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Cheap flights from Seattle to Montreal from C$ 244

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 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
Multiple Airlines Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
Multiple Airlines Logo
1:30 p.m. - 10:42 p.m.
YUL
-
SEA
12h 12m
2 stops
C$ 560Multiple Airlines
Thu, 13 Aug - Wed, 19 Aug
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 561WestJet
Fri, 4 Sep - Tue, 8 Sep
Air Canada Logo
5:50 a.m. - 11:43 p.m.
SEA
-
YUL
14h 53m
2 stops
Air Canada Logo
9:15 a.m. - 6:32 p.m.
YUL
-
SEA
12h 17m
2 stops
C$ 564Air Canada
Wed, 19 Aug - Wed, 26 Aug
Multiple Airlines Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
Multiple Airlines Logo
5:30 p.m. - 10:42 p.m.
YUL
-
SEA
8h 12m
1 stop
C$ 566Multiple Airlines
Thu, 13 Aug - Wed, 19 Aug
Air Canada Logo
3:00 p.m. - 7:10 a.m.
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
1:30 p.m. - 10:42 p.m.
YUL
-
SEA
12h 12m
2 stops
C$ 570Air Canada
Thu, 13 Aug - Wed, 19 Aug
Air Canada Logo
5:50 a.m. - 11:43 p.m.
SEA
-
YUL
14h 53m
2 stops
Air Canada Logo
5:30 p.m. - 10:42 p.m.
YUL
-
SEA
8h 12m
1 stop
C$ 573Air Canada
Wed, 19 Aug - Wed, 26 Aug
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 574WestJet
Fri, 4 Sep - Tue, 8 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 576WestJet
Fri, 2 Oct - Thu, 15 Oct
Air Canada Logo
3:00 p.m. - 7:10 a.m.
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
5:30 p.m. - 10:42 p.m.
YUL
-
SEA
8h 12m
1 stop
C$ 577Air Canada
Mon, 10 Aug - Wed, 19 Aug
Air Canada Logo
5:50 a.m. - 11:43 p.m.
SEA
-
YUL
14h 53m
2 stops
Air Canada Logo
9:15 a.m. - 6:32 p.m.
YUL
-
SEA
12h 17m
2 stops
C$ 578Air Canada
Fri, 21 Aug - Fri, 28 Aug

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Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
19 Aug
SEA5:50 a.m.Seattle/Tacoma Intl
14h 53m
2 stops
YUL11:43 p.m.Montreal Pierre Elliott Trudeau Intl
26 Aug
YUL9:15 a.m.Montreal Pierre Elliott Trudeau Intl
12h 17m
2 stops
SEA6:32 p.m.Seattle/Tacoma Intl
C$ 564
Air Canada
19 Aug
SEA5:50 a.m.Seattle/Tacoma Intl
14h 53m
2 stops
YUL11:43 p.m.Montreal Pierre Elliott Trudeau Intl
26 Aug
YUL5:30 p.m.Montreal Pierre Elliott Trudeau Intl
8h 12m
1 stop
SEA10:42 p.m.Seattle/Tacoma Intl
C$ 573
Air Canada
10 Aug
SEA3:00 p.m.Seattle/Tacoma Intl
13h 10m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
19 Aug
YUL5:30 p.m.Montreal Pierre Elliott Trudeau Intl
8h 12m
1 stop
SEA10:42 p.m.Seattle/Tacoma Intl
C$ 577

United Airlines flights from Seattle to Montreal

Our best United Airlines deals on Seattle to Montreal flight tickets
United Airlines
4 Aug
SEA7:05 p.m.Seattle/Tacoma Intl
10h 11m
1 stop
YUL8:16 a.m.Montreal Pierre Elliott Trudeau Intl
5 Aug
YUL11:23 a.m.Montreal Pierre Elliott Trudeau Intl
11h 13m
1 stop
SEA7:36 p.m.Seattle/Tacoma Intl
C$ 644
United Airlines
18 Aug
SEA5:13 p.m.Seattle/Tacoma Intl
14h 27m
1 stop
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
19 Aug
YUL2:20 p.m.Montreal Pierre Elliott Trudeau Intl
9h 25m
1 stop
SEA8:45 p.m.Seattle/Tacoma Intl
C$ 649
United Airlines
20 Jul
SEA11:11 p.m.Seattle/Tacoma Intl
8h 29m
1 stop
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
28 Jul
YUL11:23 a.m.Montreal Pierre Elliott Trudeau Intl
11h 13m
1 stop
SEA7:36 p.m.Seattle/Tacoma Intl
C$ 841

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 8 July 2026.
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 - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 13/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

1:30 p.m.-10:42 p.m.

2 stops12h 12m

C$ 560

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 4/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

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

2 stops15h 00m

C$ 561

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 19/8

5:50 a.m.-11:43 p.m.

2 stops14h 53m

Montreal Pierre Elliott Trudeau Intl

Wed 26/8

9:15 a.m.-6:32 p.m.

2 stops12h 17m

C$ 564
Quickest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 13/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

5:30 p.m.-10:42 p.m.

1 stop8h 12m

C$ 566

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 13/8

3:00 p.m.-7:10 a.m.

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

1:30 p.m.-10:42 p.m.

2 stops12h 12m

C$ 570

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 19/8

5:50 a.m.-11:43 p.m.

2 stops14h 53m

Montreal Pierre Elliott Trudeau Intl

Wed 26/8

5:30 p.m.-10:42 p.m.

1 stop8h 12m

C$ 573

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 4/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

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

2 stops15h 00m

C$ 574

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 2/10

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

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

2 stops15h 00m

C$ 576

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 10/8

3:00 p.m.-7:10 a.m.

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

5:30 p.m.-10:42 p.m.

1 stop8h 12m

C$ 577

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 21/8

5:50 a.m.-11:43 p.m.

2 stops14h 53m

Montreal Pierre Elliott Trudeau Intl

Fri 28/8

9:15 a.m.-6:32 p.m.

2 stops12h 17m

C$ 578

Flights are sorted by cheapest round-trip flights 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 May. Flight prices, which tend to average around C$ 214, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Montreal from Seattle during September instead. Flights to Montreal in September, while not as cheap as those in May, still average around C$ 220.

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

Our data shows that Sunday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 911. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Montreal for around C$ 1,708.

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$ 1,006 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$ 388 on momondo.

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

There are 2 cabin classes 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 July 2026, prices for Seattle to Montreal flights are approximately 47% more expensive 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

7h 30m

Direct flights

None
The fastest flight from Seattle to Montreal takes 7h 30m
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 7h 30m, 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

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