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Cheap flights from Montreal to Seattle from $187

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:45 am - 6:45 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
WestJet Logo
7:35 pm - 7:05 amSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
$301WestJet
Sat, Sep 19 - Tue, Sep 22
WestJet Logo
6:45 am - 6:45 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
WestJet Logo
7:35 pm - 7:05 amSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
$305WestJet
Tue, Sep 15 - Tue, Sep 22
WestJet Logo
6:45 am - 6:45 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
WestJet Logo
7:35 pm - 7:05 amSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
$305WestJet
Sat, Sep 26 - Fri, Oct 2
Delta Logo
7:00 am - 4:07 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:43 am - 11:27 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 44m1 stop Detroit Metropolitan Wayne County
$339Delta
Sat, Sep 19 - Tue, Sep 22
Air Canada Logo
6:00 pm - 10:47 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
7h 47m1 stop Vancouver Intl
Air Canada Logo
8:40 am - 7:35 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
7h 55m1 stop Vancouver Intl
$351Air Canada
Wed, Oct 21 - Wed, Oct 28
American Airlines Logo
1:06 pm - 9:36 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 30m2 stops Philadelphia Chicago O'Hare Intl
American Airlines Logo
6:18 am - 9:42 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 24m2 stops Chicago O'Hare Intl Philadelphia
$352American Airlines
Tue, Sep 15 - Tue, Sep 22
Air Canada Logo
9:30 am - 9:04 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 34m2 stops Ottawa Toronto Pearson Intl
Air Canada Logo
3:15 pm - 7:10 amSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 55m2 stops Vancouver Intl Calgary
$363Air Canada
Wed, Oct 21 - Wed, Oct 28
American Airlines Logo
5:34 pm - 12:36 amYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
10h 02m1 stop Chicago O'Hare Intl
American Airlines Logo
8:24 am - 9:30 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 06m1 stop Philadelphia
$370American Airlines
Wed, Oct 7 - Sat, Oct 10
Delta Logo
7:00 am - 4:45 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 45m1 stop Minneapolis St Paul
Delta Logo
8:59 am - 11:50 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
11h 51m1 stop Atlanta Hartsfield-Jackson
$405Delta
Tue, Sep 22 - Wed, Sep 30
Delta Logo
7:00 am - 4:07 pmYUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
9:43 am - 11:27 pmSEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 44m1 stop Detroit Metropolitan Wayne County
$411Delta
Fri, Sep 18 - Sun, Sep 27

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WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets
WestJet
Sep 19
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Sep 22
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
$301
WestJet
Sep 10
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Sep 16
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
$302
WestJet
Sep 15
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Sep 22
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
$305

Delta flights from Montreal to Seattle

Our best Delta deals on Montreal to Seattle flight tickets
Delta
Sep 18
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
12h 07m
1 stop
SEA4:07 pmSeattle/Tacoma Intl
Sep 27
SEA9:43 amSeattle/Tacoma Intl
10h 44m
1 stop
YUL11:27 pmMontreal Pierre Elliott Trudeau Intl
$411
Delta
Sep 15
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
11h 49m
1 stop
SEA2:49 pmSeattle/Tacoma Intl
Sep 22
SEA9:43 amSeattle/Tacoma Intl
10h 44m
1 stop
YUL11:27 pmMontreal Pierre Elliott Trudeau Intl
$419

momondo Fare Finder

 
Use the filters below to find and compare flights from Montreal to Seattle that are best for you.

