Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 270

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle departing on 3/10. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
C$ 442WestJet
Tue, 15 Sep - Tue, 22 Sep
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
WestJet Logo
10:30 a.m. - 12:25 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 55m2 stops Calgary Toronto Pearson Intl
C$ 457WestJet
Sun, 4 Oct - Wed, 7 Oct
Air Canada Logo
6:00 p.m. - 10:42 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
7h 42m1 stop Vancouver Intl
Air Canada Logo
5:40 a.m. - 4:54 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 14m1 stop Vancouver Intl
C$ 461Air Canada
Sat, 3 Oct - Sat, 10 Oct
Air Canada Logo
6:00 p.m. - 10:47 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
7h 47m1 stop Vancouver Intl
Air Canada Logo
5:40 a.m. - 4:54 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 14m1 stop Vancouver Intl
C$ 475Air Canada
Wed, 30 Sep - Wed, 14 Oct
Delta Logo
6:00 a.m. - 2:49 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 49m1 stop Detroit Metropolitan Wayne County
Delta Logo
9:43 a.m. - 11:27 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 44m1 stop Detroit Metropolitan Wayne County
C$ 482Delta
Wed, 9 Sep - Wed, 16 Sep
Delta Logo
6:00 a.m. - 2:49 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 49m1 stop Detroit Metropolitan Wayne County
Delta Logo
8:59 a.m. - 11:50 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
11h 51m1 stop Atlanta Hartsfield-Jackson
C$ 482Delta
Wed, 9 Sep - Tue, 15 Sep
American Airlines Logo
12:31 p.m. - 9:52 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 21m2 stops Chicago O'Hare Intl Dallas/Fort Worth
American Airlines Logo
6:12 a.m. - 9:30 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 18m2 stops Chicago O'Hare Intl Philadelphia
C$ 502American Airlines
Wed, 30 Sep - Wed, 14 Oct
American Airlines Logo
7:29 a.m. - 4:42 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
12h 13m2 stops Charlotte Douglas Dallas/Fort Worth
American Airlines Logo
6:18 a.m. - 9:42 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 24m2 stops Chicago O'Hare Intl Philadelphia
C$ 502American Airlines
Tue, 15 Sep - Tue, 22 Sep
United Airlines Logo
7:00 a.m. - 6:09 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 09m2 stops Newark Denver Intl
United Airlines Logo
5:07 a.m. - 9:40 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
13h 33m2 stops Denver Intl Newark
C$ 559United Airlines
Sat, 5 Dec - Tue, 8 Dec
United Airlines Logo
6:10 a.m. - 11:40 a.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
8h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
5:07 a.m. - 9:40 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
13h 33m2 stops Denver Intl Newark
C$ 559United Airlines
Sat, 5 Dec - Tue, 8 Dec

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Air Canada flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight tickets
Air Canada
3 Oct
YUL6:00 p.m.Montreal Pierre Elliott Trudeau Intl
7h 42m
1 stop
SEA10:42 p.m.Seattle/Tacoma Intl
10 Oct
SEA5:40 a.m.Seattle/Tacoma Intl
8h 14m
1 stop
YUL4:54 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 461
Air Canada
30 Sep
YUL6:00 p.m.Montreal Pierre Elliott Trudeau Intl
7h 47m
1 stop
SEA10:47 p.m.Seattle/Tacoma Intl
14 Oct
SEA5:40 a.m.Seattle/Tacoma Intl
8h 14m
1 stop
YUL4:54 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 475
Air Canada
8 Jan
YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl
10h 07m
1 stop
SEA2:37 p.m.Seattle/Tacoma Intl
16 Jan
SEA10:10 a.m.Seattle/Tacoma Intl
7h 23m
1 stop
YUL8:33 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 479

WestJet flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Our best WestJet deals on Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight tickets
WestJet
15 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
22 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 442
WestJet
11 Sep
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
25h 45m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
13 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 457
WestJet
3 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
10 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 458

momondo Fare Finder

 
Customize your flight search to find flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle 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 96,600 searches. Data last updated 9 August 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

6:45 a.m.-6:45 p.m.

2 stops15h 00m

Seattle/Tacoma Intl

Tue 22/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 442

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 4/10

6:45 a.m.-6:45 p.m.

2 stops15h 00m

Seattle/Tacoma Intl

Wed 7/10

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 457
Quickest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

6:00 p.m.-10:42 p.m.

1 stop7h 42m

Seattle/Tacoma Intl

Sat 10/10

5:40 a.m.-4:54 p.m.

1 stop8h 14m

C$ 461

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

6:00 p.m.-10:47 p.m.

1 stop7h 47m

Seattle/Tacoma Intl

Wed 14/10

5:40 a.m.-4:54 p.m.

1 stop8h 14m

C$ 475

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

6:00 a.m.-2:49 p.m.

1 stop11h 49m

Seattle/Tacoma Intl

Wed 16/9

9:43 a.m.-11:27 p.m.

1 stop10h 44m

C$ 482

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 9/9

6:00 a.m.-2:49 p.m.

1 stop11h 49m

Seattle/Tacoma Intl

Tue 15/9

8:59 a.m.-11:50 p.m.

1 stop11h 51m

C$ 482

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

12:31 p.m.-9:52 p.m.

2 stops12h 21m

Seattle/Tacoma Intl

Wed 14/10

6:12 a.m.-9:30 p.m.

2 stops12h 18m

C$ 502

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

7:29 a.m.-4:42 p.m.

2 stops12h 13m

Seattle/Tacoma Intl

Tue 22/9

6:18 a.m.-9:42 p.m.

2 stops12h 24m

C$ 502

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

7:00 a.m.-6:09 p.m.

2 stops14h 09m

Seattle/Tacoma Intl

Tue 8/12

5:07 a.m.-9:40 p.m.

2 stops13h 33m

C$ 559

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

6:10 a.m.-11:40 a.m.

1 stop8h 30m

Seattle/Tacoma Intl

Tue 8/12

5:07 a.m.-9:40 p.m.

2 stops13h 33m

C$ 559

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 578 to C$ 856.
The lowest price recently found on this route was C$ 442.

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 602.

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

Our data shows that Wednesday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 580. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 960. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

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

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

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

You are more likely to see cheaper flights to Seattle from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 693 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Montreal Pierre Elliott Trudeau Intl Airport for as low as C$ 424 on momondo.

What cabin class options are available on Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights?

There is only 1 cabin class available to choose from on Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Seattle flights?

No. A direct flight is the cheapest option for a flight between Montreal Pierre Elliott Trudeau Intl Airport to Seattle.

How have Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight prices changed over time?

As of August 2026, prices for Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights are approximately 38% more expensive when compared to flights at the same time last year.

When to book flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

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

Cheap Montreal Pierre Elliott Trudeau Intl Airport to Seattle (YUL to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Fastest flight time

7h 26m

Direct flights

None
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle takes 7h 26m
There are no direct flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle. There are no popular flight routes from Montreal Pierre Elliott Trudeau Intl Airport to Seattle.
Search flight deals

Frequently asked questions about flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

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

    Seattle/Tacoma Intl is 3660.5 km away from Montreal Pierre Elliott Trudeau Intl. In terms of flight time, this usually takes a little over 7h 26m.

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

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

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

  • How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Seattle/Tacoma Intl Airport.

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

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

  • What is the most popular airline from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom C$ 283Free CancellationRating
7.8
8,496 reviews
Search Delta flights
WestJetPriceFrom C$ 412Free CancellationRating
7.2
3,429 reviews
Search WestJet flights
American AirlinesPriceFrom C$ 423Free CancellationRating
7.1
11,895 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 501Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 540Free CancellationRating
7.1
11,455 reviews
Search Air Canada flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Leavenworth
SeaTac
Kirkland
Tacoma
Marysville
Redmond
Woodinville
Puyallup
Olympia
Tukwila
Ellensburg
Bainbridge Island
Gig Harbor
Kent
Edmonds
Chehalis
Shoreline
Fife
Ocean Shores

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 you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Montreal.

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.

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/9
Tue 15/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States