June 2026.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada from Montreal to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,808 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,808 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
WestJet
7.2
Good
3,356 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,154 reviews
United Airlines
7.4
Good
9,808 reviews
Check prices

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from Montreal to Washington. 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 State of Washington?

    Departing from Montreal to State of Washington will take you 11h 23m. Montreal and State of Washington are separated by a distance of 3663 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Montreal to State of Washington?

    When deciding which route to take from Montreal to State of Washington consider Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl, Montreal Pierre Elliott Trudeau Intl - Portland or Montreal Pierre Elliott Trudeau Intl - Spokane as they are the most popular.

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

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

  • How can I find direct flights from Montreal to Washington?

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

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

    Yes. Cheapflights offers flight deals from Montreal to Washington 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 State of Washington?

    Currently, June is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 231). Flying from Montreal to State of Washington in February is currently the most expensive (average of C$ 449). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Montreal to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Montreal to Washington

Discover the top 4 airlines that operate flights from Montreal to Washington. 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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 283AverageC$ 671FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 412AverageC$ 524FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 501AverageC$ 940FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 530AverageC$ 704FlexibilityNo cancel feeOn-time67%
Search Air Canada 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?

Cheapflights makes it easy to find Montreal to Washington flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Washington?

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 from Montreal.

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

Need flexible booking options for your flight to Washington 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 Washington 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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