Cheap Flights from Montreal (YUL) to Seattle (SEA) from HK$2,103~

View HK$2,103 flight on Thu, 14 May 2026Opens in a new window

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

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Find Cheap Flights from Montreal (YUL) to Seattle (SEA)

Prices were available within the past 7 days and start at HK$2,103 for one-way flights and HK$4,622 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$4,622 Return, found 4 days ago
HK$4,622
Return
found 4 days ago
Select Air Canada flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$4,622 found 4 days ago
Air Canada
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$4,707 Return, found 4 days ago
HK$4,707
Return
found 4 days ago
Select Air Canada flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$4,707 found 4 days ago
Delta
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$4,807 Return, found 4 days ago
HK$4,807
Return
found 4 days ago
Select Delta flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$4,807 found 4 days ago
Delta
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$4,837 Return, found 4 days ago
HK$4,837
Return
found 4 days ago
Select Delta flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$4,837 found 4 days ago
Air Canada
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$4,907 Return, found 4 days ago
HK$4,907
Return
found 4 days ago
Select Air Canada flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$4,907 found 4 days ago
American Airlines
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$5,048 Return, found 4 days ago
HK$5,048
Return
found 4 days ago
Select American Airlines flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$5,048 found 4 days ago
American Airlines
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$5,078 Return, found 4 days ago
HK$5,078
Return
found 4 days ago
Select American Airlines flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$5,078 found 4 days ago
Air Canada
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$5,085 Return, found 4 days ago
HK$5,085
Return
found 4 days ago
Select Air Canada flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$5,085 found 4 days ago
United
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$5,393 Return, found 4 days ago
HK$5,393
Return
found 4 days ago
Select United flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$5,393 found 4 days ago
WestJet
Thu, 14 May - Mon, 18 May
YUL
Montreal
SEA
Seattle
HK$6,591 Return, found 4 days ago
HK$6,591
Return
found 4 days ago
Select WestJet flight, departing Thu, 14 May from Montreal to Seattle, returning Mon, 18 May, priced at HK$6,591 found 4 days ago

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 HK$4,622. 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 kilometers. Listen to your favorite 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.

Travel information

Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
HK$4,622
Distance
3643 km

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