What is the cheapest airline that flies from Montreal to Washington?

WestJet, Delta, and American Airlines are the most popular carriers operating from Montreal to Washington

Which airlines fly to State of Washington?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to State of Washington from Montreal according to our data. Air Canada is the first choice among our users, with 60% of people opting to fly with this airline when travelling to State of Washington. Keep in mind that there are 4 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Montreal to Washington?

Prices for flights from Montreal to Washington are refreshed on a daily basis.

How many operators does momondo search for flights from Montreal to Washington?

There are 4 operators available for flights from Montreal to Washington as of September 2026.

How old do you have to be to fly from Montreal to Washington?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 278 Cheap Flights from Montreal to Washington in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal to Washington

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 p.m. - 9:40 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

16h 40m1 stop Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 435WestJet

Fri, 16 Oct - Thu, 22 Oct

7:20 p.m. - 6:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

26h 25m2 stops Toronto Pearson Intl Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 449WestJet

Sat, 10 Oct - Sat, 17 Oct

5:34 p.m. - 12:36 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

10h 02m1 stop Chicago O'Hare Intl

11:59 p.m. - 11:44 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 45m1 stop Chicago O'Hare Intl

C$ 484American Airlines

Sat, 10 Oct - Sat, 17 Oct

7:33 a.m. - 3:44 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 11m2 stops Philadelphia Chicago O'Hare Intl

11:34 p.m. - 3:28 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 54m2 stops Chicago O'Hare Intl Philadelphia

C$ 501American Airlines

Tue, 3 Nov - Fri, 6 Nov

12:45 p.m. - 6:38 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

8h 53m1 stop Detroit Metropolitan Wayne County

9:20 p.m. - 1:39 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

13h 19m1 stop Atlanta Hartsfield-Jackson

C$ 513Delta

Fri, 8 Jan - Sat, 16 Jan

7:00 a.m. - 4:58 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 58m1 stop Minneapolis St Paul

8:25 a.m. - 11:22 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 57m1 stop Minneapolis St Paul

C$ 513Delta

Mon, 26 Oct - Sun, 1 Nov

7:30 a.m. - 2:22 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 52m1 stop Vancouver Intl

8:40 a.m. - 11:18 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 38m2 stops Vancouver Intl Calgary

C$ 637Air Canada

Thu, 22 Oct - Wed, 28 Oct

9:45 a.m. - 8:37 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

13h 52m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

3:49 p.m. - 3:16 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

20h 27m2 stops Denver Intl Washington, D.C. Dulles Intl

C$ 651United Airlines

Tue, 20 Oct - Tue, 27 Oct

2:20 p.m. - 8:37 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 17m1 stop Washington, D.C. Dulles Intl

7:25 p.m. - 8:16 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 51m1 stop San Francisco

C$ 669United Airlines

Sat, 10 Oct - Wed, 14 Oct

1:10 p.m. - 8:59 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

10h 49m1 stop Toronto Pearson Intl

8:40 a.m. - 7:35 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

7h 55m1 stop Vancouver Intl

C$ 674Air Canada

Wed, 23 Dec - Wed, 30 Dec

Cheap last-minute flights

Enter your travel dates to find the best prices.

12:48 p.m. - 10:05 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 17m1 stop Detroit Metropolitan Wayne County

6:00 a.m. - 4:15 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

7h 15m1 stop Detroit Metropolitan Wayne County

C$ 737Delta

Tue, 29 Sep - Tue, 6 Oct

7:00 a.m. - 12:58 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

8h 58m1 stop Minneapolis St Paul

8:59 a.m. - 11:54 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 55m1 stop Atlanta Hartsfield-Jackson

C$ 737Delta

Wed, 30 Sep - Tue, 6 Oct

4:15 p.m. - 10:57 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 42m1 stop Philadelphia

11:59 p.m. - 11:44 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 45m1 stop Chicago O'Hare Intl

C$ 748American Airlines

Tue, 29 Sep - Tue, 6 Oct

4:15 p.m. - 10:57 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 42m1 stop Philadelphia

11:59 p.m. - 11:44 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 45m1 stop Chicago O'Hare Intl

