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Cheap flights from Seattle to Montreal from $148

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 9/15. 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

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12:59 am - 10:15 pmSEA-YUL
18h 16m2 stops
 Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
Mon, Sep 22 - Mon, Oct 13
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$331WestJet
Find Deal
Fri, Sep 26 - Sat, Oct 11
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$335WestJet
Find Deal
Wed, Sep 24 - Fri, Oct 10
WestJet Logo
1:15 pm - 12:27 amSEA-YUL
32h 12m2 stops
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$336WestJet
Find Deal
Fri, Sep 12 - Sun, Sep 14
WestJet Logo
1:15 pm - 12:27 amSEA-YUL
32h 12m2 stops
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$337WestJet
Find Deal
Fri, Oct 3 - Sun, Oct 5
WestJet Logo
8:40 am - 12:27 amSEA-YUL
12h 47m2 stops
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
$338WestJet
Find Deal
Fri, Sep 26 - Sat, Oct 11
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1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
 Logo
1:10 pm - 8:52 amYUL-SEA
22h 42m2 stops
Thu, Sep 4 - Mon, Sep 8
American Airlines Logo
12:46 am - 4:42 pmSEA-YUL
12h 56m1 stop
American Airlines Logo
7:50 am - 8:09 pmYUL-SEA
15h 19m2 stops
$377American Airlines
Find Deal
Sun, Aug 24 - Wed, Sep 3
American Airlines Logo
1:23 am - 3:00 pmSEA-YUL
10h 37m1 stop
American Airlines Logo
3:45 pm - 10:50 amYUL-SEA
22h 05m1 stop
$378American Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
American Airlines Logo
3:09 pm - 11:36 amSEA-YUL
17h 27m1 stop
American Airlines Logo
12:30 pm - 11:41 pmYUL-SEA
14h 11m1 stop
$382American Airlines
Find Deal
Wed, Aug 6 - Wed, Aug 13

WestJet flights from Seattle to Montreal

Our best WestJet deals on Seattle to Montreal flight tickets
WestJet
Sep 26
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 11
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
WestJet
Sep 24
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
Oct 10
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
WestJet
Sep 12
SEA1:15 pmSeattle/Tacoma Intl
32h 12m
2 stops
YUL12:27 amMontreal Pierre Elliott Trudeau Intl
Sep 14
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl

Delta flights from Seattle to Montreal

Our best Delta deals on Seattle to Montreal flight tickets
Delta
Jul 23
SEA6:00 amSeattle/Tacoma Intl
12h 28m
2 stops
YUL9:28 pmMontreal Pierre Elliott Trudeau Intl
Jul 29
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
13h 15m
2 stops
SEA4:15 pmSeattle/Tacoma Intl
Delta
Jul 21
SEA11:59 pmSeattle/Tacoma Intl
13h 08m
2 stops
YUL4:07 pmMontreal Pierre Elliott Trudeau Intl
Jul 29
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
13h 15m
2 stops
SEA4:15 pmSeattle/Tacoma Intl

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 May. Flight prices, which tend to average around $488, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of May, then departing from Seattle during the month July is also very affordable. Most momondo users find prices during this month for around $521.

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 $732. Flights from Seattle to Montreal on a Wednesday will generally be more expensive and average around $798. 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 $766 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 $556 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 $334 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?

No. A direct flight is the cheapest option for a flight between Seattle to Montreal.

How have Seattle to Montreal flight prices changed over time?

As of July 2025, prices for Seattle to Montreal flights are approximately 37% 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

$148

Fastest flight time

5h 09m

Direct flights

Mon, Tue, 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 $148. The best round-trip flight deal from Seattle to Montreal found on momondo in the last 72 hours is $316.
The fastest flight from Seattle to Montreal takes 5h 09m
Direct flights go from Seattle to Montreal on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines and Air Canada.
There is 1 airport near Montreal: Montreal Pierre Elliott Trudeau Intl (YUL)

  • 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 36m 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 $228Free CancellationRating
7.4
8,842 reviews
Search United Airlines flights
Air CanadaPriceFrom $267Free CancellationRating
7.1
9,691 reviews
Search Air Canada flights
WestJetPriceFrom $289Free CancellationRating
7.2
2,922 reviews
Search WestJet flights
DeltaPriceFrom $455Free CancellationRating
8.0
7,954 reviews
Search Delta flights
American AirlinesPriceFrom $465Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • United Airlines Flights From Seattle to Montreal

    Across 7 United Airlines flights from Seattle to Montreal this week, the average price was $616, with the best United Airlines deals starting from $228 round-trip. 8,842 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • Air Canada Flights From Seattle to Montreal

    The best Air Canada deal for Seattle to Montreal flight tickets found on momondo in the last 72 hours was $267, round-trip. It should be noted that an average Air Canada flight deal for this route in this time was higher, at $607 round-trip. Air Canada operates 7 flights out of Seattle into Montreal in an average week, so prices vary by time and availability. 9,691 Air Canada reviews by users on momondo have scored the airline at 7.1/10.


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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1 adult
Mon 7/14
Mon 7/21

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