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Cheap flights from Seattle to Montreal from C$ 189

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Montreal departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Logo
8:40 a.m. - 2:10 p.m.SEA-YUL
26h 30m1 stop
Logo
6:45 a.m. - 4:59 p.m.YUL-SEA
13h 14m2 stops
C$ 512
Find Deal
Wed, 3 Sep - Tue, 7 Oct
Air Canada Logo
7:15 p.m. - 9:20 a.m.SEA-YUL
11h 05m2 stops
Air Canada Logo
1:15 p.m. - 6:36 p.m.YUL-SEA
8h 21m1 stop
C$ 513Air Canada
Find Deal
Thu, 11 Sep - Fri, 12 Sep
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YUL
7h 51m1 stop
WestJet Logo
7:00 a.m. - 12:59 p.m.YUL-SEA
8h 59m1 stop
C$ 516WestJet
Find Deal
Thu, 4 Sep - Wed, 10 Sep
American Airlines Logo
11:38 p.m. - 1:40 p.m.SEA-YUL
11h 02m1 stop
American Airlines Logo
3:44 p.m. - 9:19 a.m.YUL-SEA
20h 35m1 stop
C$ 517American Airlines
Find Deal
Fri, 5 Sep - Sat, 6 Sep
Logo
1:50 p.m. - 12:41 a.m.SEA-YUL
7h 51m1 stop
Logo
10:15 a.m. - 6:36 p.m.YUL-SEA
11h 21m2 stops
C$ 524
Find Deal
Thu, 4 Sep - Wed, 10 Sep
WestJet Logo
2:05 p.m. - 12:41 a.m.SEA-YUL
7h 36m1 stop
WestJet Logo
7:00 a.m. - 12:59 p.m.YUL-SEA
8h 59m1 stop
C$ 527WestJet
Find Deal
Sun, 28 Sep - Wed, 1 Oct
WestJet Logo
1:50 p.m. - 12:41 a.m.SEA-YUL
7h 51m1 stop
WestJet Logo
7:00 a.m. - 12:59 p.m.YUL-SEA
8h 59m1 stop
C$ 528WestJet
Find Deal
Sat, 11 Oct - Wed, 15 Oct
Air Canada Logo
7:15 a.m. - 3:28 p.m.SEA-YUL
5h 13mdirect
Air Canada Logo
4:45 p.m. - 7:31 p.m.YUL-SEA
5h 46mdirect
C$ 530Air Canada
Find Deal
Fri, 5 Sep - Wed, 17 Sep
Delta Logo
12:05 p.m. - 11:16 p.m.SEA-YUL
8h 11m1 stop
Delta Logo
6:00 a.m. - 2:44 p.m.YUL-SEA
11h 44m1 stop
C$ 564Delta
Find Deal
Wed, 3 Sep - Wed, 10 Sep
American Airlines Logo
5:43 p.m. - 4:33 p.m.SEA-YUL
19h 50m2 stops
American Airlines Logo
7:25 a.m. - 6:28 p.m.YUL-SEA
14h 03m1 stop
C$ 577American Airlines
Find Deal
Sat, 6 Sep - Fri, 12 Sep

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
11 Sep
SEA7:15 p.m.Seattle/Tacoma Intl
11h 05m
2 stops
YUL9:20 a.m.Montreal Pierre Elliott Trudeau Intl
12 Sep
YUL1:15 p.m.Montreal Pierre Elliott Trudeau Intl
8h 21m
1 stop
SEA6:36 p.m.Seattle/Tacoma Intl
C$ 513
Find similar
Air Canada
5 Sep
SEA7:15 a.m.Seattle/Tacoma Intl
5h 13m
YUL3:28 p.m.Montreal Pierre Elliott Trudeau Intl
17 Sep
YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 p.m.Seattle/Tacoma Intl
C$ 530
Find similar
Air Canada
5 Sep
SEA2:55 p.m.Seattle/Tacoma Intl
13h 15m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
9 Sep
YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 p.m.Seattle/Tacoma Intl
C$ 537
Find similar