C$ 754American Airlines

Tue, 29 Sep - Tue, 6 Oct

11:23 a.m. - 9:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 52m2 stops Newark Denver Intl

11:59 p.m. - 4:10 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

13h 11m2 stops Houston George Bush Intcntl Newark

C$ 767United Airlines

Tue, 29 Sep - Tue, 6 Oct

9:45 a.m. - 8:37 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

13h 52m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

8:25 a.m. - 7:45 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 20m1 stop Washington, D.C. Dulles Intl

C$ 767United Airlines

Tue, 29 Sep - Tue, 6 Oct

2:15 p.m. - 10:47 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 32m2 stops Edmonton Vancouver Intl

5:50 a.m. - 8:30 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 40m2 stops Vancouver Intl Calgary

C$ 781Air Canada

Tue, 29 Sep - Tue, 6 Oct

8:00 a.m. - 2:17 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 17m2 stops Winnipeg Vancouver Intl

5:50 a.m. - 11:43 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

14h 53m2 stops Vancouver Intl Edmonton

C$ 808Air Canada

Tue, 29 Sep - Wed, 7 Oct

6:45 a.m. - 6:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

15h 00m2 stops Toronto Pearson Intl Calgary

7:35 p.m. - 6:20 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

19h 45m2 stops Calgary Toronto Pearson Intl

C$ 980WestJet

Mon, 28 Sep - Wed, 14 Oct

6:45 a.m. - 6:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

15h 00m2 stops Toronto Pearson Intl Calgary

10:30 a.m. - 12:25 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

10h 55m2 stops Calgary Toronto Pearson Intl

C$ 1,031WestJet

Sun, 27 Sep - Sun, 11 Oct

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Delta flights from Montreal to State of Washington

Our best Delta deals on Montreal to State of Washington flight tickets

Delta

26 Oct

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

12h 58m

1 stop

SEA4:58 p.m.Seattle/Tacoma Intl

1 Nov

SEA8:25 a.m.Seattle/Tacoma Intl

11h 57m

1 stop

YUL11:22 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 513

Delta

23 Oct

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

12h 58m

1 stop

SEA4:58 p.m.Seattle/Tacoma Intl

29 Oct

SEA11:59 p.m.Seattle/Tacoma Intl

8h 39m

1 stop

YUL11:38 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 514

Delta

11 Jan

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

12h 35m

1 stop

SEA4:35 p.m.Seattle/Tacoma Intl

21 Jan

SEA1:45 p.m.Seattle/Tacoma Intl

6h 50m

1 stop

YUL11:35 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 515

American Airlines flights from Montreal to State of Washington

Our best American Airlines deals on Montreal to State of Washington flight tickets

American Airlines

3 Nov

YUL7:33 a.m.Montreal Pierre Elliott Trudeau Intl

11h 11m

2 stops

SEA3:44 p.m.Seattle/Tacoma Intl

6 Nov

SEA11:34 p.m.Seattle/Tacoma Intl

12h 54m

2 stops

YUL3:28 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 501

American Airlines

3 Nov

YUL1:04 p.m.Montreal Pierre Elliott Trudeau Intl

11h 55m

1 stop

SEA9:59 p.m.Seattle/Tacoma Intl

6 Nov

SEA11:34 p.m.Seattle/Tacoma Intl

8h 51m

1 stop

YUL11:25 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 527

American Airlines

29 Oct

YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl

10h 02m

1 stop

SEA12:36 a.m.Seattle/Tacoma Intl

10 Nov

SEA11:34 p.m.Seattle/Tacoma Intl

9h 49m

2 stops

YUL12:23 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 534

momondo 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

Fri 16/10

8:00 p.m.-9:40 a.m.

1 stop16h 40m

Seattle/Tacoma Intl

Thu 22/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 435

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

7:20 p.m.-6:45 p.m.

2 stops26h 25m

Seattle/Tacoma Intl

Sat 17/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 449

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

5:34 p.m.-12:36 a.m.

1 stop10h 02m

Seattle/Tacoma Intl

Sat 17/10

11:59 p.m.-11:44 a.m.

