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Cheap flights from Seattle to Montreal from $120

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 1/15. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:05 am - 9:00 pm
SEA
-
YUL
7h 55m1 stop
Air Canada Logo
2:25 pm - 10:06 pm
YUL
-
SEA
10h 41m2 stops
$254Air Canada
Sat, Jan 24 - Mon, Feb 2
Air Canada Logo
3:40 pm - 7:10 am
SEA
-
YUL
12h 30m2 stops
Air Canada Logo
2:25 pm - 10:06 pm
YUL
-
SEA
10h 41m2 stops
$257Air Canada
Sat, Jan 24 - Mon, Feb 2
WestJet Logo
7:05 am - 12:42 am
SEA
-
YUL
14h 37m1 stop
WestJet Logo
6:45 am - 1:08 pm
YUL
-
SEA
9h 23m1 stop
$265WestJet
Thu, May 14 - Wed, May 20
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m1 stop
WestJet Logo
4:15 pm - 2:19 pm
YUL
-
SEA
25h 04m1 stop
$266WestJet
Sun, Jan 25 - Mon, Feb 2
Air Canada Logo
8:00 pm - 6:44 am
SEA
-
YUL
7h 44m1 stop
Air Canada Logo
9:10 am - 7:16 pm
YUL
-
SEA
13h 06m2 stops
$274Air Canada
Mon, Feb 2 - Tue, Feb 3
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m1 stop
WestJet Logo
4:15 pm - 2:19 pm
YUL
-
SEA
25h 04m1 stop
$276WestJet
Sun, Jan 25 - Mon, Feb 2
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:19 pm
YUL
-
SEA
21h 49m1 stop
$277WestJet
Thu, Jan 29 - Tue, Feb 3
WestJet Logo
7:05 am - 12:40 am
SEA
-
YUL
14h 35m2 stops
WestJet Logo
6:45 am - 1:08 pm
YUL
-
SEA
9h 23m1 stop
$279WestJet
Thu, May 14 - Wed, May 20
Air Canada Logo
3:40 pm - 7:10 am
SEA
-
YUL
12h 30m2 stops
Air Canada Logo
9:10 am - 7:16 pm
YUL
-
SEA
13h 06m2 stops
$281Air Canada
Mon, Feb 2 - Tue, Feb 3
WestJet Logo
3:10 pm - 3:13 pm
SEA
-
YUL
21h 03m1 stop
WestJet Logo
5:30 pm - 8:28 pm
YUL
-
SEA
29h 58m1 stop
$291WestJet
Thu, Apr 23 - Thu, Apr 30

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
May 14
SEA7:05 amSeattle/Tacoma Intl
14h 37m
1 stop
YUL12:42 amMontreal Pierre Elliott Trudeau Intl
May 20
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
9h 23m
1 stop
SEA1:08 pmSeattle/Tacoma Intl
$265
Find similar
WestJet
Jan 25
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Feb 2
YUL4:15 pmMontreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$266
Find similar
WestJet
Jan 25
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Feb 2
YUL4:15 pmMontreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$276
Find similar

United Airlines flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best United Airlines deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
United Airlines
Dec 16
SEA5:00 amSeattle/Tacoma Intl
8h 58m
1 stop
YUL4:58 pmMontreal Pierre Elliott Trudeau Intl
Dec 17
YUL5:25 pmMontreal Pierre Elliott Trudeau Intl
19h 31m
1 stop
SEA9:56 amSeattle/Tacoma Intl
$442
Find similar
United Airlines
Dec 16
SEA1:05 pmSeattle/Tacoma Intl
18h 05m
2 stops
YUL10:10 amMontreal Pierre Elliott Trudeau Intl
Dec 17
YUL5:25 pmMontreal Pierre Elliott Trudeau Intl
19h 31m
1 stop
SEA9:56 amSeattle/Tacoma Intl
$452
Find similar
United Airlines
Dec 16
SEA7:34 pmSeattle/Tacoma Intl
11h 36m
2 stops
YUL10:10 amMontreal Pierre Elliott Trudeau Intl
Dec 17
YUL1:10 pmMontreal Pierre Elliott Trudeau Intl
23h 46m
2 stops
SEA9:56 amSeattle/Tacoma Intl
$457
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 December 4, 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

Sat 1/24

10:05 am-9:00 pm

1 stop7h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

2:25 pm-10:06 pm

2 stops10h 41m

$254

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 1/24

3:40 pm-7:10 am

2 stops12h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

2:25 pm-10:06 pm

2 stops10h 41m

$257

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 5/14

7:05 am-12:42 am

1 stop14h 37m

Montreal Pierre Elliott Trudeau Intl

Wed 5/20

6:45 am-1:08 pm

1 stop9h 23m

$265

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 1/25

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

4:15 pm-2:19 pm

1 stop25h 04m

$266

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 2/2

8:00 pm-6:44 am

1 stop7h 44m

Montreal Pierre Elliott Trudeau Intl

Tue 2/3

9:10 am-7:16 pm

2 stops13h 06m

$274

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 1/25

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

4:15 pm-2:19 pm

1 stop25h 04m

$276

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 1/29

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 2/3

7:30 pm-2:19 pm

1 stop21h 49m

$277

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 5/14

7:05 am-12:40 am

2 stops14h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 5/20

6:45 am-1:08 pm

1 stop9h 23m

$279

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 2/2

3:40 pm-7:10 am

2 stops12h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 2/3

9:10 am-7:16 pm

2 stops13h 06m

$281

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/23

3:10 pm-3:13 pm

1 stop21h 03m

Montreal Pierre Elliott Trudeau Intl

Thu 4/30

5:30 pm-8:28 pm

1 stop29h 58m

$291

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 $650. Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $818. 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 $728.

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 $578 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 32% 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 December 2025, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 3% 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

$517

Fastest flight time

5h 09m

Direct flights

Wed, Fri, Sat and Sun
The best flight deal from Seattle to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $517
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 on Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
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 7h 44m 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
9,066 reviews
Search United Airlines flights
Air CanadaPriceFrom $273Free CancellationRating
7.1
10,500 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,193 reviews
Search WestJet flights
DeltaPriceFrom $354Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $493Free CancellationRating
7.2
11,047 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
Longueuil
Brossard
Trois-Rivières
Magog
Cornwall
Boucherville
Sherbrooke
Drummondville
Saint-Jean-sur-Richelieu
Montebello
Bromont
Saint-Sauveur
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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