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Cheap flights from Seattle to Montreal from $181

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 10/19. 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
1 adult, Economy, 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
$433WestJet
Fri, Sep 18 - Mon, Sep 21
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
$434WestJet
Sat, Sep 12 - Sun, Sep 20
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
$436WestJet
Sat, Sep 5 - Wed, Sep 9
WestJet Logo
10:30 am - 12:25 am
SEA
-
YUL
10h 55m
2 stops
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
$440WestJet
Fri, Sep 18 - Mon, Sep 21
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
$443WestJet
Mon, Aug 24 - Fri, Aug 28
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
4:15 pm - 1:38 pm
YUL
-
SEA
24h 23m
1 stop
$447WestJet
Mon, Oct 19 - Fri, Nov 6
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
$448WestJet
Wed, Oct 14 - Wed, Oct 21
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
$450WestJet
Thu, Jul 9 - Tue, Jul 14
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
$453WestJet
Fri, Jul 10 - Sat, Jul 18
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
$454WestJet
Mon, Sep 7 - Sat, Sep 12

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
Sep 18
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Sep 21
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$433
WestJet
Jul 19
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Jul 26
YUL7:15 amMontreal Pierre Elliott Trudeau Intl
29h 25m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$434
WestJet
Sep 5
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Sep 9
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$436

American Airlines flights from Seattle to Montreal

Our best American Airlines deals on Seattle to Montreal flight tickets
American Airlines
Jul 8
SEA3:28 pmSeattle/Tacoma Intl
17h 15m
1 stop
YUL11:43 amMontreal Pierre Elliott Trudeau Intl
Jul 14
YUL7:51 amMontreal Pierre Elliott Trudeau Intl
18h 05m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
$473
American Airlines
Aug 19
SEA11:56 pmSeattle/Tacoma Intl
9h 31m
2 stops
YUL12:27 pmMontreal Pierre Elliott Trudeau Intl
Aug 24
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
18h 55m
1 stop
SEA9:29 amSeattle/Tacoma Intl
$488
American Airlines
Sep 19
SEA8:24 amSeattle/Tacoma Intl
11h 28m
1 stop
YUL10:52 pmMontreal Pierre Elliott Trudeau Intl
Sep 28
YUL1:06 pmMontreal Pierre Elliott Trudeau Intl
10h 59m
1 stop
SEA9:05 pmSeattle/Tacoma Intl
$497

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 June 4, 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

Cheapest round-trip
Quickest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 9/18

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 9/21

6:45 am-6:45 pm

2 stops15h 00m

$433

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 9/12

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 9/20

6:45 am-6:45 pm

2 stops15h 00m

$434

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 9/5

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

6:45 am-6:45 pm

2 stops15h 00m

$436

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 9/18

10:30 am-12:25 am

2 stops10h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 9/21

6:45 am-6:45 pm

2 stops15h 00m

$440

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 8/24

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 8/28

6:45 am-6:45 pm

2 stops15h 00m

$443

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 10/19

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 11/6

4:15 pm-1:38 pm

1 stop24h 23m

$447

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 10/14

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

6:45 am-6:45 pm

2 stops15h 00m

$448

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 7/9

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 7/14

6:45 am-6:45 pm

2 stops15h 00m

$450

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 7/10

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 7/18

8:00 pm-9:40 am

1 stop16h 40m

$453

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/7

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 9/12

8:00 pm-9:40 am

1 stop16h 40m

$454

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 May. Flight prices, which tend to average around $151, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of May, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around $155.

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

The cheapest day to depart from Seattle to Montreal is on a Wednesday when prices can be found for as low as $593. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $835. 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 from Seattle 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 $708 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 $270 on momondo.

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

There are 4 cabin classes available to choose from on Seattle 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 June 2026, prices for Seattle to Montreal flights are approximately 5% 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

$279

Fastest flight time

7h 19m

Direct flights

None
The best one-way flight to Montreal from Seattle in the past 72 hours is $279. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $3,219.
The fastest flight from Seattle to Montreal takes 7h 19m
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

Frequently asked questions about flying from Seattle to Montreal

  • 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 7h 19m 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
United AirlinesPriceFrom $265Free CancellationRating
7.4
9,774 reviews
Search United Airlines flights
WestJetPriceFrom $281Free CancellationRating
7.2
3,350 reviews
Search WestJet flights
DeltaPriceFrom $310Free CancellationRating
7.8
8,395 reviews
Search Delta flights
Air CanadaPriceFrom $335Free CancellationRating
7.1
11,126 reviews
Search Air Canada 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