Cheap flights from Montreal to Washington from C$ 351

YMQ — SEA
12 Dec — 19 Dec1
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

Thu 3/121:05 p.m. -
2 stops11h 52m
Wed 9/123:15 p.m. -
2 stops12h 55m
Deal found 9/11C$ 610
Thu 10/126:00 a.m. -
1 stop12h 03m
Wed 16/126:00 a.m. -
1 stop6h 59m
Deal found 8/11C$ 621
Fri 11/1212:08 p.m. -
1 stop11h 23m
Mon 14/1211:39 p.m. -
2 stops9h 45m
Deal found 9/11C$ 641
Sun 6/126:00 a.m. -
1 stop12h 03m
Fri 11/1210:40 p.m. -
1 stop12h 07m
Deal found 9/11C$ 643
Thu 10/127:30 a.m. -
1 stop10h 07m
Wed 16/123:15 p.m. -
2 stops12h 55m
Deal found 9/11C$ 654
Sun 22/117:30 a.m. -
1 stop10h 07m
Tue 24/1110:10 a.m. -
2 stops10h 24m
Deal found 8/11C$ 656
Mon 23/117:00 a.m. -
2 stops14h 33m
Thu 26/118:09 a.m. -
1 stop8h 39m
Deal found 9/11C$ 664
Sun 22/117:30 a.m. -
1 stop10h 07m
Sun 22/117:05 p.m. -
2 stops12h 20m
Deal found 8/11C$ 667
Fri 4/126:00 a.m. -
2 stops13h 57m
Tue 8/121:55 p.m. -
1 stop6h 46m
Deal found 7/11C$ 767
Wed 2/127:10 a.m. -
2 stops12h 47m
Sun 6/127:00 a.m. -
2 stops13h 33m
Deal found 10/11C$ 768
Fri 13/114:45 p.m. -
2 stops20h 53m
Sun 15/115:00 a.m. -
2 stops13h 17m
Deal found 9/11C$ 1,049

Find flight deals from Montreal to Washington

Round-trip from

C$ 610

One-way from

C$ 351

Popular in

January

Cheapest in

October

Average price

C$ 748

Good round-trip deal

C$ 691 or less
Air Canada
  • Air Canada
  • 3/12-9/12
  • 4 total stops
  • 24h 47m total
  • Montreal to Washington
Delta
  • Delta
  • 13/12-31/12
  • 1 total stop
  • 8h 10m total
  • Montreal to Washington
Highest demand for flights based on searches. 14% potential increase in price (C$ 168 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease (C$ 43 potential savings vs. average RT price).
Average for round-trip flights in November 2026
Price to beat on a round-trip flight from Montreal (YMQ) to Washington.

Cheapflights Fare Finder

 
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 Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 26/1

12:49 p.m.-10:02 p.m.

1 stop12h 13m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 351

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 23/4

12:45 p.m.-10:05 p.m.

1 stop12h 20m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 351

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 7/3

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

1 stop11h 23m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 351

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

6:00 a.m.-3:03 p.m.

1 stop12h 03m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 352

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 14/12

7:00 a.m.-2:38 p.m.

1 stop10h 38m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 354
Quickest round-trip

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 11/12

7:30 a.m.-2:37 p.m.

1 stop10h 07m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 365

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 11/12

6:00 a.m.-11:44 p.m.

2 stops20h 44m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 372

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 23/11

7:00 a.m.-9:39 p.m.

1 stop17h 39m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 373

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

6:00 a.m.-9:21 p.m.

2 stops18h 21m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 373

MontrealSpokane

YUL Montreal Pierre Elliott Trudeau Intl - GEG Spokane

YULGEG

Montreal Pierre Elliott Trudeau Intl

Fri 25/12

4:00 p.m.-12:19 a.m.

1 stop11h 19m

Spokane

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 446

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 34 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

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, October is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 623). Flying from Montreal to State of Washington in June is currently the most expensive (average of C$ 850). 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?

Airfare is below average for this route at the moment.
Montreal to State of Washington flights typically cost between C$ 671 and C$ 1,036 in December.
The cheapest round-trip price found within the last 5 days was C$ 610 on Air Canada (3 Dec-9 Dec).

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 46 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

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.

Crew

8.5

Boarding

8.1

Overall

7.8

Entertainment

7.8

Food

7.2

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 ,

Crew

8.5

Boarding

8.1

Overall

7.8

Entertainment

7.8

Food

7.2

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 ,

Crew

8.5

Boarding

8.1

Overall

7.8

Entertainment

7.8

Food

7.2

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 ,

Crew

8.5

Boarding

8.1

Overall

7.8

Entertainment

7.8

Food

7.2

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 ,

Crew

8.5

Boarding

8.1

Overall

7.8

Entertainment

7.8

Food

7.2

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

  • How long is the flight from Montreal to State of Washington?

    Departing from Montreal to State of Washington will take you 8h 30m. Montreal and State of Washington are separated by a distance of 3310 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?

  • What are the cheapest flights from Montreal to State of Washington?

    The cheapest flight price from Montreal to State of Washington is C$ 684. On average you can expect to pay C$ 735. The most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), can usually be booked for C$ 619.

  • 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, October is the cheapest month in which you can book a flight from Montreal to State of Washington (average of C$ 623). Flying from Montreal to State of Washington in June is currently the most expensive (average of C$ 850). 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

Alternative routes for Montreal to Washington

Top 5 airlines flying from Montreal to Washington

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 339AverageC$ 643FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 422AverageC$ 542FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 485AverageC$ 794FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 512AverageC$ 888FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 517AverageC$ 755FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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.

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