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Cheap flights from Seattle to Montreal from $151

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 10/7. 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 (SEA-YUL)

Cheap round-trip flights

WestJet Logo
2:05 pm - 12:41 amSEA-YUL
7h 36m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$328WestJet
Find Deal
Sun, Oct 12 - Thu, Oct 16
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$336WestJet
Find Deal
Wed, Oct 1 - Thu, Oct 16
Logo
8:40 am - 2:10 pmSEA-YUL
26h 30m1 stop
Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$339
Find Deal
Mon, Sep 29 - Thu, Oct 16
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$341WestJet
Find Deal
Wed, Oct 15 - Mon, Oct 20
Air Canada Logo
5:30 am - 4:36 pmSEA-YUL
8h 06m1 stop
Air Canada Logo
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
$345Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
Air Canada Logo
7:15 am - 3:28 pmSEA-YUL
5h 13mnonstop
Air Canada Logo
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
$346Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
Logo
7:55 am - 2:09 pmSEA-YUL
27h 14m1 stop
Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$352
Find Deal
Wed, Sep 17 - Tue, Sep 23
Logo
8:40 am - 2:10 pmSEA-YUL
26h 30m1 stop
Logo
10:00 am - 7:05 pmYUL-SEA
12h 05m2 stops
$355
Find Deal
Mon, Sep 29 - Wed, Oct 15
Air Canada Logo
2:55 pm - 7:10 amSEA-YUL
13h 15m2 stops
Air Canada Logo
6:00 am - 10:59 amYUL-SEA
7h 59m1 stop
$356Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
American Airlines Logo
11:05 pm - 12:24 pmSEA-YUL
10h 19m1 stop
American Airlines Logo
7:25 am - 6:28 pmYUL-SEA
14h 03m1 stop
$408American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27

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
Oct 12
SEA2:05 pmSeattle/Tacoma Intl
7h 36m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 16
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
$328
Find similar
WestJet
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 16
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
$336
Find similar
WestJet
Oct 15
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 20
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
$341
Find similar

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
Oct 5
SEA5:30 amSeattle/Tacoma Intl
8h 06m
1 stop
YUL4:36 pmMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 pmSeattle/Tacoma Intl
$345
Find similar
Air Canada
Oct 5
SEA7:15 amSeattle/Tacoma Intl
5h 13m
YUL3:28 pmMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 pmSeattle/Tacoma Intl
$346
Find similar
Air Canada
Oct 5
SEA2:55 pmSeattle/Tacoma Intl
13h 15m
2 stops
YUL7:10 amMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
7h 59m
1 stop
SEA10:59 amSeattle/Tacoma Intl
$356
Find similar

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 August 24, 2025.
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

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/12

2:05 pm-12:41 am

1 stop7h 36m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$328

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 10/1

1:50 pm-12:41 am

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$336

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/29

8:40 am-2:10 pm

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$339

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 10/15

1:50 pm-12:41 am

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Mon 10/20

7:00 am-12:59 pm

1 stop8h 59m

$341

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

5:30 am-4:36 pm

1 stop8h 06m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

4:45 pm-7:31 pm

Nonstop5h 46m

$345

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

7:15 am-3:28 pm

Nonstop5h 13m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

4:45 pm-7:31 pm

Nonstop5h 46m

$346

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 9/17

7:55 am-2:09 pm

1 stop27h 14m

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

7:00 am-12:59 pm

1 stop8h 59m

$352

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/29

8:40 am-2:10 pm

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 10/15

10:00 am-7:05 pm

2 stops12h 05m

$355

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

2:55 pm-7:10 am

2 stops13h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

6:00 am-10:59 am

1 stop7h 59m

$356

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 9/20

11:05 pm-12:24 pm

1 stop10h 19m

Montreal Pierre Elliott Trudeau Intl

Sat 9/27

7:25 am-6:28 pm

1 stop14h 03m

$408

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 cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The month of June is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around $464.

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 Monday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Monday will often find tickets for as low as $689. Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport on a Wednesday will generally be more expensive and average around $800. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

In the afternoon is the cheapest time of day to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as $265. Flying to Montreal Pierre Elliott Trudeau Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $754.

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 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 $557 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 $395 on momondo.

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

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl 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?

No. A direct flight is the cheapest option for a flight between Seattle to Montreal Pierre Elliott Trudeau Intl Airport.

How have Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight prices changed over time?

As of August 2025, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 2% 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

$200

Fastest flight time

5h 09m

Direct flights

Every day
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Seattle in the past 72 hours is $200. The best round-trip flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $555.
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 5h 09m
Direct flights go from Seattle to Montreal Pierre Elliott Trudeau Intl Airport every day.
Search flight deals

  • 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 5h 13m 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 $228Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Air CanadaPriceFrom $272Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,048 reviews
Search WestJet flights
DeltaPriceFrom $455Free CancellationRating
7.9
7,980 reviews
Search Delta flights
American AirlinesPriceFrom $465Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • United Airlines Flights From Seattle to Montreal Pierre Elliott Trudeau Intl Airport

    The lowest priced United Airlines flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport from the last 72 hours was $228. Generally, United Airlines has 7 flights on this route every week with an average price of $615. United Airlines is rated 7.4/10 by our users.

  • Air Canada Flights From Seattle to Montreal Pierre Elliott Trudeau Intl Airport

    Another popular option for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights is Air Canada (7.1/10, 10,000 ratings). Air Canada flies from Seattle to Montreal Pierre Elliott Trudeau Intl Airport around 7 times per week, with deals starting from $272 round-trip and rising to an average price of around $608.

Traveling to a place near Montreal?

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