1 stop8h 45m

C$ 484

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

7:33 a.m.-3:44 p.m.

2 stops11h 11m

Seattle/Tacoma Intl

Fri 6/11

11:34 p.m.-3:28 p.m.

2 stops12h 54m

C$ 501

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 8/1

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

1 stop8h 53m

Seattle/Tacoma Intl

Sat 16/1

9:20 p.m.-1:39 p.m.

1 stop13h 19m

C$ 513

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 26/10

7:00 a.m.-4:58 p.m.

1 stop12h 58m

Seattle/Tacoma Intl

Sun 1/11

8:25 a.m.-11:22 p.m.

1 stop11h 57m

C$ 513

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

7:30 a.m.-2:22 p.m.

1 stop9h 52m

Seattle/Tacoma Intl

Wed 28/10

8:40 a.m.-11:18 p.m.

2 stops11h 38m

C$ 637

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 20/10

9:45 a.m.-8:37 p.m.

2 stops13h 52m

Seattle/Tacoma Intl

Tue 27/10

3:49 p.m.-3:16 p.m.

2 stops20h 27m

C$ 651

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

2:20 p.m.-8:37 p.m.

1 stop9h 17m

Seattle/Tacoma Intl

Wed 14/10

7:25 p.m.-8:16 a.m.

1 stop9h 51m

C$ 669

Quickest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 23/12

1:10 p.m.-8:59 p.m.

1 stop10h 49m

Seattle/Tacoma Intl

Wed 30/12

8:40 a.m.-7:35 p.m.

1 stop7h 55m

C$ 674

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montreal to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to State of Washington?

In general, March is the cheapest month to fly from Montreal to State of Washington. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 645. If you’re not able to fly to State of Washington in March, then April is your next best option. Flight prices from Montreal to State of Washington during April average around C$ 651.

What is the cheapest day to depart on your flight to State of Washington?

On average, the least expensive day to fly to State of Washington from Montreal is on a Friday. momondo users have found tickets for Friday departures for as low as C$ 646. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to State of Washington on Wednesday is C$ 1,320.

What is the cheapest Montreal to Washington flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl for the best Montreal - Washington flight prices

How far in advance should I book a flight from Montreal to Washington?

You are more likely to see cheaper flights to State of Washington from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around C$ 708 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Montreal for as low as C$ 429 on momondo.

What cabin class options are available on Montreal to State of Washington flights?

There is only 1 cabin class available to choose from on Montreal to State of Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Montreal to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to State of Washington

Best price found	C$ 278
Fastest flight time	8h 53m
Direct flights	None

The best one-way flight to State of Washington from Montreal in the past 72 hours is C$ 278. The best round-trip flight deal from Montreal to State of Washington found on momondo in the last 72 hours is C$ 435.

The fastest flight from Montreal to State of Washington takes 8h 53m

There are no direct flights from Montreal to State of Washington. There are no popular flight routes from Montreal to State of Washington.

Search flight deals

Frequently asked questions about flying from Montreal to Washington

When did momondo last update prices for flights from Montreal to Washington?
Prices for flights from Montreal to Washington are refreshed on a daily basis.
How many operators does momondo search for flights from Montreal to Washington?
There are 4 operators available for flights from Montreal to Washington as of September 2026.
How old do you have to be to fly from Montreal to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Montreal to State of Washington?
Based on momondo bookings for flights between Montreal and State of Washington, the leading plane model is Airbus A220-300, making up 100.00% of the total bookings.

Best airlines flying from Montreal to State of Washington

Compare and see reviews for airlines that fly from Montreal to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom C$ 287	Free Cancellation	Rating 7.8 8,600 reviews	Search Delta flights
WestJet	PriceFrom C$ 418	Free Cancellation	Rating 7.2 3,448 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 508	Free Cancellation	Rating 7.4 10,237 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 512	Free Cancellation	Rating 7.1 11,682 reviews	Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Washington?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montreal to Washington. momondo saves you time and could save you money on your trip.

Can I find flights from Montreal to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Montreal on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Montreal to Washington?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from Montreal.

I’m not ready to book a flight from Montreal to Washington right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington from Montreal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.