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Cheap flights from Seattle to Montreal from C$ 137

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 30/4. 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

Enter your travel dates to find the best prices.
Air Canada Logo
3:40 p.m. - 7:10 a.m.SEA-YUL
12h 30m2 stops
Air Canada Logo
8:10 a.m. - 7:16 p.m.YUL-SEA
14h 06m2 stops
C$ 389Air Canada
Find Deal
Sat, 10 Jan - Sat, 17 Jan
WestJet Logo
3:10 p.m. - 7:05 a.m.SEA-YUL
12h 55m1 stop
WestJet Logo
4:15 p.m. - 2:19 p.m.YUL-SEA
25h 04m1 stop
C$ 402WestJet
Find Deal
Thu, 29 Jan - Mon, 2 Feb
Air Canada Logo
3:40 p.m. - 7:10 a.m.SEA-YUL
12h 30m2 stops
Air Canada Logo
3:10 p.m. - 10:16 p.m.YUL-SEA
10h 06m1 stop
C$ 404Air Canada
Find Deal
Sat, 10 Jan - Sat, 17 Jan
Air Canada Logo
8:10 a.m. - 7:22 p.m.SEA-YUL
8h 12m1 stop
Air Canada Logo
1:25 p.m. - 7:16 p.m.YUL-SEA
8h 51m1 stop
C$ 405Air Canada
Find Deal
Sat, 10 Jan - Sat, 17 Jan
Air Canada Logo
8:00 p.m. - 6:44 a.m.SEA-YUL
7h 44m1 stop
Air Canada Logo
7:30 a.m. - 2:31 p.m.YUL-SEA
10h 01m1 stop
C$ 406Air Canada
Find Deal
Mon, 8 Dec - Sun, 14 Dec
WestJet Logo
3:10 p.m. - 7:05 a.m.SEA-YUL
12h 55m1 stop
WestJet Logo
7:30 p.m. - 2:19 p.m.YUL-SEA
21h 49m1 stop
C$ 409WestJet
Find Deal
Thu, 29 Jan - Mon, 2 Feb
Air Canada Logo
8:00 p.m. - 8:22 a.m.SEA-YUL
9h 22m2 stops
Air Canada Logo
7:30 a.m. - 2:31 p.m.YUL-SEA
10h 01m1 stop
C$ 415Air Canada
Find Deal
Mon, 8 Dec - Sun, 14 Dec
WestJet Logo
3:10 p.m. - 7:05 a.m.SEA-YUL
12h 55m1 stop
WestJet Logo
6:45 a.m. - 2:19 p.m.YUL-SEA
34h 34m2 stops
C$ 429WestJet
Find Deal
Thu, 29 Jan - Mon, 2 Feb
WestJet Logo
7:05 a.m. - 12:40 a.m.SEA-YUL
14h 35m2 stops
WestJet Logo
5:30 p.m. - 8:28 p.m.YUL-SEA
29h 58m1 stop
C$ 430WestJet
Find Deal
Fri, 22 May - Wed, 27 May
WestJet Logo
7:05 a.m. - 12:40 a.m.SEA-YUL
14h 35m2 stops
WestJet Logo
6:45 a.m. - 8:28 p.m.YUL-SEA
16h 43m2 stops
C$ 432WestJet
Find Deal
Fri, 22 May - Wed, 27 May

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
10 Jan
SEA3:40 p.m.Seattle/Tacoma Intl
12h 30m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
17 Jan
YUL8:10 a.m.Montreal Pierre Elliott Trudeau Intl
14h 06m
2 stops
SEA7:16 p.m.Seattle/Tacoma Intl
C$ 389
Find similar
Air Canada
10 Jan
SEA3:40 p.m.Seattle/Tacoma Intl
12h 30m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
17 Jan
YUL3:10 p.m.Montreal Pierre Elliott Trudeau Intl
10h 06m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 404
Find similar
Air Canada
10 Jan
SEA8:10 a.m.Seattle/Tacoma Intl
8h 12m
1 stop
YUL7:22 p.m.Montreal Pierre Elliott Trudeau Intl
17 Jan
YUL1:25 p.m.Montreal Pierre Elliott Trudeau Intl
8h 51m
1 stop
SEA7:16 p.m.Seattle/Tacoma Intl
C$ 405
Find similar

