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Cheap flights from Seattle to Montreal from $122

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 5/1. 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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Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$298WestJet
Wed, May 6 - Tue, May 12
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
7:20 pm - 9:40 am
YUL
-
SEA
17h 20m
2 stops
$304WestJet
Wed, May 6 - Thu, May 14
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
$306WestJet
Tue, May 5 - Tue, May 12
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 9:40 am
YUL
-
SEA
16h 40m
1 stop
$311WestJet
Sat, May 23 - Wed, May 27
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 9:40 am
YUL
-
SEA
16h 40m
1 stop
$312WestJet
Wed, May 6 - Mon, May 11
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 9:40 am
YUL
-
SEA
16h 40m
1 stop
$314WestJet
Wed, Apr 29 - Sun, May 3
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
7:20 pm - 9:40 am
YUL
-
SEA
17h 20m
2 stops
$315WestJet
Tue, May 26 - Mon, Jun 1
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 9:40 am
YUL
-
SEA
16h 40m
1 stop
$317WestJet
Tue, May 12 - Mon, May 18
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
12:15 pm - 6:45 pm
YUL
-
SEA
33h 30m
2 stops
$318WestJet
Thu, Apr 30 - Sun, May 3
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 9:40 am
YUL
-
SEA
16h 40m
1 stop
$320WestJet
Tue, May 5 - Mon, May 11

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
May 6
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
May 12
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$298
WestJet
May 6
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
May 14
YUL7:20 pmMontreal Pierre Elliott Trudeau Intl
17h 20m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$304
WestJet
May 5
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
May 12
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$306

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
Mar 1
SEA5:40 amSeattle/Tacoma Intl
8h 20m
1 stop
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
Mar 7
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 31m
1 stop
SEA3:01 pmSeattle/Tacoma Intl
$483
Air Canada
Mar 2
SEA8:00 pmSeattle/Tacoma Intl
7h 44m
1 stop
YUL6:44 amMontreal Pierre Elliott Trudeau Intl
Mar 3
YUL8:45 amMontreal Pierre Elliott Trudeau Intl
16h 31m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$486
Air Canada
Mar 2
SEA5:40 amSeattle/Tacoma Intl
8h 20m
1 stop
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
Mar 5
YUL3:35 pmMontreal Pierre Elliott Trudeau Intl
10h 21m
2 stops
SEA10:56 pmSeattle/Tacoma Intl
$489

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Montreal 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 February 17, 2026.
Use the filters below to find and compare flights from Seattle to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 5/6

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 5/12

6:45 am-6:45 pm

2 stops15h 00m

$298

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 5/6

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 5/14

7:20 pm-9:40 am

2 stops17h 20m

$304

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 5/5

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 5/12

6:45 am-6:45 pm

2 stops15h 00m

$306

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 5/23

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 5/27

8:00 pm-9:40 am

1 stop16h 40m

$311

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 5/6

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/11

8:00 pm-9:40 am

1 stop16h 40m

$312

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 5/3

8:00 pm-9:40 am

1 stop16h 40m

$314

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 5/26

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 6/1

7:20 pm-9:40 am

2 stops17h 20m

$315

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 5/12

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/18

8:00 pm-9:40 am

1 stop16h 40m

$317

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/30

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 5/3

12:15 pm-6:45 pm

2 stops33h 30m

$318

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 5/5

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/11

8:00 pm-9:40 am

1 stop16h 40m

$320

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

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?

What is the cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from Seattle is in September. Flight prices, which tend to average around $482, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of September, then departing from Seattle during the month August is also very affordable. Most momondo users find prices during this month for around $492.

What is the cheapest day to depart on your flight to Montreal?

The cheapest day to depart from Seattle to Montreal is on a Monday when prices can be found for as low as $640. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $828. 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 flight route?

Fly from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl for the best Seattle/Tacoma Intl - Montreal flight prices

How far in advance should I book a flight to Montreal?

You are more likely to see cheaper flights to Montreal from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around $639 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from Seattle for as low as $277 on momondo.

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

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

You could potentially save up to 41% on your flight if you consider stops on a Seattle to Montreal flight.

How have Seattle to Montreal flight prices changed over time?

As of February 2026, prices for Seattle to Montreal flights are approximately 51% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Montreal

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Montreal according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Montreal (SEA to YMQ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Montreal

Best Price Found

$257

Fastest flight time

8h 15m

Direct flights

None
The best one-way flight to Montreal from Seattle in the past 72 hours is $257. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $644.
The fastest flight from Seattle to Montreal takes 8h 15m
There are no direct flights from Seattle to Montreal. 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 by plane?

    The straight-line distance from Seattle/Tacoma Intl to Montreal is 2282.0 mi. Typically, this will take 8h 15m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Montreal?

    Prices for flights from Seattle/Tacoma Intl Airport to Montreal are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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.

  • What documentation or ID do you need to fly to Montreal?

    The required travel and health documents for your Montreal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Seattle to Montreal?

  • What is the most popular airline from Seattle to Montreal?

Best airlines flying from Seattle to Montreal

Compare and see reviews for airlines that fly from Seattle to Montreal with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom $161Free CancellationRating
7.2
3,266 reviews
Search WestJet flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
9,308 reviews
Search United Airlines flights
Air CanadaPriceFrom $259Free CancellationRating
7.1
10,723 reviews
Search Air Canada flights
DeltaPriceFrom $310Free CancellationRating
7.9
8,205 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Montreal?

Finding the right flight to Montreal from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montreal quick and easy, saving you time and money.

Can I find flights from Seattle to Montreal with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Montreal flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Seattle to Montreal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Airports listed have a maximum distance of 9.4 mi from Montreal
Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport