S$248 Cheap Flights from Montreal to Seattle

View S$248 flight on Wed, 3 Sep, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Montreal to Seattle (YUL-SEA)

Prices were available within the past 7 days and start at S$248 for one-way flights and S$428 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$428 Return, found 16 hours ago
S$428
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$428 found 16 hours ago
Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$428 Return, found 16 hours ago
S$428
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$428 found 16 hours ago
American Airlines
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$436 Return, found 16 hours ago
S$436
Return
found 16 hours ago
Select American Airlines flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$436 found 16 hours ago
Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$437 Return, found 16 hours ago
S$437
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$437 found 16 hours ago
Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$453 Return, found 16 hours ago
S$453
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$453 found 16 hours ago
WestJet
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$461 Return, found 16 hours ago
S$461
Return
found 16 hours ago
Select WestJet flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$461 found 16 hours ago
Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$461 Return, found 16 hours ago
S$461
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$461 found 16 hours ago
Air Canada
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$469 Return, found 16 hours ago
S$469
Return
found 16 hours ago
Select Air Canada flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$469 found 16 hours ago
United
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$481 Return, found 16 hours ago
S$481
Return
found 16 hours ago
Select United flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$481 found 16 hours ago
Delta
Thu, 4 Sep - Wed, 10 Sep
YUL
Montreal
SEA
Seattle
S$539 Return, found 16 hours ago
S$539
Return
found 16 hours ago
Select Delta flight, departing Thu, 4 Sep from Montreal to Seattle, returning Wed, 10 Sep, priced at S$539 found 16 hours ago

Find the cheapest month to fly from Montreal (YUL) to Seattle (SEA)

May is typically the cheapest month to fly

From S$357 - S$766 per traveller.

Graph displaying average flight prices per month

Montreal to Seattle route information
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, American Airlines, Delta, United, WestJet
Return price
S$428
Distance
3643 km
Average flight time
5 hours 56 mins

Flights from Montreal to Seattle

There are several airlines that operate frequent flights from Montreal (YUL) to Seattle (SEA) including

The earliest flight leaves Pierre Elliott Trudeau Intl. Airport at 05:30 and arrives at Seattle Tacoma Intl. Airport at 00:04. The last flight of the day departs Montreal at 20:00 and arrives at Seattle at 23:59.

The flight distance from Montreal to Seattle is about 4145 km, the shortest flight is 07 hours 31 minutes with WestJet.

Expedia lets you search across the largest number of airlines and Seattle flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Montreal Seattle flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Montreal to Seattle trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Seattle flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Montreal to Seattle with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Seattle - Tacoma Intl. Airport (SEA)?
Start packing your bags, because round-trip flights from Montréal--Trudeau to SEA start from S$428. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Montréal--Trudeau to Sea-Tac Airport?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Montréal--Trudeau to Sea-Tac Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Pierre Elliott Trudeau Intl. Airport (YUL) to Seattle - Tacoma Intl. Airport (SEA) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Sea-Tac Airport?
The flight distance between YUL (YUL) and Sea-Tac Airport (SEA) is 3,700 kilometres. Listen to your favourite tunes or make a start on the latest bestseller and the trip will zip on by.
Which airlines fly direct from YUL to SEA?
Air Canada (AC) will fly you from Montreal Airport to Seattle - Tacoma Intl. Airport (SEA) comfortably and reliably. You can choose from 17 direct flights every month on this route.
Are Montréal--Trudeau to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Flight prices go up and down like a yo-yo, so it's no sure thing. While last-minute deals between Montréal--Trudeau and Sea-Tac Airport are of course possible, it also makes sense to keep an eye on prices well before you fly. In fact, some air carriers release their prices up to 12 months before the departure date. Expedia is continuously updating the biggest bargains around, so check back often and be ready to grab your seat when the price dips.

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