Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to Montreal from C$ 229

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 18/9. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
4:15 p.m. - 2:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
C$ 523WestJet
Sat, 17 Oct - Sun, 25 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
C$ 527WestJet
Fri, 25 Sep - Mon, 28 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
C$ 532WestJet
Wed, 7 Oct - Thu, 15 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
C$ 535WestJet
Thu, 10 Sep - Tue, 15 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
4:15 p.m. - 2:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
C$ 536WestJet
Sun, 18 Oct - Tue, 27 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
7:15 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 30m1 stop Calgary
C$ 538WestJet
Sun, 18 Oct - Thu, 22 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
7:15 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
14h 30m1 stop Calgary
C$ 541WestJet
Fri, 16 Oct - Fri, 23 Oct
WestJet Logo
10:30 a.m. - 12:25 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 55m2 stops Calgary Toronto Pearson Intl
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
C$ 546WestJet
Tue, 15 Sep - Wed, 23 Sep
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
4:15 p.m. - 2:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
C$ 548WestJet
Sat, 17 Oct - Mon, 26 Oct
WestJet Logo
7:35 p.m. - 7:05 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
8h 30m1 stop Calgary
WestJet Logo
6:45 a.m. - 6:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
15h 00m2 stops Toronto Pearson Intl Calgary
C$ 549WestJet
Tue, 15 Sep - Wed, 23 Sep

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

Delta flights from Seattle to Montreal

Our best Delta deals on Seattle to Montreal flight tickets
Delta
9 Jan
SEA1:45 p.m.Seattle/Tacoma Intl
6h 50m
1 stop
YUL11:35 p.m.Montreal Pierre Elliott Trudeau Intl
16 Jan
YUL12:45 p.m.Montreal Pierre Elliott Trudeau Intl
12h 20m
1 stop
SEA10:05 p.m.Seattle/Tacoma Intl
C$ 592
Delta
5 Sep
SEA11:18 a.m.Seattle/Tacoma Intl
9h 12m
1 stop
YUL11:30 p.m.Montreal Pierre Elliott Trudeau Intl
12 Sep
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
11h 49m
1 stop
SEA2:49 p.m.Seattle/Tacoma Intl
C$ 594
Delta
19 Aug
SEA9:10 a.m.Seattle/Tacoma Intl
11h 42m
1 stop
YUL11:52 p.m.Montreal Pierre Elliott Trudeau Intl
23 Aug
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
12h 44m
1 stop
SEA4:44 p.m.Seattle/Tacoma Intl
C$ 652

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
17 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
25 Oct
YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl
25h 05m
1 stop
SEA2:20 p.m.Seattle/Tacoma Intl
C$ 523
WestJet
25 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
28 Sep
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 527
WestJet
7 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
8h 30m
1 stop
YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl
15 Oct
YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl
15h 00m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 532

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 96,600 searches. Data last updated 8 August 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

Cheapest round-trip

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sat 17/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 25/10

4:15 p.m.-2:20 p.m.

1 stop25h 05m

C$ 523

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 25/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 28/9

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

2 stops15h 00m

C$ 527

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Wed 7/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

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

2 stops15h 00m

C$ 532

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Thu 10/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

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

2 stops15h 00m

C$ 535

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sun 18/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 27/10

4:15 p.m.-2:20 p.m.

1 stop25h 05m

C$ 536
Quickest round-trip

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sun 18/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

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

1 stop14h 30m

C$ 538

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 16/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

1 stop14h 30m

C$ 541

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Tue 15/9

10:30 a.m.-12:25 a.m.

2 stops10h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

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

2 stops15h 00m

C$ 546

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sat 17/10

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 26/10

4:15 p.m.-2:20 p.m.

1 stop25h 05m

C$ 548

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Tue 15/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

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

2 stops15h 00m

C$ 549

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Seattle and Montreal?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 656 to C$ 1,002.
The lowest price recently found on this route was C$ 523.

What is the cheapest month to fly to Montreal?

The cheapest month to fly to Montreal from Seattle is in March. Flight prices, which tend to average around C$ 651, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Montreal from Seattle during October instead. Flights to Montreal in October, while not as cheap as those in March, still average around C$ 801.

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

Our data shows that Sunday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 896. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Montreal for around C$ 1,145.

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 from Seattle 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 C$ 1,003 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 C$ 382 on momondo.

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

There is only 1 cabin class available to choose from on Seattle 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 47% 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 August 2026, prices for Seattle to Montreal flights are approximately 8% 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

Fastest flight time

8h 14m

Direct flights

None
The fastest flight from Seattle to Montreal takes 8h 14m
There are no direct flights from Seattle to Montreal. There are no popular flight routes from Seattle to Montreal.
Search flight deals

Frequently asked questions about flying from Seattle to Montreal

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

    The straight-line distance from Seattle/Tacoma Intl to Montreal is 3672.5 km. Flights usually cover this in 8h 14m, depending on flying conditions and air traffic around both airports.

  • 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 refresh daily.

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

    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 Seattle/Tacoma Intl Airport to Montreal.

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

    The travel and health documents required for your trip to Montreal 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 Montreal. 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 Seattle to Montreal?

Why use momondo?

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

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 Montreal from Seattle.

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

Flights from Seattle to Montreal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Price alerts on flights to Montreal from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Montreal 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
Mon 7/9
Mon 14/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada

Fly into one of these airports located in Montreal

Airports listed have a maximum distance of 15.1 km from Montreal
Montreal St Hubert Airport
Montreal Pierre Elliott Trudeau Intl Airport