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Cheap flights from Seattle to Montreal from C$ 326

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.
Air Canada Logo
3:15 p.m. - 7:10 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 55m2 stops Vancouver Intl Calgary
Air Canada Logo
9:10 a.m. - 8:59 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 49m1 stop Toronto Pearson Intl
C$ 663Air Canada
Wed, 16 Dec - Thu, 17 Dec
Air Canada Logo
3:15 p.m. - 9:25 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
15h 10m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
1:05 p.m. - 10:07 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 02m2 stops Edmonton Vancouver Intl
C$ 671Air Canada
Wed, 16 Dec - Thu, 17 Dec
WestJet Logo
2:20 p.m. - 2:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
21h 30m1 stop Calgary
WestJet Logo
4:15 p.m. - 1:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
24h 25m1 stop Calgary
C$ 739WestJet
Sat, 5 Dec - Wed, 9 Dec
WestJet Logo
2:30 p.m. - 2:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
21h 20m1 stop Calgary
WestJet Logo
8:00 p.m. - 1:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
20h 40m2 stops Toronto Pearson Intl Calgary
C$ 750WestJet
Wed, 9 Dec - Sat, 12 Dec
WestJet Logo
2:20 p.m. - 2:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
21h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 1:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
33h 55m2 stops Toronto Pearson Intl Calgary
C$ 756WestJet
Sat, 5 Dec - Sat, 12 Dec
WestJet Logo
2:20 p.m. - 2:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
21h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 1:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
33h 55m2 stops Toronto Pearson Intl Calgary
C$ 757WestJet
Sat, 5 Dec - Wed, 9 Dec
American Airlines Logo
9:15 a.m. - 10:48 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 33m1 stop Philadelphia
American Airlines Logo
2:24 p.m. - 11:09 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 45m1 stop Charlotte Douglas
C$ 767American Airlines
Fri, 4 Dec - Thu, 10 Dec
WestJet Logo
2:20 p.m. - 2:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
21h 30m1 stop Calgary
WestJet Logo
8:00 p.m. - 1:40 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
20h 40m2 stops Toronto Pearson Intl Calgary
C$ 771WestJet
Sat, 5 Dec - Sat, 12 Dec
American Airlines Logo
6:20 a.m. - 10:48 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
13h 28m2 stops Chicago O'Hare Intl Philadelphia
American Airlines Logo
4:01 p.m. - 10:38 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
9h 37m1 stop Philadelphia
C$ 774American Airlines
Fri, 11 Dec - Sat, 12 Dec
American Airlines Logo
11:39 p.m. - 11:28 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
4:01 p.m. - 10:38 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
9h 37m1 stop Philadelphia
C$ 776American Airlines
Sat, 5 Dec - Sat, 12 Dec

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Air Canada flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best Air Canada deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
Air Canada
16 Dec
SEA3:15 p.m.Seattle/Tacoma Intl
12h 55m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
17 Dec
YUL9:10 a.m.Montreal Pierre Elliott Trudeau Intl
14h 49m
1 stop
SEA8:59 p.m.Seattle/Tacoma Intl
C$ 662
Air Canada
16 Dec
SEA3:15 p.m.Seattle/Tacoma Intl
15h 10m
2 stops
YUL9:25 a.m.Montreal Pierre Elliott Trudeau Intl
17 Dec
YUL1:05 p.m.Montreal Pierre Elliott Trudeau Intl
12h 02m
2 stops
SEA10:07 p.m.Seattle/Tacoma Intl
C$ 671
Air Canada
6 Dec
SEA3:15 p.m.Seattle/Tacoma Intl
12h 55m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
12 Dec
YUL1:05 p.m.Montreal Pierre Elliott Trudeau Intl
12h 02m
2 stops
SEA10:07 p.m.Seattle/Tacoma Intl
C$ 831

WestJet flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best WestJet deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
WestJet
9 Dec
SEA2:30 p.m.Seattle/Tacoma Intl
21h 20m
1 stop
YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl
12 Dec
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
20h 40m
2 stops
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 750
WestJet
5 Dec
SEA2:20 p.m.Seattle/Tacoma Intl
21h 30m
1 stop
YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl
12 Dec
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
33h 55m
2 stops
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 756
WestJet
5 Dec
SEA2:20 p.m.Seattle/Tacoma Intl
21h 30m
1 stop
YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl
12 Dec
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
20h 40m
2 stops
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 771

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

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Route

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Price

Cheapest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Wed 16/12

3:15 p.m.-7:10 a.m.

