Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Montreal to Seattle from $219

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 9/22. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? 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

Find the cheapest flights from Montreal to Seattle (YMQ-SEA)

Cheap round-trip flights

Air Canada Logo
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
Air Canada Logo
7:15 am - 3:28 pmSEA-YUL
5h 13mnonstop
$309Air Canada
Find Deal
mar., oct. 7 - mar., oct. 14
Air Canada Logo
7:30 am - 2:16 pmYUL-SEA
9h 46m1 stop
Air Canada Logo
5:50 am - 5:00 pmSEA-YUL
8h 10m1 stop
$320Air Canada
Find Deal
mié., oct. 22 - mar., nov. 4
Air Canada Logo
6:00 am - 10:59 amYUL-SEA
7h 59m1 stop
Air Canada Logo
7:15 am - 3:28 pmSEA-YUL
5h 13mnonstop
$321Air Canada
Find Deal
mar., oct. 7 - mar., oct. 14
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
WestJet Logo
1:50 pm - 12:41 amSEA-YUL
7h 51m1 stop
$328WestJet
Find Deal
sáb., oct. 18 - sáb., oct. 25
Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
Logo
3:10 pm - 1:32 pmSEA-YUL
19h 22m1 stop
$341
Find Deal
mié., oct. 22 - mié., oct. 29
Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
Logo
2:05 pm - 2:10 pmSEA-YUL
21h 05m1 stop
$343
Find Deal
mar., oct. 7 - mar., oct. 14
WestJet Logo
7:00 am - 12:59 pmYUL-SEA
8h 59m1 stop
WestJet Logo
8:40 am - 12:27 amSEA-YUL
12h 47m2 stops
$345WestJet
Find Deal
sáb., oct. 18 - sáb., oct. 25
Delta Logo
6:00 am - 12:23 pmYUL-SEA
9h 23m2 stops
Delta Logo
9:29 am - 11:21 pmSEA-YUL
10h 52m2 stops
$388Delta
Find Deal
mié., oct. 22 - mar., nov. 4
United Airlines Logo
3:41 pm - 10:17 pmYUL-SEA
9h 36m1 stop
United Airlines Logo
3:28 pm - 8:16 amSEA-YUL
13h 48m1 stop
$405United Airlines
Find Deal
vie., oct. 3 - mar., oct. 14
United Airlines Logo
6:15 am - 11:15 pmYUL-SEA
20h 00m2 stops
United Airlines Logo
11:40 pm - 10:40 amSEA-YUL
8h 00m1 stop
$407United Airlines
Find Deal
mar., sep. 30 - lun., oct. 13

Air Canada flights from Montreal to Seattle

Our best Air Canada deals on Montreal to Seattle flight tickets
Air Canada
Oct 7
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
5h 46m
SEA7:31 pmSeattle/Tacoma Intl
Oct 14
SEA7:15 amSeattle/Tacoma Intl
5h 13m
YUL3:28 pmMontreal Pierre Elliott Trudeau Intl
$309
Find similar
Air Canada
Oct 22
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
9h 46m
1 stop
SEA2:16 pmSeattle/Tacoma Intl
Nov 4
SEA5:50 amSeattle/Tacoma Intl
8h 10m
1 stop
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
$320
Find similar
Air Canada
Oct 7
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
7h 59m
1 stop
SEA10:59 amSeattle/Tacoma Intl
Oct 14
SEA7:15 amSeattle/Tacoma Intl
5h 13m
YUL3:28 pmMontreal Pierre Elliott Trudeau Intl
$321
Find similar

WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets
WestJet
Oct 18
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
Oct 25
SEA1:50 pmSeattle/Tacoma Intl
7h 51m
1 stop
YUL12:41 amMontreal Pierre Elliott Trudeau Intl
$328
Find similar
WestJet
Oct 18
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
Oct 25
SEA8:40 amSeattle/Tacoma Intl
12h 47m
2 stops
YUL12:27 amMontreal Pierre Elliott Trudeau Intl
$345
Find similar
WestJet
Oct 22
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
8h 59m
1 stop
SEA12:59 pmSeattle/Tacoma Intl
Oct 28
SEA3:10 pmSeattle/Tacoma Intl
21h 02m
1 stop
YUL3:12 pmMontreal Pierre Elliott Trudeau Intl
$352
Find similar

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 agosto 25, 2025.
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

mar. 10/7

4:45 pm-7:31 pm

Nonstop5h 46m

Seattle/Tacoma Intl

mar. 10/14

7:15 am-3:28 pm

Nonstop5h 13m

$309

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mié. 10/22

7:30 am-2:16 pm

1 stop9h 46m

Seattle/Tacoma Intl

mar. 11/4

5:50 am-5:00 pm

1 stop8h 10m

$320

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mar. 10/7

6:00 am-10:59 am

1 stop7h 59m

Seattle/Tacoma Intl

mar. 10/14

7:15 am-3:28 pm

Nonstop5h 13m

$321

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

sáb. 10/18

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

sáb. 10/25

1:50 pm-12:41 am

1 stop7h 51m

$328

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mié. 10/22

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

mié. 10/29

3:10 pm-1:32 pm

1 stop19h 22m

$341

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mar. 10/7

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

mar. 10/14

2:05 pm-2:10 pm

1 stop21h 05m

$343

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

sáb. 10/18

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

sáb. 10/25

8:40 am-12:27 am

2 stops12h 47m

$345

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mié. 10/22

6:00 am-12:23 pm

2 stops9h 23m

Seattle/Tacoma Intl

mar. 11/4

9:29 am-11:21 pm

2 stops10h 52m

$388

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

vie. 10/3

3:41 pm-10:17 pm

1 stop9h 36m

Seattle/Tacoma Intl

mar. 10/14

3:28 pm-8:16 am

1 stop13h 48m

$405

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

mar. 9/30

6:15 am-11:15 pm

2 stops20h 00m

Seattle/Tacoma Intl

lun. 10/13

11:40 pm-10:40 am

1 stop8h 00m

$407

Flights are sorted by cheapest round-trip flights first.

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

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, October 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 $487. If you don’t want to visit Seattle in October, then you should wait until August to fly from Montreal, when ticket prices are also cheap, with an average price of $491.

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 $282. 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 time of day to depart on your flight to Seattle?

Flying to Seattle from Montreal in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $362 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $503. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $505 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 5% 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 August 2025, prices for Montreal to Seattle flights are approximately 16% more expensive 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

Best Price Found

$270

Fastest flight time

5h 46m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Montreal in the past 72 hours is $270. The best round-trip flight deal from Montreal to Seattle found on momondo in the last 72 hours is $361.
The fastest flight from Montreal to Seattle takes 5h 46m
Direct flights go from Montreal to Seattle every day.
There is 1 airport near Seattle: 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 46m 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 $270Free CancellationRating
7.2
3,050 reviews
Search WestJet flights
Air CanadaPriceFrom $358Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

  • Air Canada Flights From Montreal to Seattle

    Air Canada flight deals from Montreal to Seattle start from $358 round-trip. Over the 7 Air Canada flights for this route in a normal week, average airfare is usually $489 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Cle Elum
Tukwila
Kirkland
Centralia
Lakewood
Shoreline
Fife
Redmond
Westport

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.

An easier way to manage your Seattle 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
sáb. 8/30
sáb. 9/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States