American Airlines flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best American Airlines deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
American Airlines
5 Sep
SEA11:38 p.m.Seattle/Tacoma Intl
11h 02m
1 stop
YUL1:40 p.m.Montreal Pierre Elliott Trudeau Intl
6 Sep
YUL3:44 p.m.Montreal Pierre Elliott Trudeau Intl
20h 35m
1 stop
SEA9:19 a.m.Seattle/Tacoma Intl
C$ 517
Find similar
American Airlines
6 Sep
SEA5:43 p.m.Seattle/Tacoma Intl
19h 50m
2 stops
YUL4:33 p.m.Montreal Pierre Elliott Trudeau Intl
12 Sep
YUL7:25 a.m.Montreal Pierre Elliott Trudeau Intl
14h 03m
1 stop
SEA6:28 p.m.Seattle/Tacoma Intl
C$ 577
Find similar
American Airlines
12 Aug
SEA3:09 p.m.Seattle/Tacoma Intl
17h 27m
1 stop
YUL11:36 a.m.Montreal Pierre Elliott Trudeau Intl
23 Aug
YUL7:29 a.m.Montreal Pierre Elliott Trudeau Intl
15h 10m
1 stop
SEA7:39 p.m.Seattle/Tacoma Intl
C$ 846
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport 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, momondo users made 96,600 searches. Data last updated 31 July 2025.
Use the filters below to find and compare flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 3/9

8:40 a.m.-2:10 p.m.

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 7/10

6:45 a.m.-4:59 p.m.

2 stops13h 14m

C$ 512

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 11/9

7:15 p.m.-9:20 a.m.

2 stops11h 05m

Montreal Pierre Elliott Trudeau Intl

Fri 12/9

1:15 p.m.-6:36 p.m.

1 stop8h 21m

C$ 513

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/9

1:50 p.m.-12:41 a.m.

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

7:00 a.m.-12:59 p.m.

1 stop8h 59m

C$ 516

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/9

11:38 p.m.-1:40 p.m.

1 stop11h 02m

Montreal Pierre Elliott Trudeau Intl

Sat 6/9

3:44 p.m.-9:19 a.m.

1 stop20h 35m

C$ 517

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/9

1:50 p.m.-12:41 a.m.

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

10:15 a.m.-6:36 p.m.

2 stops11h 21m

C$ 524

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 28/9

2:05 p.m.-12:41 a.m.

1 stop7h 36m

Montreal Pierre Elliott Trudeau Intl

Wed 1/10

7:00 a.m.-12:59 p.m.

1 stop8h 59m

C$ 527

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 11/10

1:50 p.m.-12:41 a.m.

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Wed 15/10

7:00 a.m.-12:59 p.m.

1 stop8h 59m

C$ 528

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/9

7:15 a.m.-3:28 p.m.

Nonstop5h 13m

Montreal Pierre Elliott Trudeau Intl

Wed 17/9

4:45 p.m.-7:31 p.m.

Nonstop5h 46m

C$ 530

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 3/9

12:05 p.m.-11:16 p.m.

1 stop8h 11m

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

6:00 a.m.-2:44 p.m.

1 stop11h 44m

C$ 564

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 6/9

5:43 p.m.-4:33 p.m.

2 stops19h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 12/9

7:25 a.m.-6:28 p.m.

1 stop14h 03m

C$ 577

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 cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The month of May is, on average, the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from Seattle, with most prices found around C$ 555. The month of June is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around C$ 640.

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport is on a Friday when prices can be found for as low as C$ 664. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,186.

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 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$ 766 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$ 461 on momondo.

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

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl 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?

No. A direct flight is the cheapest option for a flight between Seattle to Montreal Pierre Elliott Trudeau Intl Airport.

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

As of July 2025, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 10% cheaper 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$ 189

Fastest flight time

5h 09m

Direct flights

Every day
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Seattle in the past 72 hours is C$ 189. 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$ 512.
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 5h 09m
Direct flights go from Seattle to Montreal Pierre Elliott Trudeau Intl Airport every day.
Search flight deals

  • 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 5h 09m, 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
Montebello
Trois-Rivières
Sherbrooke
Brossard
Cornwall
Drummondville
Longueuil
Dorval
Magog
Bromont
Saint-Sauveur
Saint-Jean-sur-Richelieu
Boucherville
North Hatley
Sutton
Waterloo

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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