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Cheap flights from Montreal to Seattle from $168

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 to Seattle departing on 5/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Montreal to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
5:30 pm - 9:40 am
YUL
-
SEA
19h 10m
1 stop
WestJet Logo
7:35 pm - 7:00 am
SEA
-
YUL
8h 25m
1 stop
$260WestJet
Wed, May 13 - Sat, May 23
WestJet Logo
7:15 am - 6:45 pm
YUL
-
SEA
14h 30m
1 stop
WestJet Logo
7:35 pm - 7:00 am
SEA
-
YUL
8h 25m
1 stop
$261WestJet
Fri, May 8 - Sun, May 10
WestJet Logo
7:15 am - 9:40 am
YUL
-
SEA
29h 25m
1 stop
WestJet Logo
7:35 pm - 7:00 am
SEA
-
YUL
8h 25m
1 stop
$263WestJet
Sun, May 10 - Tue, May 19
WestJet Logo
7:25 pm - 9:40 am
YUL
-
SEA
17h 15m
2 stops
WestJet Logo
7:35 pm - 7:00 am
SEA
-
YUL
8h 25m
1 stop
$268WestJet
Wed, May 13 - Sat, May 23
WestJet Logo
6:45 am - 6:45 pm
YUL
-
SEA
15h 00m
2 stops
WestJet Logo
7:35 pm - 7:00 am
SEA
-
YUL
8h 25m
1 stop
$285WestJet
Fri, May 8 - Sun, May 10
WestJet Logo
7:30 pm - 2:19 pm
YUL
-
SEA
21h 49m
1 stop
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
$293WestJet
Mon, Mar 9 - Mon, Mar 16
WestJet Logo
6:45 am - 2:19 pm
YUL
-
SEA
34h 34m
2 stops
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
$295WestJet
Mon, Mar 9 - Mon, Mar 16
WestJet Logo
7:30 pm - 2:19 pm
YUL
-
SEA
21h 49m
1 stop
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
$297WestJet
Mon, Mar 16 - Tue, Mar 24
WestJet Logo
6:45 am - 2:19 pm
YUL
-
SEA
34h 34m
2 stops
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m
1 stop
$303WestJet
Mon, Mar 16 - Mon, Mar 23
WestJet Logo
7:15 am - 9:40 am
YUL
-
SEA
29h 25m
1 stop
WestJet Logo
7:35 pm - 6:25 pm
SEA
-
YUL
19h 50m
2 stops
$306WestJet
Sun, May 10 - Tue, May 19

WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets
WestJet
May 13
YUL5:30 pmMontreal Pierre Elliott Trudeau Intl
19h 10m
1 stop
SEA9:40 amSeattle/Tacoma Intl
May 23
SEA7:35 pmSeattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
$260
WestJet
May 8
YUL7:15 amMontreal Pierre Elliott Trudeau Intl
14h 30m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
May 10
SEA7:35 pmSeattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
$261
WestJet
May 10
YUL7:15 amMontreal Pierre Elliott Trudeau Intl
29h 25m
1 stop
SEA9:40 amSeattle/Tacoma Intl
May 19
SEA7:35 pmSeattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
$263

Delta flights from Montreal to Seattle

Our best Delta deals on Montreal to Seattle flight tickets
Delta
Feb 13
YUL12:52 pmMontreal Pierre Elliott Trudeau Intl
12h 28m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
Feb 18
SEA8:30 amSeattle/Tacoma Intl
11h 40m
1 stop
YUL11:10 pmMontreal Pierre Elliott Trudeau Intl
$617
Delta
Feb 14
YUL2:40 pmMontreal Pierre Elliott Trudeau Intl
18h 58m
2 stops
SEA6:38 amSeattle/Tacoma Intl
Feb 17
SEA11:15 pmSeattle/Tacoma Intl
9h 44m
1 stop
YUL11:59 amMontreal Pierre Elliott Trudeau Intl
$629
Delta
Feb 9
YUL4:47 pmMontreal Pierre Elliott Trudeau Intl
8h 02m
1 stop
SEA9:49 pmSeattle/Tacoma Intl
Feb 16
SEA6:00 amSeattle/Tacoma Intl
6h 55m
1 stop
YUL3:55 pmMontreal Pierre Elliott Trudeau Intl
$644

momondo Fare Finder

 
Customize your flight search to find flights from Montreal 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 February 4, 2026.
Use the filters below to find and compare flights from Montreal 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 5/13

5:30 pm-9:40 am

1 stop19h 10m

Seattle/Tacoma Intl

Sat 5/23

7:35 pm-7:00 am

1 stop8h 25m

$260

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 5/8

7:15 am-6:45 pm

1 stop14h 30m

Seattle/Tacoma Intl

Sun 5/10

7:35 pm-7:00 am

1 stop8h 25m

$261

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 5/10

7:15 am-9:40 am

1 stop29h 25m

Seattle/Tacoma Intl

Tue 5/19

7:35 pm-7:00 am

1 stop8h 25m

$263

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 5/13

7:25 pm-9:40 am

2 stops17h 15m

Seattle/Tacoma Intl

Sat 5/23

7:35 pm-7:00 am

1 stop8h 25m

$268

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 5/8

6:45 am-6:45 pm

2 stops15h 00m

Seattle/Tacoma Intl

Sun 5/10

7:35 pm-7:00 am

1 stop8h 25m

$285

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 3/9

7:30 pm-2:19 pm

1 stop21h 49m

Seattle/Tacoma Intl

Mon 3/16

3:10 pm-7:05 am

1 stop12h 55m

$293

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 3/9

6:45 am-2:19 pm

2 stops34h 34m

Seattle/Tacoma Intl

Mon 3/16

3:10 pm-7:05 am

1 stop12h 55m

$295

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 3/16

7:30 pm-2:19 pm

1 stop21h 49m

Seattle/Tacoma Intl

Tue 3/24

3:10 pm-7:05 am

1 stop12h 55m

$297

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 3/16

6:45 am-2:19 pm

2 stops34h 34m

Seattle/Tacoma Intl

Mon 3/23

3:10 pm-7:05 am

1 stop12h 55m

$303

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 5/10

7:15 am-9:40 am

1 stop29h 25m

Seattle/Tacoma Intl

Tue 5/19

7:35 pm-6:25 pm

2 stops19h 50m

$306

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?

What is the cheapest month to fly to Seattle?

In general, February 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 $472. If you don’t want to visit Seattle in February, then you should wait until August to fly from Montreal, when ticket prices are also cheap, with an average price of $480.

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 Monday. momondo users have found tickets for Monday departures for as low as $281. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday 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 $475.

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 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 $468 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 $360 on momondo.

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

There are 3 cabin classes available to choose from on Montreal 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 to Seattle flights?

You could potentially save up to 17% 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 February 2026, prices for Montreal to Seattle flights are approximately 1% 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

Fastest flight time

5h 52m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Seattle

1 airport
The fastest flight from Montreal to Seattle takes 5h 52m
Direct flights go from Montreal 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 there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • 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 5h 52m 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 $209Free CancellationRating
7.2
3,255 reviews
Search WestJet flights
United AirlinesPriceFrom $263Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
Air CanadaPriceFrom $314Free CancellationRating
7.1
10,688 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
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

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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