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
29 Jan
SEA3:10 p.m.Seattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
2 Feb
YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 p.m.Seattle/Tacoma Intl
C$ 402
Find similar
WestJet
29 Jan
SEA3:10 p.m.Seattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
2 Feb
YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl
21h 49m
1 stop
SEA2:19 p.m.Seattle/Tacoma Intl
C$ 409
Find similar
WestJet
29 Jan
SEA3:10 p.m.Seattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
2 Feb
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
34h 34m
2 stops
SEA2:19 p.m.Seattle/Tacoma Intl
C$ 429
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Montreal 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 26 November 2025.
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

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 10/1

3:40 p.m.-7:10 a.m.

2 stops12h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

8:10 a.m.-7:16 p.m.

2 stops14h 06m

C$ 389

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 29/1

3:10 p.m.-7:05 a.m.

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

4:15 p.m.-2:19 p.m.

1 stop25h 04m

C$ 402

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 10/1

3:40 p.m.-7:10 a.m.

2 stops12h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

3:10 p.m.-10:16 p.m.

1 stop10h 06m

C$ 404

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 10/1

8:10 a.m.-7:22 p.m.

1 stop8h 12m

Montreal Pierre Elliott Trudeau Intl

Sat 17/1

1:25 p.m.-7:16 p.m.

1 stop8h 51m

C$ 405

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 8/12

8:00 p.m.-6:44 a.m.

1 stop7h 44m

Montreal Pierre Elliott Trudeau Intl

Sun 14/12

7:30 a.m.-2:31 p.m.

1 stop10h 01m

C$ 406

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 29/1

3:10 p.m.-7:05 a.m.

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

7:30 p.m.-2:19 p.m.

1 stop21h 49m

C$ 409

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 8/12

8:00 p.m.-8:22 a.m.

2 stops9h 22m

Montreal Pierre Elliott Trudeau Intl

Sun 14/12

7:30 a.m.-2:31 p.m.

1 stop10h 01m

C$ 415

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 29/1

3:10 p.m.-7:05 a.m.

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

6:45 a.m.-2:19 p.m.

2 stops34h 34m

C$ 429

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:05 a.m.-12:40 a.m.

2 stops14h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

5:30 p.m.-8:28 p.m.

1 stop29h 58m

C$ 430

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:05 a.m.-12:40 a.m.

2 stops14h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

6:45 a.m.-8:28 p.m.

2 stops16h 43m

C$ 432

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?

What is the cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from Seattle is in September. Flight prices, which tend to average around C$ 680, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Montreal from Seattle during August instead. Flights to Montreal in August, while not as cheap as those in September, still average around C$ 694.

What is the cheapest day to depart on your flight to Montreal?

Our data shows that Friday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 689. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Montreal for around C$ 1,405.

What is the cheapest time of day to depart on your flight to Montreal?

Our data shows that the cheapest Seattle to Montreal flights are usually those with departure times in the evening. Our users have found flights to Montreal in the evening for as low as C$ 321. Flights in the morning are often more expensive with an average ticket price of C$ 1,070.

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 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$ 788 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$ 557 on momondo.

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

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl 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 32% 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 November 2025, prices for Seattle to Montreal flights are approximately 32% 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

Fastest flight time

6h 55m

Direct flights

Tue, Sat and Sun

Airports in Montreal

1 airport
The fastest flight from Seattle to Montreal takes 6h 55m
Direct flights go from Seattle to Montreal on Tuesday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Montreal: Montreal Pierre Elliott Trudeau Intl (YUL)
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  • 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 7h 44m, 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?

  • What is the most popular airline 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

Airports listed have a maximum distance of 15.1 km from Montreal
Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport