Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 238

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 24/2. 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

Discover deals from 900+ travel sites with momondo.

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

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
4:15 p.m. - 2:19 p.m.
YUL
-
SEA
25h 04m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 354WestJet
Wed, 15 Apr - Fri, 15 May
WestJet Logo
5:30 p.m. - 9:40 a.m.
YUL
-
SEA
19h 10m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 356WestJet
Wed, 13 May - Sat, 23 May
WestJet Logo
7:15 a.m. - 6:45 p.m.
YUL
-
SEA
14h 30m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 357WestJet
Fri, 8 May - Sun, 10 May
WestJet Logo
7:15 a.m. - 6:45 p.m.
YUL
-
SEA
14h 30m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 358WestJet
Mon, 11 May - Fri, 15 May
WestJet Logo
7:15 a.m. - 9:40 a.m.
YUL
-
SEA
29h 25m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 360WestJet
Sun, 10 May - Tue, 19 May
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 361WestJet
Sat, 9 May - Wed, 27 May
WestJet Logo
7:15 a.m. - 6:45 p.m.
YUL
-
SEA
14h 30m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 364WestJet
Sun, 26 Apr - Mon, 25 May
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 369WestJet
Wed, 6 May - Sat, 9 May
WestJet Logo
5:30 p.m. - 9:40 a.m.
YUL
-
SEA
19h 10m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 378WestJet
Tue, 28 Apr - Tue, 26 May
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
C$ 382WestJet
Sat, 2 May - Thu, 28 May

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 Apr
YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl
25h 04m
1 stop
SEA2:19 p.m.Seattle/Tacoma Intl
15 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 354
WestJet
13 May
YUL5:30 p.m.Montreal Pierre Elliott Trudeau Intl
19h 10m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
23 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 356
WestJet
8 May
YUL7:15 a.m.Montreal Pierre Elliott Trudeau Intl
14h 30m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
10 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 357

Delta flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Our best Delta deals on Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight tickets
Delta
13 Feb
YUL12:52 p.m.Montreal Pierre Elliott Trudeau Intl
12h 28m
1 stop
SEA10:20 p.m.Seattle/Tacoma Intl
18 Feb
SEA8:30 a.m.Seattle/Tacoma Intl
11h 40m
1 stop
YUL11:10 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 844
Delta
10 Feb
YUL2:40 p.m.Montreal Pierre Elliott Trudeau Intl
19h 00m
2 stops
SEA6:40 a.m.Seattle/Tacoma Intl
19 Feb
SEA11:15 p.m.Seattle/Tacoma Intl
9h 44m
1 stop
YUL11:59 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 899
Delta
10 Feb
YUL2:40 p.m.Montreal Pierre Elliott Trudeau Intl
19h 00m
2 stops
SEA6:40 a.m.Seattle/Tacoma Intl
13 Feb
SEA11:10 p.m.Seattle/Tacoma Intl
9h 49m
1 stop
YUL11:59 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,263

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 6 February 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

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 15/4

4:15 p.m.-2:19 p.m.

1 stop25h 04m

Seattle/Tacoma Intl

Fri 15/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 354

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 13/5

5:30 p.m.-9:40 a.m.

1 stop19h 10m

Seattle/Tacoma Intl

Sat 23/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 356

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 8/5

7:15 a.m.-6:45 p.m.

1 stop14h 30m

Seattle/Tacoma Intl

Sun 10/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 357

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 11/5

7:15 a.m.-6:45 p.m.

1 stop14h 30m

Seattle/Tacoma Intl

Fri 15/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 358

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

7:15 a.m.-9:40 a.m.

1 stop29h 25m

Seattle/Tacoma Intl

Tue 19/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 360

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 9/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

Seattle/Tacoma Intl

Wed 27/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 361

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 26/4

7:15 a.m.-6:45 p.m.

1 stop14h 30m

Seattle/Tacoma Intl

Mon 25/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 364

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 6/5

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

2 stops15h 00m

Seattle/Tacoma Intl

Sat 9/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 369

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 28/4

5:30 p.m.-9:40 a.m.

1 stop19h 10m

Seattle/Tacoma Intl

Tue 26/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 378

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

Seattle/Tacoma Intl

Thu 28/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

C$ 382

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 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$ 580.

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

Our data shows that Friday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 661. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 728. 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 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$ 641 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$ 493 on momondo.

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

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

You could potentially save up to 27% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight.

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

As of February 2026, prices for Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights are approximately 0% 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

Best price found

C$ 626

Fastest flight time

5h 52m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Seattle

1 airport
The best flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Seattle found on momondo in the last 72 hours is C$ 626
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle takes 5h 52m
Direct flights go from Montreal Pierre Elliott Trudeau Intl Airport to Seattle on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Seattle. From Montreal Pierre Elliott Trudeau Intl Airport there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • 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 5h 52m.

  • 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
American AirlinesPriceFrom C$ 256Free CancellationRating
7.2
11,248 reviews
Search American Airlines flights
DeltaPriceFrom C$ 278Free CancellationRating
7.9
8,162 reviews
Search Delta flights
WestJetPriceFrom C$ 354Free CancellationRating
7.2
3,255 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 492Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 512Free CancellationRating
7.4
9,245 reviews
Search United Airlines flights

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Leavenworth
Marysville
SeaTac
Tacoma
Redmond
Kirkland
Tukwila
Olympia
Ocean Shores
Bainbridge Island
Ellensburg
Gig Harbor
Renton
Mukilteo
Cle Elum
Centralia
Puyallup
Kent
Edmonds

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
Sun 8/3
Sun 15/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States