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Cheap flights from Montreal to Washington from C$ 280

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
22 Jul — 29 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 22 June 2026.

Thu 1/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Fri 9/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 21/6C$ 474
Sun 27/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 4/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 19/6C$ 476
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 18/6C$ 477
Sat 5/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 13/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 17/6C$ 480
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 21/6C$ 481
Thu 10/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Mon 21/910:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 21/6C$ 483
Thu 13/87:30 a.m.
YUL
-
PDX
1 stop14h 41m
Air Canada
Fri 21/83:30 p.m.
PDX
-
YUL
2 stops12h 40m
Air Canada
Deal found 18/6C$ 494
Wed 30/97:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Wed 7/102:30 p.m.
PDX
-
YUL
1 stop30h 15m
WestJet
Deal found 21/6C$ 505
Fri 28/87:30 a.m.
YUL
-
PDX
1 stop10h 21m
Air Canada
Tue 1/93:30 p.m.
PDX
-
YUL
2 stops12h 40m
Air Canada
Deal found 21/6C$ 510
Wed 29/76:45 a.m.
YUL
-
PDX
2 stops10h 05m
WestJet
Wed 12/82:30 p.m.
PDX
-
YUL
2 stops30h 55m
WestJet
Deal found 17/6C$ 515
Fri 28/83:25 p.m.
YUL
-
PDX
1 stop9h 38m
United Airlines
Tue 1/97:16 a.m.
PDX
-
YUL
1 stop11h 10m
United Airlines
Deal found 19/6C$ 517
Wed 22/75:30 p.m.
YUL
-
PDX
1 stop10h 20m
American Airlines
Tue 4/811:15 p.m.
PDX
-
YUL
1 stop14h 35m
American Airlines
Deal found 21/6C$ 519

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 22 June 2026.

Round-trip from

C$ 474

One-way from

C$ 280

Popular in

April

Cheapest in

August

Average price

C$ 814
WestJet
  • WestJet
  • 1/10-9/10
  • 3 total stops
  • 23h 30m 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. 12% potential increase in price (C$ 157 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 77 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 22 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

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

6:45 a.m.-6:45 p.m.

2 stops15h 00m

Seattle/Tacoma Intl

Sun 27/9

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 485

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

7:15 a.m.-1:50 p.m.

1 stop9h 35m

Portland

Wed 7/10

2:30 p.m.-12:25 a.m.

2 stops30h 55m

C$ 511

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Fri 28/8

3:25 p.m.-10:03 p.m.

1 stop9h 38m

Portland

Tue 1/9

7:16 a.m.-9:26 p.m.

1 stop11h 10m

C$ 517

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Thu 13/8

9:45 a.m.-10:52 p.m.

1 stop16h 07m

Portland

Fri 21/8

3:30 p.m.-7:10 a.m.

2 stops12h 40m

C$ 518

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 12/8

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

1 stop12h 18m

Seattle/Tacoma Intl

Wed 19/8

11:56 a.m.-11:52 p.m.

1 stop8h 56m

C$ 532
Quickest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

12:45 p.m.-6:38 p.m.

1 stop8h 53m

Seattle/Tacoma Intl

Sat 31/10

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

1 stop6h 52m

C$ 532

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

6:35 p.m.-1:15 a.m.

1 stop9h 40m

Seattle/Tacoma Intl

Tue 3/11

5:00 a.m.-9:42 p.m.

2 stops13h 42m

C$ 536

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

5:45 p.m.-6:45 p.m.

2 stops28h 00m

Seattle/Tacoma Intl

Sun 27/9

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 541

MontrealPortland

YUL - PDX

YULPDX

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

6:35 p.m.-12:30 a.m.

1 stop8h 55m

Portland

Mon 7/9

3:30 p.m.-7:10 a.m.

2 stops12h 40m

C$ 542

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 7/10

9:15 a.m.-9:15 p.m.

2 stops15h 00m

Seattle/Tacoma Intl

Tue 27/10

5:07 a.m.-7:38 p.m.

2 stops11h 31m

C$ 542

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/6

Showing 1-10 of 55 resultsSorted by cheapest first
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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, March is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 283). Flying from Montreal to State of Washington in February is currently the most expensive (average of C$ 456). 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 22 June 2026.
Check out reviews from past customers who have flown with Delta,United Airlines, andWestJet 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.
Delta
7.8
Good
8,424 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.8

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.8
Good
8,424 reviews
Delta
7.8
Good
8,424 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.8

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
United Airlines
7.4
Good
9,872 reviews
Delta
7.8
Good
8,424 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.8

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
WestJet
7.2
Good
3,379 reviews
Delta
7.8
Good
8,424 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.8

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Air Canada
7.1
Good
11,242 reviews
Delta
7.8
Good
8,424 reviews
Check prices

Entertainment

7.8

Boarding

8.1

Food

7.2

Crew

8.5

Overall

7.8

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

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 9h 38m. Montreal and State of Washington are separated by a distance of 3742 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, March is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 283). Flying from Montreal to State of Washington in February is currently the most expensive (average of C$ 456). 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 22 June 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 288AverageC$ 682FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 419AverageC$ 523FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 509AverageC$ 885FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 567AverageC$ 725FlexibilityNo 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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