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Cheap flights from Seattle to Montreal from C$ 283

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 22/9. 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

Enter your travel dates to find the best prices.
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$ 611WestJet
Tue, 8 Sep - Sat, 12 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$ 614WestJet
Fri, 4 Sep - Tue, 15 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$ 615WestJet
Tue, 15 Sep - Tue, 22 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$ 622WestJet
Tue, 8 Sep - Tue, 15 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$ 624WestJet
Fri, 4 Sep - Mon, 14 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 626WestJet
Sun, 13 Sep - Fri, 18 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 628WestJet
Fri, 4 Sep - Thu, 10 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$ 629WestJet
Fri, 4 Sep - Thu, 10 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
7:15 a.m. - 6:45 p.m.
YUL
-
SEA
14h 30m
1 stop
C$ 630WestJet
Fri, 4 Sep - Mon, 7 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$ 632WestJet
Tue, 8 Sep - Mon, 14 Sep

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
8 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
12 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 611
WestJet
4 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
15 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 614
WestJet
15 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
22 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 615

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
13 Jun
SEA3:00 p.m.Seattle/Tacoma Intl
13h 10m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
20 Jun
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
18h 07m
1 stop
SEA9:07 p.m.Seattle/Tacoma Intl
C$ 897
Air Canada
13 Jun
SEA7:20 p.m.Seattle/Tacoma Intl
11h 39m
2 stops
YUL9:59 a.m.Montreal Pierre Elliott Trudeau Intl
20 Jun
YUL9:10 p.m.Montreal Pierre Elliott Trudeau Intl
15h 57m
2 stops
SEA10:07 a.m.Seattle/Tacoma Intl
C$ 899
Air Canada
13 Jun
SEA3:00 p.m.Seattle/Tacoma Intl
13h 10m
2 stops
YUL7:10 a.m.Montreal Pierre Elliott Trudeau Intl
20 Jun
YUL9:20 p.m.Montreal Pierre Elliott Trudeau Intl
15h 47m
2 stops
SEA10:07 a.m.Seattle/Tacoma Intl
C$ 904

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 30 May 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

Tue 8/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

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

2 stops15h 00m

C$ 611

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 15/9

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

2 stops15h 00m

C$ 614

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 15/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 22/9

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

2 stops15h 00m

C$ 615

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 8/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

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

2 stops15h 00m

C$ 622

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

Mon 14/9

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

2 stops15h 00m

C$ 624

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 13/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

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

1 stop16h 40m

C$ 626

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

Thu 10/9

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

1 stop16h 40m

C$ 628

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

Thu 10/9

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

2 stops15h 00m

C$ 629
Quickest round-trip

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

Mon 7/9

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

1 stop14h 30m

C$ 630

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 8/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 14/9

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

2 stops15h 00m

C$ 632

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 May. Flight prices, which tend to average around C$ 208, 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$ 214.

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

Our data shows that Thursday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 745. 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$ 1,662.

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$ 972 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$ 372 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 51% 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 May 2026, prices for Seattle to Montreal flights are approximately 24% 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

8h 03m

Direct flights

None
The fastest flight from Seattle to Montreal takes 8h 03m
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 8h 03m, 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