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Cheap flights from Seattle to Montreal from $135

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 6/7. 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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Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
WestJet Logo
4:15 pm - 2:19 pm
YUL
-
SEA
25h 04m
1 stop
$324WestJet
Thu, Apr 9 - Thu, Apr 16
Multiple Airlines Logo
9:40 pm - 12:38 am
SEA
-
YUL
23h 58m
2 stops
Multiple Airlines Logo
7:00 am - 2:19 pm
YUL
-
SEA
10h 19m
1 stop
$325Multiple Airlines
Mon, Mar 30 - Sun, Apr 5
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
WestJet Logo
8:00 pm - 2:19 pm
YUL
-
SEA
21h 19m
2 stops
$327WestJet
Thu, Apr 9 - Thu, Apr 16
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
$344WestJet
Wed, Jun 3 - Sat, Jun 6
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
$346WestJet
Mon, May 25 - Sun, May 31
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
8:00 pm - 6:45 pm
YUL
-
SEA
25h 45m
1 stop
$350WestJet
Thu, May 28 - Thu, Jun 4
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
$352WestJet
Sun, May 31 - Mon, Jun 8
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
WestJet Logo
7:15 am - 6:45 pm
YUL
-
SEA
14h 30m
1 stop
$353WestJet
Fri, May 29 - Fri, Jun 5
WestJet Logo
3:10 pm - 3:13 pm
SEA
-
YUL
21h 03m
1 stop
WestJet Logo
6:45 am - 2:19 pm
YUL
-
SEA
34h 34m
2 stops
$354WestJet
Thu, Apr 16 - Tue, Apr 21
Multiple Airlines Logo
8:09 am - 12:38 am
SEA
-
YUL
13h 29m
1 stop
Multiple Airlines Logo
7:00 am - 2:19 pm
YUL
-
SEA
10h 19m
1 stop
$355Multiple Airlines
Mon, Mar 30 - Sun, Apr 5

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
Apr 9
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Apr 16
YUL4:15 pmMontreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$324
WestJet
Apr 9
SEA3:10 pmSeattle/Tacoma Intl
12h 55m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Apr 16
YUL8:00 pmMontreal Pierre Elliott Trudeau Intl
21h 19m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$327
WestJet
Jun 3
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
Jun 6
YUL8:00 pmMontreal Pierre Elliott Trudeau Intl
16h 40m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$344

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
Mar 7
SEA3:40 pmSeattle/Tacoma Intl
12h 13m
2 stops
YUL6:53 amMontreal Pierre Elliott Trudeau Intl
Mar 12
YUL1:25 pmMontreal Pierre Elliott Trudeau Intl
8h 51m
1 stop
SEA7:16 pmSeattle/Tacoma Intl
$689
Air Canada
Mar 7
SEA3:40 pmSeattle/Tacoma Intl
12h 13m
2 stops
YUL6:53 amMontreal Pierre Elliott Trudeau Intl
Mar 12
YUL8:40 amMontreal Pierre Elliott Trudeau Intl
13h 36m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$695
Air Canada
Mar 7
SEA3:40 pmSeattle/Tacoma Intl
12h 13m
2 stops
YUL6:53 amMontreal Pierre Elliott Trudeau Intl
Mar 16
YUL4:10 pmMontreal Pierre Elliott Trudeau Intl
9h 06m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$698

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 22, 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

Thu 4/9

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Thu 4/16

4:15 pm-2:19 pm

1 stop25h 04m

$324

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 3/30

9:40 pm-12:38 am

2 stops23h 58m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

7:00 am-2:19 pm

1 stop10h 19m

$325

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/9

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Thu 4/16

8:00 pm-2:19 pm

2 stops21h 19m

$327

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 6/3

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

8:00 pm-9:40 am

1 stop16h 40m

$344

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 5/25

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 5/31

8:00 pm-9:40 am

1 stop16h 40m

$346

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 5/28

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 6/4

8:00 pm-6:45 pm

1 stop25h 45m

$350

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 5/31

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 6/8

8:00 pm-9:40 am

1 stop16h 40m

$352

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/29

7:35 pm-7:05 am

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 6/5

7:15 am-6:45 pm

1 stop14h 30m

$353

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 4/16

3:10 pm-3:13 pm

1 stop21h 03m

Montreal Pierre Elliott Trudeau Intl

Tue 4/21

6:45 am-2:19 pm

2 stops34h 34m

$354

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 3/30

8:09 am-12:38 am

1 stop13h 29m

Montreal Pierre Elliott Trudeau Intl

Sun 4/5

7:00 am-2:19 pm

1 stop10h 19m

$355

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 $651. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $830. 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

7h 59m

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 $743.
The fastest flight from Seattle to Montreal takes 7h 59m
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 7h 59m 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
3,270 reviews
Search WestJet flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
9,341 reviews
Search United Airlines flights
Air CanadaPriceFrom $277Free CancellationRating
7.1
10,738 reviews
Search Air Canada flights
DeltaPriceFrom $310Free CancellationRating
7.9
8,240 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