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Cheap flights from Seattle to Montreal from $102

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 10/17. 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

United Airlines Logo
3:28 pm - 8:16 amSEA-YUL
13h 48m1 stop
United Airlines Logo
9:45 am - 3:45 pmYUL-SEA
9h 00m1 stop
$361United Airlines
Find Deal
jue., oct. 2 - sáb., oct. 25
Air Canada Logo
5:30 am - 7:32 pmSEA-YUL
11h 02m2 stops
Air Canada Logo
7:30 am - 2:16 pmYUL-SEA
9h 46m1 stop
$362Air Canada
Find Deal
mié., oct. 1 - sáb., oct. 25
Air Canada Logo
10:00 am - 8:50 pmSEA-YUL
7h 50m1 stop
Air Canada Logo
3:30 pm - 9:45 pmYUL-SEA
9h 15m1 stop
$364Air Canada
Find Deal
sáb., oct. 4 - vie., oct. 24
WestJet Logo
8:40 am - 12:27 amSEA-YUL
12h 47m2 stops
WestJet Logo
6:45 am - 12:59 pmYUL-SEA
33h 14m2 stops
$366WestJet
Find Deal
jue., oct. 2 - vie., oct. 24
Multiple Airlines Logo
9:39 pm - 12:27 amSEA-YUL
47h 48m2 stops
Multiple Airlines Logo
4:15 pm - 2:20 pmYUL-SEA
25h 05m1 stop
$367Multiple Airlines
Find Deal
sáb., oct. 4 - lun., oct. 27
United Airlines Logo
11:40 pm - 10:40 amSEA-YUL
8h 00m1 stop
United Airlines Logo
6:30 pm - 12:59 amYUL-SEA
9h 29m1 stop
$372United Airlines
Find Deal
vie., oct. 3 - dom., oct. 5
Delta Logo
9:45 pm - 1:35 pmSEA-YUL
12h 50m1 stop
Delta Logo
12:55 pm - 10:03 pmYUL-SEA
12h 08m1 stop
$383Delta
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vie., oct. 3 - mar., oct. 28
WestJet Logo
3:10 pm - 12:43 amSEA-YUL
30h 33m2 stops
WestJet Logo
4:15 pm - 10:23 amYUL-SEA
21h 08m2 stops
$387WestJet
Find Deal
jue., oct. 30 - jue., nov. 20
American Airlines Logo
11:20 pm - 3:18 pmSEA-YUL
12h 58m1 stop
American Airlines Logo
7:30 am - 10:20 pmYUL-SEA
17h 50m1 stop
$395American Airlines
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vie., nov. 7 - sáb., nov. 15
American Airlines Logo
12:34 am - 11:40 amSEA-YUL
8h 06m1 stop
American Airlines Logo
4:00 pm - 11:05 pmYUL-SEA
10h 05m1 stop
$402American Airlines
Find Deal
mié., oct. 29 - jue., nov. 6

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
Nov 7
SEA11:20 pmSeattle/Tacoma Intl
12h 58m
1 stop
YUL3:18 pmMontreal Pierre Elliott Trudeau Intl
Nov 15
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
17h 50m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
$395
Find similar
American Airlines
Oct 29
SEA12:34 amSeattle/Tacoma Intl
8h 06m
1 stop
YUL11:40 amMontreal Pierre Elliott Trudeau Intl
Nov 6
YUL4:00 pmMontreal Pierre Elliott Trudeau Intl
10h 05m
1 stop
SEA11:05 pmSeattle/Tacoma Intl
$402
Find similar
American Airlines
Oct 31
SEA12:34 amSeattle/Tacoma Intl
8h 06m
1 stop
YUL11:40 amMontreal Pierre Elliott Trudeau Intl
Nov 4
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
14h 30m
2 stops
SEA7:00 pmSeattle/Tacoma Intl
$405
Find similar