2 stops12h 55m

Montreal Pierre Elliott Trudeau Intl

Thu 17/12

9:10 a.m.-8:59 p.m.

1 stop14h 49m

C$ 662

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Wed 16/12

3:15 p.m.-9:25 a.m.

2 stops15h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 17/12

1:05 p.m.-10:07 p.m.

2 stops12h 02m

C$ 671

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 5/12

2:20 p.m.-2:50 p.m.

1 stop21h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

4:15 p.m.-1:40 p.m.

1 stop24h 25m

C$ 739

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Wed 9/12

2:30 p.m.-2:50 p.m.

1 stop21h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

8:00 p.m.-1:40 p.m.

2 stops20h 40m

C$ 750

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 5/12

2:20 p.m.-2:50 p.m.

1 stop21h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

6:45 a.m.-1:40 p.m.

2 stops33h 55m

C$ 756

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 5/12

2:20 p.m.-2:50 p.m.

1 stop21h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 9/12

6:45 a.m.-1:40 p.m.

2 stops33h 55m

C$ 757

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Fri 4/12

9:15 a.m.-10:48 p.m.

1 stop10h 33m

Montreal Pierre Elliott Trudeau Intl

Thu 10/12

2:24 p.m.-11:09 p.m.

1 stop11h 45m

C$ 767

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 5/12

2:20 p.m.-2:50 p.m.

1 stop21h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

8:00 p.m.-1:40 p.m.

2 stops20h 40m

C$ 771

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Fri 11/12

6:20 a.m.-10:48 p.m.

2 stops13h 28m

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

4:01 p.m.-10:38 p.m.

1 stop9h 37m

C$ 774
Quickest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 5/12

11:39 p.m.-11:28 a.m.

1 stop8h 49m

Montreal Pierre Elliott Trudeau Intl

Sat 12/12

4:01 p.m.-10:38 p.m.

1 stop9h 37m

C$ 776

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 Pierre Elliott Trudeau Intl Airport

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 Pierre Elliott Trudeau Intl Airport?

Prices are currently typical for flights on this route.

Typical prices usually range from C$ 405 to C$ 1,309.
The lowest price recently found on this route was C$ 662.

What is the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The month of July is, on average, the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from Seattle, with most prices found around C$ 751. The month of August is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around C$ 843.

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

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

How far in advance should I book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

You are more likely to see cheaper flights to Montreal Pierre Elliott Trudeau Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal Pierre Elliott Trudeau Intl Airport for around C$ 994 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal Pierre Elliott Trudeau Intl Airport from Seattle for as low as C$ 387 on momondo.

What cabin class options are available on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

There is only 1 cabin class available to choose from on Seattle to Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport flights?

You could potentially save up to 33% on your flight if you consider stops on a Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight.

How have Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight prices changed over time?

As of November 2026, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 41% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

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

Cheap Seattle to Montreal Pierre Elliott Trudeau Intl Airport (SEA to YUL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Best price found

C$ 326

Fastest flight time

6h 40m

Direct flights

None
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Seattle in the past 72 hours is C$ 326. The best round-trip flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is C$ 662.
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 6h 40m
There are no direct flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. There are no popular flight routes from Seattle to Montreal Pierre Elliott Trudeau Intl Airport.
Search flight deals

Frequently asked questions about flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

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

    A flight from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl will travel around 3660.5 km. Flights usually cover this in 6h 40m, 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 Pierre Elliott Trudeau Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport are updated daily.

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

    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 Seattle/Tacoma Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport.

  • What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

    The travel and health documents required for your trip to Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport. 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 Pierre Elliott Trudeau Intl Airport?

Travelling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Trois-Rivières
Brossard
Dorval
Cornwall
Sherbrooke
Longueuil
Saint-Sauveur
Montebello
Boucherville
Drummondville
Magog
Bromont
North Hatley
Saint-Jean-sur-Richelieu
Waterloo
Sutton

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Montreal for you.

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

Yes. momondo allows you to filter the results for Seattle to Montreal flights to just show those with flexible booking policies.

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

Once you have performed a search for Seattle to Montreal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Seattle to Montreal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Montreal and let you know when they change.

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