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Cheap flights from Seattle to Montreal from $134

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Montreal departing on 12/8. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 1:08 pmYUL-SEA
9h 23m1 stop
$228WestJet
Find Deal
Mon, Apr 27 - Mon, May 4
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 1:08 pmYUL-SEA
9h 23m1 stop
$251WestJet
Find Deal
Fri, May 15 - Fri, May 22
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 1:08 pmYUL-SEA
9h 23m1 stop
$253WestJet
Find Deal
Sun, Apr 26 - Mon, May 4
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 8:28 pmYUL-SEA
16h 43m1 stop
$266WestJet
Find Deal
Sun, Apr 26 - Sun, May 3
WestJet Logo
3:20 pm - 4:27 pmSEA-YUL
22h 07m1 stop
WestJet Logo
6:45 am - 1:08 pmYUL-SEA
9h 23m1 stop
$270WestJet
Find Deal
Sat, Apr 25 - Mon, May 4
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 8:28 pmYUL-SEA
16h 43m1 stop
$275WestJet
Find Deal
Mon, Apr 27 - Tue, May 5
WestJet Logo
3:10 pm - 7:05 amSEA-YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:19 pmYUL-SEA
21h 49m1 stop
$276WestJet
Find Deal
Wed, Feb 4 - Sun, Feb 8
WestJet Logo
3:20 pm - 4:27 pmSEA-YUL
22h 07m1 stop
WestJet Logo
6:45 am - 8:28 pmYUL-SEA
16h 43m1 stop
$278WestJet
Find Deal
Sat, Apr 25 - Sun, May 3
WestJet Logo
2:05 pm - 12:42 amSEA-YUL
7h 37m1 stop
WestJet Logo
6:45 am - 8:28 pmYUL-SEA
16h 43m1 stop
$279WestJet
Find Deal
Sun, Apr 26 - Sat, May 2
Air Canada Logo
8:00 pm - 6:44 amSEA-YUL
7h 44m1 stop
Air Canada Logo
7:30 am - 2:31 pmYUL-SEA
10h 01m1 stop
$288Air Canada
Find Deal
Mon, Dec 8 - Sun, Dec 14

United Airlines flights from Seattle to Montreal

Our best United Airlines deals on Seattle to Montreal flight tickets
United Airlines
Dec 8
SEA8:10 amSeattle/Tacoma Intl
8h 38m
1 stop
YUL7:48 pmMontreal Pierre Elliott Trudeau Intl
Dec 13
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
18h 00m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
$366
Find similar
United Airlines
Dec 8
SEA5:11 pmSeattle/Tacoma Intl
19h 05m
2 stops
YUL3:16 pmMontreal Pierre Elliott Trudeau Intl
Dec 16
YUL9:15 amMontreal Pierre Elliott Trudeau Intl
17h 00m
2 stops
SEA11:15 pmSeattle/Tacoma Intl
$371
Find similar

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
Dec 8
SEA8:00 pmSeattle/Tacoma Intl
7h 44m
1 stop
YUL6:44 amMontreal Pierre Elliott Trudeau Intl
Dec 14
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 01m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$288
Find similar
Air Canada
Dec 8
SEA8:00 pmSeattle/Tacoma Intl
9h 22m
2 stops
YUL8:22 amMontreal Pierre Elliott Trudeau Intl
Dec 14
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 01m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$294
Find similar
Air Canada
Dec 8
SEA10:05 amSeattle/Tacoma Intl
7h 55m
1 stop
YUL9:00 pmMontreal Pierre Elliott Trudeau Intl
Dec 12
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 01m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$342
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Montreal 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 November 25, 2025.
Use the filters below to find and compare flights from Seattle to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 4/27

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Mon 5/4

6:45 am-1:08 pm

1 stop9h 23m

$228

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/15

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Fri 5/22

6:45 am-1:08 pm

1 stop9h 23m

$251

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 4/26

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Mon 5/4

6:45 am-1:08 pm

1 stop9h 23m

$253

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 4/26

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Sun 5/3

6:45 am-8:28 pm

1 stop16h 43m

$266

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-4:27 pm

1 stop22h 07m

Montreal Pierre Elliott Trudeau Intl

Mon 5/4

6:45 am-1:08 pm

1 stop9h 23m

$270

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 4/27

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Tue 5/5

6:45 am-8:28 pm

1 stop16h 43m

$275

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 2/4

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

7:30 pm-2:19 pm

1 stop21h 49m

$276

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-4:27 pm

1 stop22h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 5/3

6:45 am-8:28 pm

1 stop16h 43m

$278

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 4/26

2:05 pm-12:42 am

1 stop7h 37m

Montreal Pierre Elliott Trudeau Intl

Sat 5/2

6:45 am-8:28 pm

1 stop16h 43m

$279

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 12/8

8:00 pm-6:44 am

1 stop7h 44m

Montreal Pierre Elliott Trudeau Intl

Sun 12/14

7:30 am-2:31 pm

1 stop10h 01m

$288

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 Montreal from

How to get the cheapest flight ticket from Seattle to Montreal

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 Montreal?

The cheapest month to fly to Montreal from Seattle is in September. Flight prices, which tend to average around $482, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of September, then departing from Seattle during the month August is also very affordable. Most momondo users find prices during this month for around $492.

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

The cheapest day to depart from Seattle to Montreal is on a Monday when prices can be found for as low as $647. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $818. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Montreal?

Our most recent data shows that the best time of day to fly to Montreal is in the afternoon. Flights from Seattle to Montreal during this time can be as low as $305. In the morning is when there is more demand to fly to Montreal, so prices are often more expensive at around $728 per ticket.

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

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

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

You are more likely to see cheaper flights to Montreal from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around $559 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from Seattle for as low as $395 on momondo.

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

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Montreal 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 Seattle to Montreal flights?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to Montreal flight.

How have Seattle to Montreal flight prices changed over time?

As of November 2025, prices for Seattle to Montreal flights are approximately 32% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Montreal

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

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

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

Best Price Found

$259

Fastest flight time

5h 09m

Direct flights

Thu, Fri, Sat and Sun

Airports in Montreal

1 airport
The best one-way flight to Montreal from Seattle in the past 72 hours is $259. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $517.
The fastest flight from Seattle to Montreal takes 5h 09m
Direct flights go from Seattle to Montreal on Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Montreal: Montreal Pierre Elliott Trudeau Intl (YUL)
Search flight deals

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

    The straight-line distance from Seattle/Tacoma Intl to Montreal is 2282.0 mi. Typically, this will take 7h 37m by plane in normal conditions.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Montreal.

  • What documentation or ID do you need to fly to Montreal?

    The required travel and health documents for your Montreal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Seattle to Montreal?

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

Best airlines flying from Seattle to Montreal

Compare and see reviews for airlines that fly from Seattle to Montreal with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $207Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
Air CanadaPriceFrom $273Free CancellationRating
7.1
10,476 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,173 reviews
Search WestJet flights
DeltaPriceFrom $354Free CancellationRating
7.9
7,999 reviews
Search Delta flights
American AirlinesPriceFrom $493Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights

Why use momondo?

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

Finding the right flight to Montreal from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montreal quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to Montreal from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Seattle to Montreal 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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Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Airports listed have a maximum distance of 9.4 mi from Montreal
Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport