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Cheap flights from Seattle to Montreal from $109

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 2/26. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:05 am - 12:42 am
SEA
-
YUL
14h 37m1 stop
WestJet Logo
6:45 am - 1:08 pm
YUL
-
SEA
9h 23m1 stop
$268WestJet
Fri, May 29 - Mon, Jun 1
WestJet Logo
7:05 am - 12:42 am
SEA
-
YUL
14h 37m1 stop
WestJet Logo
6:45 am - 1:08 pm
YUL
-
SEA
9h 23m1 stop
$269WestJet
Fri, May 29 - Mon, Jun 1
American Airlines Logo
3:00 pm - 3:08 pm
SEA
-
YUL
21h 08m1 stop
American Airlines Logo
12:59 pm - 12:24 am
YUL
-
SEA
14h 25m2 stops
$286American Airlines
Tue, Feb 10 - Tue, Feb 24
WestJet Logo
3:10 pm - 12:38 am
SEA
-
YUL
30h 28m2 stops
WestJet Logo
6:45 am - 2:19 pm
YUL
-
SEA
34h 34m2 stops
$289WestJet
Tue, Feb 10 - Tue, Feb 24
WestJet Logo
1:15 pm - 4:27 pm
SEA
-
YUL
24h 12m2 stops
WestJet Logo
6:45 am - 1:08 pm
YUL
-
SEA
9h 23m1 stop
$290WestJet
Fri, May 29 - Mon, Jun 1
WestJet Logo
3:10 pm - 12:38 am
SEA
-
YUL
30h 28m2 stops
WestJet Logo
6:45 am - 2:19 pm
YUL
-
SEA
34h 34m2 stops
$292WestJet
Tue, Apr 14 - Sat, Apr 18
Multiple Airlines Logo
5:55 pm - 4:30 pm
SEA
-
YUL
19h 35m2 stops
Multiple Airlines Logo
7:30 pm - 2:19 pm
YUL
-
SEA
21h 49m1 stop
$294Multiple Airlines
Wed, Feb 25 - Mon, Mar 2
Multiple Airlines Logo
9:25 pm - 7:05 am
SEA
-
YUL
30h 40m2 stops
Multiple Airlines Logo
6:45 am - 7:18 pm
YUL
-
SEA
15h 33m1 stop
$298Multiple Airlines
Thu, Feb 5 - Thu, Feb 12
Multiple Airlines Logo
1:11 pm - 7:05 am
SEA
-
YUL
14h 54m2 stops
Multiple Airlines Logo
6:45 am - 7:17 pm
YUL
-
SEA
15h 32m1 stop
$299Multiple Airlines
Mon, Jan 26 - Fri, Jan 30
WestJet Logo
3:10 pm - 7:05 am
SEA
-
YUL
12h 55m1 stop
WestJet Logo
7:30 pm - 2:31 pm
YUL
-
SEA
22h 01m1 stop
$301WestJet
Sun, Mar 22 - Fri, Mar 27

Air Canada flights from Seattle to Montreal

Our best Air Canada deals on Seattle to Montreal flight tickets
Air Canada
Feb 16
SEA8:00 pmSeattle/Tacoma Intl
7h 44m
1 stop
YUL6:44 amMontreal Pierre Elliott Trudeau Intl
Feb 24
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 01m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$352
Air Canada
Jan 21
SEA9:55 amSeattle/Tacoma Intl
8h 00m
1 stop
YUL8:55 pmMontreal Pierre Elliott Trudeau Intl
Jan 23
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
10h 01m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$425
Air Canada
Jan 17
SEA5:50 amSeattle/Tacoma Intl
8h 10m
1 stop
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
Jan 20
YUL1:25 pmMontreal Pierre Elliott Trudeau Intl
8h 51m
1 stop
SEA7:16 pmSeattle/Tacoma Intl
$532

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
May 29
SEA7:05 amSeattle/Tacoma Intl
14h 37m
1 stop
YUL12:42 amMontreal Pierre Elliott Trudeau Intl
Jun 1
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
9h 23m
1 stop
SEA1:08 pmSeattle/Tacoma Intl
$268
WestJet
May 29
SEA7:05 amSeattle/Tacoma Intl
14h 37m
1 stop
YUL12:42 amMontreal Pierre Elliott Trudeau Intl
Jun 1
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
9h 23m
1 stop
SEA1:08 pmSeattle/Tacoma Intl
$269
WestJet
Feb 10
SEA3:10 pmSeattle/Tacoma Intl
30h 28m
2 stops
YUL12:38 amMontreal Pierre Elliott Trudeau Intl
Feb 24
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
34h 34m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$289

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 January 8, 2026.
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

Fri 5/29

7:05 am-12:42 am

1 stop14h 37m

Montreal Pierre Elliott Trudeau Intl

Mon 6/1

6:45 am-1:08 pm

1 stop9h 23m

$268

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/29

7:05 am-12:42 am

1 stop14h 37m

Montreal Pierre Elliott Trudeau Intl

Mon 6/1

6:45 am-1:08 pm

1 stop9h 23m

$269

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 2/10

3:00 pm-3:08 pm

1 stop21h 08m

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

12:59 pm-12:24 am

2 stops14h 25m

$286

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 2/10

3:10 pm-12:38 am

2 stops30h 28m

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

6:45 am-2:19 pm

2 stops34h 34m

$289

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 5/29

1:15 pm-4:27 pm

2 stops24h 12m

Montreal Pierre Elliott Trudeau Intl

Mon 6/1

6:45 am-1:08 pm

1 stop9h 23m

$290

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 4/14

3:10 pm-12:38 am

2 stops30h 28m

Montreal Pierre Elliott Trudeau Intl

Sat 4/18

6:45 am-2:19 pm

2 stops34h 34m

$292

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 2/25

5:55 pm-4:30 pm

2 stops19h 35m

Montreal Pierre Elliott Trudeau Intl

Mon 3/2

7:30 pm-2:19 pm

1 stop21h 49m

$294

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 2/5

9:25 pm-7:05 am

2 stops30h 40m

Montreal Pierre Elliott Trudeau Intl

Thu 2/12

6:45 am-7:18 pm

1 stop15h 33m

$298

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 1/26

1:11 pm-7:05 am

2 stops14h 54m

Montreal Pierre Elliott Trudeau Intl

Fri 1/30

6:45 am-7:17 pm

1 stop15h 32m

$299

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 3/22

3:10 pm-7:05 am

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Fri 3/27

7:30 pm-2:31 pm

1 stop22h 01m

$301

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 $660. Flights from Seattle to Montreal on a Friday will generally be more expensive and average around $820. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $592 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 $352 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 59% 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 January 2026, prices for Seattle to Montreal flights are approximately 8% more expensive 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

$274

Fastest flight time

5h 07m

Direct flights

Every day

Airports in Montreal

2 airports
The best one-way flight to Montreal from Seattle in the past 72 hours is $274. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $563.
The fastest flight from Seattle to Montreal takes 5h 07m
Direct flights go from Seattle to Montreal every day.
There are 2 airports in Montreal. From Seattle there are direct flights to 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 5h 07m 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
9,139 reviews
Search United Airlines flights
Air CanadaPriceFrom $278Free CancellationRating
7.1
10,603 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
3,235 reviews
Search WestJet flights
DeltaPriceFrom $354Free CancellationRating
7.9
8,027 reviews
Search Delta flights
American AirlinesPriceFrom $493Free CancellationRating
7.2
11,097 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.

An easier way to manage your Montreal trip

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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