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Cheap flights from Seattle to Montreal from $181

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 9/22. 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

Discover deals from 900+ travel sites with momondo.

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 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
Multiple Airlines Logo
6:00 pm - 10:42 pm
YUL
-
SEA
7h 42m
1 stop
$398Multiple Airlines
Tue, Oct 13 - Thu, Oct 15
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$400WestJet
Tue, Sep 22 - Wed, Sep 30
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$401WestJet
Wed, Sep 23 - Wed, Sep 30
Air Canada Logo
3:00 pm - 7:10 am
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
10:40 am - 9:04 pm
YUL
-
SEA
13h 24m
2 stops
$402Air Canada
Tue, Oct 13 - Thu, Oct 15
Air Canada Logo
3:00 pm - 7:10 am
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
2:10 pm - 9:04 pm
YUL
-
SEA
9h 54m
1 stop
$404Air Canada
Tue, Oct 13 - Thu, Oct 15
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$405WestJet
Wed, Sep 9 - Tue, Sep 29
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$406WestJet
Wed, Sep 9 - Fri, Sep 25
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$407WestJet
Thu, Sep 10 - Fri, Sep 25
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
7:15 am - 6:45 pm
YUL
-
SEA
14h 30m
1 stop
$408WestJet
Sun, Oct 4 - Fri, Oct 9
Air Canada Logo
3:00 pm - 7:10 am
SEA
-
YUL
13h 10m
2 stops
Air Canada Logo
5:30 pm - 10:42 pm
YUL
-
SEA
8h 12m
1 stop
$409Air Canada
Thu, Aug 13 - Wed, Aug 19

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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
Aug 11
SEA11:16 pmSeattle/Tacoma Intl
12h 28m
1 stop
YUL2:44 pmMontreal Pierre Elliott Trudeau Intl
Aug 12
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
18h 55m
1 stop
SEA9:29 amSeattle/Tacoma Intl
$443
American Airlines
Jul 8
SEA2:09 pmSeattle/Tacoma Intl
18h 34m
1 stop
YUL11:43 amMontreal Pierre Elliott Trudeau Intl
Jul 14
YUL1:05 pmMontreal Pierre Elliott Trudeau Intl
12h 51m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
$472
American Airlines
Jul 8
SEA2:09 pmSeattle/Tacoma Intl
18h 34m
1 stop
YUL11:43 amMontreal Pierre Elliott Trudeau Intl
Jul 14
YUL1:05 pmMontreal Pierre Elliott Trudeau Intl
11h 30m
1 stop
SEA9:35 pmSeattle/Tacoma Intl
$473

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
Sep 22
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Sep 30
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$400
WestJet
Sep 23
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Sep 30
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$401
WestJet
Sep 9
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Sep 29
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$405

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 832,500 searches. Data last updated June 26, 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 10/13

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

6:00 pm-10:42 pm

1 stop7h 42m

$398

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 9/30

6:45 am-6:45 pm

2 stops15h 00m

$400

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 9/23

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 9/30

6:45 am-6:45 pm

2 stops15h 00m

$401

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 10/13

3:00 pm-7:10 am

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

10:40 am-9:04 pm

2 stops13h 24m

$402

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 10/13

3:00 pm-7:10 am

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

2:10 pm-9:04 pm

1 stop9h 54m

$404

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 9/9

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 9/29

6:45 am-6:45 pm

2 stops15h 00m

$405

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 9/9

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 9/25

6:45 am-6:45 pm

2 stops15h 00m

$406

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 9/10

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 9/25

6:45 am-6:45 pm

2 stops15h 00m

$407

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/4

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 10/9

7:15 am-6:45 pm

1 stop14h 30m

$408

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 8/13

3:00 pm-7:10 am

2 stops13h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 8/19

5:30 pm-10:42 pm

1 stop8h 12m

$409

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 August is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around $588.

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

The cheapest day to depart from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is on a Wednesday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Wednesday will often find tickets for as low as $600. Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $840. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $719 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 $274 on momondo.

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

There are 3 cabin classes available to choose from on Seattle to Montreal Pierre Elliott Trudeau Intl Airport 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?

You could potentially save up to 41% 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 June 2026, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 33% 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

$3,219

Fastest flight time

7h 21m

Direct flights

None
The best flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $3,219
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 7h 21m
There are no direct flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - 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?

    The distance between Seattle/Tacoma Intl and Montreal Pierre Elliott Trudeau Intl is about 2274.5 mi. Typically, this will take 7h 21m by plane in normal conditions.

  • 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 many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 you'll need for your trip to Montreal Pierre Elliott Trudeau Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Montreal Pierre Elliott Trudeau Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

  • What is the most popular airline from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Best airlines flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Compare and see reviews for airlines that fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $265Free CancellationRating
7.4
9,895 reviews
Search United Airlines flights
WestJetPriceFrom $281Free CancellationRating
7.2
3,384 reviews
Search WestJet flights
DeltaPriceFrom $310Free CancellationRating
7.8
8,452 reviews
Search Delta flights
Air CanadaPriceFrom $374Free CancellationRating
7.1
11,267 reviews
Search Air Canada flights

Traveling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Dorval
Brossard
Longueuil
Trois-Rivières
Cornwall
Saint-Sauveur
Sherbrooke
Boucherville
Magog
Drummondville
Montebello
Saint-Jean-sur-Richelieu
Bromont
North Hatley

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. All flights to Montreal from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

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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