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Cheap flights from Seattle to Montreal from $156

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 12/10. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
3:10 pm - 7:05 amSEA-YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:19 pmYUL-SEA
21h 49m1 stop
$277WestJet
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Fri, Mar 20 - Sun, Mar 22
WestJet Logo
3:10 pm - 12:38 amSEA-YUL
30h 28m2 stops
WestJet Logo
4:15 pm - 2:19 pmYUL-SEA
25h 04m1 stop
$286WestJet
Find Deal
Sun, Apr 5 - Mon, Apr 13
WestJet Logo
3:10 pm - 7:05 amSEA-YUL
12h 55m1 stop
WestJet Logo
6:45 am - 2:19 pmYUL-SEA
34h 34m2 stops
$312WestJet
Find Deal
Fri, Mar 20 - Sun, Mar 22
WestJet Logo
3:10 pm - 12:38 amSEA-YUL
30h 28m2 stops
WestJet Logo
6:45 am - 2:19 pmYUL-SEA
34h 34m2 stops
$319WestJet
Find Deal
Sun, Apr 5 - Mon, Apr 13
WestJet Logo
3:10 pm - 7:05 amSEA-YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:19 pmYUL-SEA
21h 49m1 stop
$330WestJet
Find Deal
Tue, Mar 31 - Wed, Apr 8
WestJet Logo
3:10 pm - 7:05 amSEA-YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:20 pmYUL-SEA
21h 50m1 stop
$375WestJet
Find Deal
Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
11:10 pm - 4:27 pmSEA-YUL
14h 17m1 stop
Multiple Airlines Logo
6:45 am - 2:20 pmYUL-SEA
10h 35m2 stops
$377Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Multiple Airlines Logo
11:10 pm - 4:27 pmSEA-YUL
14h 17m1 stop
Multiple Airlines Logo
7:30 pm - 2:20 pmYUL-SEA
21h 50m1 stop
$378Multiple Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
Delta Logo
7:15 am - 11:42 pmSEA-YUL
13h 27m2 stops
Delta Logo
7:10 am - 3:35 pmYUL-SEA
11h 25m2 stops
$465Delta
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Tue, Nov 18 - Tue, Nov 25
American Airlines Logo
9:45 pm - 1:45 pmSEA-YUL
13h 00m1 stop
American Airlines Logo
3:52 pm - 1:08 pmYUL-SEA
24h 16m1 stop
$493American Airlines
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Fri, Jan 16 - Mon, Jan 19

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
Mar 20
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Mar 22
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
21h 49m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$277
Find similar
WestJet
Apr 5
SEA3:10 pmSeattle/Tacoma Intl
30h 28m
2 stops
YUL12:38 amMontreal Pierre Elliott Trudeau Intl
Apr 13
YUL4:15 pmMontreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$286
Find similar
WestJet
Mar 20
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Mar 22
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
34h 34m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$312
Find similar

Delta flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best Delta deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
Delta
Nov 18
SEA7:15 amSeattle/Tacoma Intl
13h 27m
2 stops
YUL11:42 pmMontreal Pierre Elliott Trudeau Intl
Nov 25
YUL7:10 amMontreal Pierre Elliott Trudeau Intl
11h 25m
2 stops
SEA3:35 pmSeattle/Tacoma Intl
$465
Find similar
Delta
Oct 27
SEA11:10 pmSeattle/Tacoma Intl
11h 25m
2 stops
YUL1:35 pmMontreal Pierre Elliott Trudeau Intl
Oct 29
YUL2:25 pmMontreal Pierre Elliott Trudeau Intl
12h 29m
2 stops
SEA11:54 pmSeattle/Tacoma Intl
$771
Find similar
Delta
Nov 1
SEA11:43 amSeattle/Tacoma Intl
8h 31m
1 stop
YUL11:14 pmMontreal Pierre Elliott Trudeau Intl
Nov 8
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
10h 41m
2 stops
SEA2:41 pmSeattle/Tacoma Intl
$796
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 October 20, 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

Fri 3/20

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 3/22

7:30 pm-2:19 pm

1 stop21h 49m

$277

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 4/5

3:10 pm-12:38 am

2 stops30h 28m

Montreal Pierre Elliott Trudeau Intl

Mon 4/13

4:15 pm-2:19 pm

1 stop25h 04m

$286

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 3/20

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 3/22

6:45 am-2:19 pm

2 stops34h 34m

$312

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 4/5

3:10 pm-12:38 am

2 stops30h 28m

Montreal Pierre Elliott Trudeau Intl

Mon 4/13

6:45 am-2:19 pm

2 stops34h 34m

$319

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 3/31

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 4/8

7:30 pm-2:19 pm

1 stop21h 49m

$330

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 12/2

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 12/9

7:30 pm-2:20 pm

1 stop21h 50m

$375

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 12/1

11:10 pm-4:27 pm

1 stop14h 17m

Montreal Pierre Elliott Trudeau Intl

Mon 12/8

6:45 am-2:20 pm

2 stops10h 35m

$377

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 12/1

11:10 pm-4:27 pm

1 stop14h 17m

Montreal Pierre Elliott Trudeau Intl

Mon 12/8

7:30 pm-2:20 pm

1 stop21h 50m

$378

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 11/18

7:15 am-11:42 pm

2 stops13h 27m

Montreal Pierre Elliott Trudeau Intl

Tue 11/25

7:10 am-3:35 pm

2 stops11h 25m

$465

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 1/16

9:45 pm-1:45 pm

1 stop13h 00m

Montreal Pierre Elliott Trudeau Intl

Mon 1/19

3:52 pm-1:08 pm

1 stop24h 16m

$493

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 $468.

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 $642. Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $817. 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 $731.

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 $560 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 October 2025, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 23% 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

$259

Direct flights

None
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Seattle in the past 72 hours is $259. The best round-trip flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $534.
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

  • 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 12h 55m 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 $207Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
Air CanadaPriceFrom $277Free CancellationRating
7.1
10,335 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,129 reviews
Search WestJet flights
DeltaPriceFrom $455Free CancellationRating
7.9
7,978 reviews
Search Delta flights
American AirlinesPriceFrom $465Free CancellationRating
7.2
11,024 reviews
Search American Airlines flights

Traveling to a place near Montreal?

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

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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