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Price

Cheapest round-trip

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 9/19

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-7:05 am

1 stop8h 30m

$301

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 9/15

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-7:05 am

1 stop8h 30m

$305

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 9/26

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Fri 10/2

7:35 pm-7:05 am

1 stop8h 30m

$305

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 9/19

7:00 am-4:07 pm

1 stop12h 07m

Seattle/Tacoma Intl

Tue 9/22

9:43 am-11:27 pm

1 stop10h 44m

$339
Quickest round-trip

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

6:00 pm-10:47 pm

1 stop7h 47m

Seattle/Tacoma Intl

Wed 10/28

8:40 am-7:35 pm

1 stop7h 55m

$351

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 9/15

1:06 pm-9:36 pm

2 stops11h 30m

Seattle/Tacoma Intl

Tue 9/22

6:18 am-9:42 pm

2 stops12h 24m

$352

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

9:30 am-9:04 pm

2 stops14h 34m

Seattle/Tacoma Intl

Wed 10/28

3:15 pm-7:10 am

2 stops12h 55m

$363

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/7

5:34 pm-12:36 am

1 stop10h 02m

Seattle/Tacoma Intl

Sat 10/10

8:24 am-9:30 pm

1 stop10h 06m

$370

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 9/22

7:00 am-4:45 pm

1 stop12h 45m

Seattle/Tacoma Intl

Wed 9/30

8:59 am-11:50 pm

1 stop11h 51m

$405

MontrealSeattle

YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 9/18

7:00 am-4:07 pm

1 stop12h 07m

Seattle/Tacoma Intl

Sun 9/27

9:43 am-11:27 pm

1 stop10h 44m

$411

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 Seattle from

How to get the cheapest flight ticket from Montreal to Seattle

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 Montreal and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from $398 to $537.
The lowest price recently found on this route was $301.

What is the cheapest month to fly to Seattle?

In general, March is the cheapest month to fly from Montreal to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $457. If you don’t want to visit Seattle in March, then you should wait until April to fly from Montreal, when ticket prices are also cheap, with an average price of $461.

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

On average, the least expensive day to fly to Seattle from Montreal is on a Thursday. momondo users have found tickets for Thursday departures for as low as $532. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Montreal because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $932.

What is the cheapest Montreal to Seattle/Tacoma Intl flight route?

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

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

You are more likely to see cheaper flights to Seattle from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $503 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Montreal for as low as $304 on momondo.

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

There is only 1 cabin class available to choose from on Montreal to Seattle 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 Montreal to Seattle flights?

You could potentially save up to 7% on your flight if you consider stops on a Montreal to Seattle flight.

How have Montreal to Seattle flight prices changed over time?

As of September 2026, prices for Montreal to Seattle flights are approximately 18% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to Seattle

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

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

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

Best Price Found

$187

Fastest flight time

8h 53m

Direct flights

None
The best one-way flight to Seattle from Montreal in the past 72 hours is $187. The best round-trip flight deal from Montreal to Seattle found on momondo in the last 72 hours is $301.
The fastest flight from Montreal to Seattle takes 8h 53m
There are no direct flights from Montreal to Seattle. There are no popular flight routes from Montreal to Seattle.
Search flight deals

Frequently asked questions about flying from Montreal to Seattle

  • How far is Montreal to Seattle/Tacoma Intl by plane?

    Montreal and Seattle/Tacoma Intl are 2282.0 mi apart from one another. Typically, this will take 8h 53m by plane in normal conditions.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma 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 Seattle/Tacoma 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 Montreal to Seattle?

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

Best airlines flying from Montreal to Seattle

Compare and see reviews for airlines that fly from Montreal to Seattle with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom $293Free CancellationRating
7.2
3,445 reviews
Search WestJet flights
Air CanadaPriceFrom $326Free CancellationRating
7.1
11,579 reviews
Search Air Canada flights
DeltaPriceFrom $388Free CancellationRating
7.8
8,554 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Kent
Olympia
Redmond
Lakewood
Federal Way
Fife
Tukwila
Puyallup
Lynnwood
Cle Elum
Marysville
Kirkland
Centralia
Lacey
Shoreline

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Montreal.

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

Yes. momondo enables you to select and highlight flights to Seattle from Montreal with this policy.

How can momondo help me find flights from Montreal to Seattle?

Once all potential Montreal to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Montreal to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Montreal to Seattle 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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