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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from $159

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 7/22. 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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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 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$254WestJet
Wed, Aug 5 - Mon, Aug 10
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
10:30 am - 12:25 am
SEA
-
YUL
10h 55m
2 stops
$262WestJet
Wed, Aug 5 - Mon, Aug 10
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$266WestJet
Thu, Aug 20 - Fri, Aug 28
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$271WestJet
Wed, Aug 5 - Mon, Aug 10
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
10:30 am - 12:25 am
SEA
-
YUL
10h 55m
2 stops
$273WestJet
Thu, Aug 20 - Fri, Aug 28
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$278WestJet
Thu, Aug 20 - Fri, Aug 28
WestJet Logo
5:45 pm - 6:45 pm
YUL
-
SEA
28h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$279WestJet
Thu, Jul 23 - Tue, Jul 28
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$281WestJet
Thu, Jul 16 - Sun, Jul 19
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$282WestJet
Thu, Aug 20 - Fri, Aug 28
WestJet Logo
5:30 pm - 9:40 am
YUL
-
SEA
19h 10m
1 stop
WestJet Logo
7:35 pm - 7:05 am
SEA
-
YUL
8h 30m
1 stop
$284WestJet
Thu, Aug 20 - Fri, Aug 28

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
Aug 5
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Aug 10
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
$254
WestJet
Aug 5
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Aug 10
SEA10:30 amSeattle/Tacoma Intl
10h 55m
2 stops
YUL12:25 amMontreal Pierre Elliott Trudeau Intl
$262
WestJet
Aug 20
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
Aug 28
SEA7:35 pmSeattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 amMontreal Pierre Elliott Trudeau Intl
$266

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
May 19
YUL12:40 pmMontreal Pierre Elliott Trudeau Intl
12h 22m
1 stop
SEA10:02 pmSeattle/Tacoma Intl
May 26
SEA9:30 amSeattle/Tacoma Intl
10h 43m
1 stop
YUL11:13 pmMontreal Pierre Elliott Trudeau Intl
$664
Delta
May 19
YUL12:40 pmMontreal Pierre Elliott Trudeau Intl
12h 22m
1 stop
SEA10:02 pmSeattle/Tacoma Intl
May 26
SEA9:10 amSeattle/Tacoma Intl
11h 31m
1 stop
YUL11:41 pmMontreal Pierre Elliott Trudeau Intl
$720
Delta
May 18
YUL7:10 amMontreal Pierre Elliott Trudeau Intl
12h 27m
1 stop
SEA4:37 pmSeattle/Tacoma Intl
May 27
SEA11:30 amSeattle/Tacoma Intl
9h 27m
1 stop
YUL11:57 pmMontreal Pierre Elliott Trudeau Intl
$721

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 832,500 searches. Data last updated May 8, 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
Quickest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/5

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Mon 8/10

7:35 pm-7:05 am

1 stop8h 30m

$254

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/5

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Mon 8/10

10:30 am-12:25 am

2 stops10h 55m

$262

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Fri 8/28

7:35 pm-7:05 am

1 stop8h 30m

$266

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/5

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Mon 8/10

7:35 pm-7:05 am

1 stop8h 30m

$271

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Fri 8/28

10:30 am-12:25 am

2 stops10h 55m

$273

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Fri 8/28

7:35 pm-7:05 am

1 stop8h 30m

$278

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 7/23

5:45 pm-6:45 pm

2 stops28h 00m

Seattle/Tacoma Intl

Tue 7/28

7:35 pm-7:05 am

1 stop8h 30m

$279

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 7/16

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Sun 7/19

7:35 pm-7:05 am

1 stop8h 30m

$281

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Fri 8/28

7:35 pm-7:05 am

1 stop8h 30m

$282

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

5:30 pm-9:40 am

1 stop19h 10m

Seattle/Tacoma Intl

Fri 8/28

7:35 pm-7:05 am

1 stop8h 30m

$284

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 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?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $417. If you don’t want to visit Seattle in February, then you should wait until April to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of $426.

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

On average, the least expensive day to fly to Seattle from Montreal Pierre Elliott Trudeau Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $338. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Montreal Pierre Elliott Trudeau Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $638.

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 $483 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 $416 on momondo.

Can stopping save me money on Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights?

You could potentially save up to 12% 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 May 2026, prices for Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights are approximately 28% cheaper 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 42m

Direct flights

None
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle takes 7h 42m
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?

    A flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl will travel around 2274.5 mi. In terms of flight time, this usually takes a little over 7h 42m.

  • 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 refreshed on a daily basis.

  • 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 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 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
WestJetPriceFrom $209Free CancellationRating
7.2
3,332 reviews
Search WestJet flights
Air CanadaPriceFrom $314Free CancellationRating
7.1
11,002 reviews
Search Air Canada 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
Olympia
Lynnwood
Redmond
Kent
Tukwila
Puyallup
Marysville
Lakewood
Cle Elum
Federal Way
Centralia
Fife
Westport
Shoreline
Tumwater

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montreal to Seattle. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Montreal to Seattle flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Montreal and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Montreal to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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