CA $314 Cheap Air Canada fights from Montreal (YUL) to Seattle (SEA)

View CA $314 flight on Wed, Oct. 8, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Air Canada flights from Montreal to Seattle (YUL→SEA)

Prices were available within the past 7 days and start at CA $314 for one-way flights and CA $458 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Oct. 9 - Sat, Oct. 11
YUL
Montreal
SEA
Seattle
CA $458 Roundtrip, found 1 day ago
CA $458
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct. 9 from Montreal to Seattle, returning Sat, Oct. 11, priced at CA $458 found 1 day ago
Air Canada
Wed, Oct. 8 - Fri, Oct. 10
YUL
Montreal
SEA
Seattle
CA $458 Roundtrip, found 1 day ago
CA $458
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Oct. 8 from Montreal to Seattle, returning Fri, Oct. 10, priced at CA $458 found 1 day ago
Air Canada
Wed, Oct. 8 - Fri, Oct. 10
YUL
Montreal
SEA
Seattle
CA $487 Roundtrip, found 1 day ago
CA $487
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Oct. 8 from Montreal to Seattle, returning Fri, Oct. 10, priced at CA $487 found 1 day ago
Air Canada
Tue, Oct. 7 - Thu, Oct. 9
YUL
Montreal
SEA
Seattle
CA $490 Roundtrip, found 1 day ago
CA $490
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Oct. 7 from Montreal to Seattle, returning Thu, Oct. 9, priced at CA $490 found 1 day ago
Air Canada
Thu, Oct. 9 - Sat, Oct. 11
YUL
Montreal
SEA
Seattle
CA $492 Roundtrip, found 1 day ago
CA $492
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct. 9 from Montreal to Seattle, returning Sat, Oct. 11, priced at CA $492 found 1 day ago
Air Canada
Thu, Oct. 9 - Sat, Oct. 11
YUL
Montreal
SEA
Seattle
CA $496 Roundtrip, found 1 day ago
CA $496
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct. 9 from Montreal to Seattle, returning Sat, Oct. 11, priced at CA $496 found 1 day ago
Air Canada
Sat, Oct. 4 - Mon, Oct. 6
YUL
Montreal
SEA
Seattle
CA $498 Roundtrip, found 1 day ago
CA $498
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Oct. 4 from Montreal to Seattle, returning Mon, Oct. 6, priced at CA $498 found 1 day ago
Air Canada
Tue, Oct. 7 - Thu, Oct. 9
YUL
Montreal
SEA
Seattle
CA $499 Roundtrip, found 1 day ago
CA $499
Roundtrip
found 1 day ago
Select Air Canada flight, departing Tue, Oct. 7 from Montreal to Seattle, returning Thu, Oct. 9, priced at CA $499 found 1 day ago
Air Canada
Thu, Oct. 9 - Sat, Oct. 11
YUL
Montreal
SEA
Seattle
CA $501 Roundtrip, found 1 day ago
CA $501
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct. 9 from Montreal to Seattle, returning Sat, Oct. 11, priced at CA $501 found 1 day ago
Air Canada
Sat, Oct. 4 - Mon, Oct. 6
YUL
Montreal
SEA
Seattle
CA $501 Roundtrip, found 1 day ago
CA $501
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Oct. 4 from Montreal to Seattle, returning Mon, Oct. 6, priced at CA $501 found 1 day ago
Air Canada
Fri, Sep. 12 - Sun, Sep. 14
YUL
Montreal
SEA
Seattle
CA $503 Roundtrip, found 1 day ago
CA $503
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Sep. 12 from Montreal to Seattle, returning Sun, Sep. 14, priced at CA $503 found 1 day ago
0
Flight from Montreal to Seattle (YUL - SEA) route information
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, American Airlines, Delta, United, WestJet
Popular airline
American Airlines
Distance
3643 km
*Available to Expedia members.