Cheap flights from Seattle to Montreal from $136

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 10/15. 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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Find the cheapest flights from Seattle to Montreal (SEA-YMQ)

Cheap round-trip flights

WestJet Logo
2:05 pm - 12:41 amSEA-YUL
7h 36m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$328WestJet
Find Deal
Sun, Oct 12 - Thu, Oct 16
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$336WestJet
Find Deal
Wed, Oct 1 - Thu, Oct 16
 Logo
8:40 am - 2:10 pmSEA-YUL
26h 30m1 stop
 Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
Mon, Sep 29 - Thu, Oct 16
WestJet Logo
8:40 am - 12:27 amSEA-YUL
12h 47m2 stops
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$341WestJet
Find Deal
Wed, Oct 1 - Thu, Oct 2
Air Canada Logo
5:30 am - 4:36 pmSEA-YUL
8h 06m1 stop
Air Canada Logo
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
$345Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
Air Canada Logo
7:15 am - 3:28 pmSEA-YUL
5h 13mnonstop
Air Canada Logo
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
$346Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
 Logo
7:55 am - 2:09 pmSEA-YUL
27h 14m1 stop
 Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
Wed, Sep 17 - Tue, Sep 23
 Logo
8:40 am - 2:10 pmSEA-YUL
26h 30m1 stop
 Logo
10:00 am - 7:05 pmYUL-SEA
12h 05m2 stops
Mon, Sep 29 - Wed, Oct 15
Air Canada Logo
2:55 pm - 7:10 amSEA-YUL
13h 15m2 stops
Air Canada Logo
6:00 am - 10:59 amYUL-SEA
7h 59m1 stop
$356Air Canada
Find Deal
Sun, Oct 5 - Mon, Oct 13
American Airlines Logo
11:05 pm - 12:24 pmSEA-YUL
10h 19m1 stop
American Airlines Logo
7:25 am - 6:28 pmYUL-SEA
14h 03m1 stop
$408American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
Oct 12
SEA2:05 pmSeattle/Tacoma Intl
7h 36m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 16
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
WestJet
Oct 1
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 16
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
WestJet
Oct 1
SEA8:40 amSeattle/Tacoma Intl
12h 47m
2 stops
YUL12:27 amMontreal Pierre Elliott Trudeau Intl
Oct 2
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
Oct 5
SEA5:30 amSeattle/Tacoma Intl
8h 06m
1 stop
YUL4:36 pmMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 pmSeattle/Tacoma Intl
Air Canada
Oct 5
SEA7:15 amSeattle/Tacoma Intl
5h 13m
YUL3:28 pmMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 pmSeattle/Tacoma Intl
Air Canada
Oct 5
SEA2:55 pmSeattle/Tacoma Intl
13h 15m
2 stops
YUL7:10 amMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
7h 59m
1 stop
SEA10:59 amSeattle/Tacoma Intl

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 August 25, 2025.
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

Sun 10/12

2:05 pm-12:41 am

1 stop7h 36m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$328

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 10/1

1:50 pm-12:41 am

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$336

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/29

8:40 am-2:10 pm

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

7:00 am-12:59 pm

1 stop8h 59m

$339

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 10/1

8:40 am-12:27 am

2 stops12h 47m

Montreal Pierre Elliott Trudeau Intl

Thu 10/2

7:00 am-12:59 pm

1 stop8h 59m

$341

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

5:30 am-4:36 pm

1 stop8h 06m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

4:45 pm-7:31 pm

Nonstop5h 46m

$345

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

7:15 am-3:28 pm

Nonstop5h 13m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

4:45 pm-7:31 pm

Nonstop5h 46m

$346

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 9/17

7:55 am-2:09 pm

1 stop27h 14m

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

7:00 am-12:59 pm

1 stop8h 59m

$352

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/29

8:40 am-2:10 pm

1 stop26h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 10/15

10:00 am-7:05 pm

2 stops12h 05m

$355

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 10/5

2:55 pm-7:10 am

2 stops13h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

6:00 am-10:59 am

1 stop7h 59m

$356

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 9/20

11:05 pm-12:24 pm

1 stop10h 19m

Montreal Pierre Elliott Trudeau Intl

Sat 9/27

7:25 am-6:28 pm

1 stop14h 03m

$408

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 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 $493, 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 June is also very affordable. Most momondo users find prices during this month for around $528.

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 $687. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $798. 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?

Our most recent data shows that the best time of day to fly to Montreal is in the afternoon. Flights from Seattle to Montreal during this time can be as low as $305. In the morning is when there is more demand to fly to Montreal, so prices are often more expensive at around $747 per ticket.

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 $557 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 $395 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?

No. A direct flight is the cheapest option for a flight between Seattle to Montreal.

How have Seattle to Montreal flight prices changed over time?

As of August 2025, prices for Seattle to Montreal flights are approximately 35% 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

$194

Fastest flight time

5h 09m

Direct flights

Every day

Airports in Montreal

1 airport
The best one-way flight to Montreal from Seattle in the past 72 hours is $194. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $482.
The fastest flight from Seattle to Montreal takes 5h 09m
Direct flights go from Seattle to Montreal every day.
There is 1 airport near Montreal: Montreal Pierre Elliott Trudeau Intl (YUL)
  • 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 5h 13m 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 $228Free CancellationRating
7.4
8,940 reviews
Search United Airlines flights
Air CanadaPriceFrom $272Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,050 reviews
Search WestJet flights
DeltaPriceFrom $455Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $465Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • United Airlines Flights From Seattle to Montreal

    Across 7 United Airlines flights from Seattle to Montreal this week, the average price was $618, with the best United Airlines deals starting from $228 round-trip. 8,940 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • Air Canada Flights From Seattle to Montreal

    The best Air Canada deal for Seattle to Montreal flight tickets found on momondo in the last 72 hours was $272, round-trip. It should be noted that an average Air Canada flight deal for this route in this time was higher, at $607 round-trip. Air Canada operates 7 flights out of Seattle into Montreal in an average week, so prices vary by time and availability. 10,000 Air Canada reviews by users on momondo have scored the airline at 7.1/10.

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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1 adult
Sat 8/30
Sat 9/6

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