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 2
SEA8:40 amSeattle/Tacoma Intl
12h 47m
2 stops
YUL12:27 amMontreal Pierre Elliott Trudeau Intl
Oct 24
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
33h 14m
2 stops
SEA12:59 pmSeattle/Tacoma Intl
$366
Find similar
WestJet
Oct 30
SEA3:10 pmSeattle/Tacoma Intl
30h 33m
2 stops
YUL12:43 amMontreal Pierre Elliott Trudeau Intl
Nov 20
YUL4:15 pmMontreal Pierre Elliott Trudeau Intl
21h 08m
2 stops
SEA10:23 amSeattle/Tacoma Intl
$387
Find similar
WestJet
Oct 23
SEA8:40 amSeattle/Tacoma Intl
12h 47m
2 stops
YUL12:27 amMontreal Pierre Elliott Trudeau Intl
Oct 26
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
34h 35m
3 stops
SEA2:20 pmSeattle/Tacoma Intl
$396
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 septiembre 16, 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

jue. 10/2

3:28 pm-8:16 am

1 stop13h 48m

Montreal Pierre Elliott Trudeau Intl

sáb. 10/25

9:45 am-3:45 pm

1 stop9h 00m

$361

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

mié. 10/1

5:30 am-7:32 pm

2 stops11h 02m

Montreal Pierre Elliott Trudeau Intl

sáb. 10/25

7:30 am-2:16 pm

1 stop9h 46m

$362

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

sáb. 10/4

10:00 am-8:50 pm

1 stop7h 50m

Montreal Pierre Elliott Trudeau Intl

vie. 10/24

3:30 pm-9:45 pm

1 stop9h 15m

$364

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

jue. 10/2

8:40 am-12:27 am

2 stops12h 47m

Montreal Pierre Elliott Trudeau Intl

vie. 10/24

6:45 am-12:59 pm

2 stops33h 14m

$366

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

sáb. 10/4

9:39 pm-12:27 am

2 stops47h 48m

Montreal Pierre Elliott Trudeau Intl

lun. 10/27

4:15 pm-2:20 pm

1 stop25h 05m

$367

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

vie. 10/3

11:40 pm-10:40 am

1 stop8h 00m

Montreal Pierre Elliott Trudeau Intl

dom. 10/5

6:30 pm-12:59 am

1 stop9h 29m

$372

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

vie. 10/3

9:45 pm-1:35 pm

1 stop12h 50m

Montreal Pierre Elliott Trudeau Intl

mar. 10/28

12:55 pm-10:03 pm

1 stop12h 08m

$383

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

jue. 10/30

3:10 pm-12:43 am

2 stops30h 33m

Montreal Pierre Elliott Trudeau Intl

jue. 11/20

4:15 pm-10:23 am

2 stops21h 08m

$387

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

vie. 11/7

11:20 pm-3:18 pm

1 stop12h 58m

Montreal Pierre Elliott Trudeau Intl

sáb. 11/15

7:30 am-10:20 pm

1 stop17h 50m

$395

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

mié. 10/29

12:34 am-11:40 am

1 stop8h 06m

Montreal Pierre Elliott Trudeau Intl

jue. 11/6

4:00 pm-11:05 pm

1 stop10h 05m

$402

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 $666. Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $791. 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 $733.

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 $550 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?

You could potentially save up to 25% 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 September 2025, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 19% 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

$219

Fastest flight time

5h 13m

Direct flights

Every day
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Seattle in the past 72 hours is $219. The best round-trip flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $482.
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 5h 13m
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
8,924 reviews
Search United Airlines flights
Air CanadaPriceFrom $272Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,093 reviews
Search WestJet flights
DeltaPriceFrom $455Free CancellationRating
7.9
7,957 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 $650. 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 $607.

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
Saint-Sauveur
Sherbrooke
Cornwall
Boucherville
Bromont
Drummondville
Montebello
Saint-Jean-sur-Richelieu
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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