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Cheap flights from Seattle to Montreal from C$ 176

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
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
C$ 422WestJet
Tue, 20 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
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
C$ 433WestJet
Fri, 16 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
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
C$ 439WestJet
Fri, 16 Oct - Wed, 21 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
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
C$ 442WestJet
Tue, 20 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
8:00 p.m. - 9:40 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
16h 40m1 stop Calgary
C$ 443WestJet
Sat, 17 Oct - Tue, 20 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
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
C$ 445WestJet
Wed, 21 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
7:15 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 30m1 stop Calgary
C$ 450WestJet
Fri, 16 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
8:00 p.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
25h 45m1 stop Calgary
C$ 452WestJet
Tue, 20 Oct - Fri, 23 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
5:30 p.m. - 9:40 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
19h 10m1 stop Calgary
C$ 453WestJet
Tue, 6 Oct - Wed, 7 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
8:00 p.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
25h 45m1 stop Calgary
C$ 459WestJet
Tue, 20 Oct - Fri, 23 Oct

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WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
20 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
23 Oct
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 422
WestJet
16 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
23 Oct
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 433
WestJet
16 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
21 Oct
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 439

American Airlines flights from Seattle to Montreal

Our best American Airlines deals on Seattle to Montreal flight tickets
American Airlines
3 Oct
SEA6:18 a.m.Seattle/Tacoma Intl
12h 24m
2 stops
YUL9:42 p.m.Montreal Pierre Elliott Trudeau Intl
6 Oct
YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl
9h 44m
1 stop
SEA10:59 p.m.Seattle/Tacoma Intl
C$ 796
American Airlines
3 Oct
SEA6:18 a.m.Seattle/Tacoma Intl
12h 24m
2 stops
YUL9:42 p.m.Montreal Pierre Elliott Trudeau Intl
6 Oct
YUL7:40 a.m.Montreal Pierre Elliott Trudeau Intl
11h 03m
2 stops
SEA3:43 p.m.Seattle/Tacoma Intl
C$ 803
American Airlines
2 Oct
SEA11:57 p.m.Seattle/Tacoma Intl
12h 32m
2 stops
YUL3:29 p.m.Montreal Pierre Elliott Trudeau Intl
6 Oct
YUL7:40 a.m.Montreal Pierre Elliott Trudeau Intl
11h 03m
2 stops
SEA3:43 p.m.Seattle/Tacoma Intl
C$ 836

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 20/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

2 stops15h 00m

C$ 422

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Fri 16/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

2 stops15h 00m

C$ 433

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Fri 16/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

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

2 stops15h 00m

C$ 439

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 20/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

2 stops15h 00m

C$ 442

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 17/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 20/10

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

1 stop16h 40m

C$ 443

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Wed 21/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

2 stops15h 00m

C$ 445
Quickest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Fri 16/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

7:15 a.m.-6:45 p.m.

1 stop14h 30m

C$ 450

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 20/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

8:00 p.m.-6:45 p.m.

1 stop25h 45m

C$ 452

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 6/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 7/10

5:30 p.m.-9:40 a.m.

1 stop19h 10m

C$ 453

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 20/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

8:00 p.m.-6:45 p.m.

1 stop25h 45m

C$ 459

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Montreal from

How to get the cheapest flight ticket from Seattle to Montreal

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

What is the typical price of a round-trip flight between Seattle and Montreal?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 619 to C$ 981.
The lowest price recently found on this route was C$ 422.

What is the cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from Seattle is in March. Flight prices, which tend to average around C$ 653, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Montreal from Seattle during August instead. Flights to Montreal in August, while not as cheap as those in March, still average around C$ 810.

What is the cheapest Seattle/Tacoma Intl to Montreal flight route?

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

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

You are more likely to see cheaper flights to Montreal from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around C$ 991 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from Seattle for as low as C$ 383 on momondo.

What cabin class options are available on Seattle to Montreal flights?

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

Can stopping save me money on Seattle to Montreal flights?

You could potentially save up to 47% on your flight if you consider stops on a Seattle to Montreal flight.

How have Seattle to Montreal flight prices changed over time?

As of September 2026, prices for Seattle to Montreal flights are approximately 42% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Montreal

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Montreal according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Montreal (SEA to YMQ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Montreal

Best price found

C$ 176

Fastest flight time

6h 59m

Direct flights

None
The best one-way flight to Montreal from Seattle in the past 72 hours is C$ 176. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is C$ 422.
The fastest flight from Seattle to Montreal takes 6h 59m
There are no direct flights from Seattle to Montreal. There are no popular flight routes from Seattle to Montreal.
Search flight deals

Frequently asked questions about flying from Seattle to Montreal

  • How far is Seattle/Tacoma Intl to Montreal by plane?

    The straight-line distance from Seattle/Tacoma Intl to Montreal is 3672.5 km. Flights usually cover this in 6h 59m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Montreal?

    Prices for flights from Seattle/Tacoma Intl Airport to Montreal refresh daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Montreal?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Montreal.

  • What documentation or ID do you need to fly to Montreal?

    The travel and health documents required for your trip to Montreal 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 Montreal. 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 Seattle to Montreal?

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Montreal from Seattle.

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

Flights from Seattle to Montreal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Montreal from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Montreal from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport