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Cheap flights from Seattle to Montreal from C$ 180

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 10/8. 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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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$ 406WestJet
Tue, 25 Aug - Fri, 4 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$ 414WestJet
Tue, 25 Aug - Thu, 3 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$ 423WestJet
Sat, 22 Aug - Fri, 4 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$ 428WestJet
Fri, 7 Aug - Mon, 10 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$ 429WestJet
Wed, 26 Aug - Sat, 5 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$ 435WestJet
Fri, 21 Aug - Fri, 4 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$ 442WestJet
Fri, 21 Aug - Thu, 3 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$ 443WestJet
Tue, 25 Aug - Sat, 5 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$ 444WestJet
Tue, 25 Aug - Thu, 3 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$ 449WestJet
Tue, 25 Aug - Tue, 8 Sep

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
25 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
4 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 406
WestJet
25 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
3 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 414
WestJet
22 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
4 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 423

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
24 May
SEA5:50 a.m.Seattle/Tacoma Intl
9h 40m
2 stops
YUL6:30 p.m.Montreal Pierre Elliott Trudeau Intl
2 Jun
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
13h 28m
2 stops
SEA9:08 p.m.Seattle/Tacoma Intl
C$ 789
Air Canada
24 May
SEA8:00 a.m.Seattle/Tacoma Intl
7h 59m
1 stop
YUL6:59 p.m.Montreal Pierre Elliott Trudeau Intl
2 Jun
YUL3:40 p.m.Montreal Pierre Elliott Trudeau Intl
8h 28m
1 stop
SEA9:08 p.m.Seattle/Tacoma Intl
C$ 809
Air Canada
24 May
SEA5:50 a.m.Seattle/Tacoma Intl
9h 40m
2 stops
YUL6:30 p.m.Montreal Pierre Elliott Trudeau Intl
28 May
YUL3:40 p.m.Montreal Pierre Elliott Trudeau Intl
8h 28m
1 stop
SEA9:08 p.m.Seattle/Tacoma Intl
C$ 842

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 10 May 2026.
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

Cheapest round-trip
Quickest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 25/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

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

2 stops15h 00m

C$ 406

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 25/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

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

2 stops15h 00m

C$ 414

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 22/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

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

2 stops15h 00m

C$ 423

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 7/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 10/8

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

2 stops15h 00m

C$ 428

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 26/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

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

2 stops15h 00m

C$ 429

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 21/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

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

2 stops15h 00m

C$ 435

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 21/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

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

2 stops15h 00m

C$ 442

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 25/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

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

1 stop16h 40m

C$ 443

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 25/8

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

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

1 stop16h 40m

C$ 444

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 25/8

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$ 449

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?

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$ 681. The month of October is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around C$ 682.

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$ 668. This is often the case because there is less demand to fly during this day of the week. On the other hand, Wednesday 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$ 1,647.

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$ 948 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$ 369 on momondo.

Can stopping save me money on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

You could potentially save up to 50% 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 May 2026, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 47% 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

Fastest flight time

8h 30m

Direct flights

None
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 8h 30m
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 8h 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 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
Sherbrooke
Montebello
Brossard
Dorval
Longueuil
Cornwall
North Hatley
Boucherville
Drummondville
Saint-Sauveur
Magog
Bromont
Sutton
Saint-Jean-sur-Richelieu
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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