Cheap Flights to Seattle - Tacoma Intl.

View ₩113,700 flight on Fri, Dec 5, 2025Opens in a new window

Popular airlines to Seattle-Tacoma International Airport (SEA)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Seattle - Tacoma Intl.?

Prices were available within the past 7 days and start at ₩113,700 for one-way flights and ₩170,200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Fri, Dec 5 - Fri, Dec 12
ONT
Ontario
SEA
Seattle
₩170,200 Roundtrip, found 4 days ago
₩170,200
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Fri, Dec 5 from Ontario to Seattle, returning Fri, Dec 12, priced at ₩170,200 found 4 days ago
Delta
Fri, Jan 16 - Sun, Jan 18
ONT
Ontario
SEA
Seattle
₩171,500 Roundtrip, found 3 days ago
₩171,500
Roundtrip
found 3 days ago
Select Delta flight, departing Fri, Jan 16 from Ontario to Seattle, returning Sun, Jan 18, priced at ₩171,500 found 3 days ago
Alaska Airlines
Tue, Dec 9 - Thu, Dec 11
ONT
Ontario
SEA
Seattle
₩229,700 Roundtrip, found 2 days ago
₩229,700
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Ontario to Seattle, returning Thu, Dec 11, priced at ₩229,700 found 2 days ago
American Airlines
Sat, Dec 6 - Sun, Dec 7
LAX
Los Angeles
SEA
Seattle
₩339,100 Roundtrip, found 6 days ago
₩339,100
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Dec 6 from Los Angeles to Seattle, returning Sun, Dec 7, priced at ₩339,100 found 6 days ago
United
Fri, Jan 16 - Sun, Jan 18
ONT
Ontario
SEA
Seattle
₩355,100 Roundtrip, found 3 days ago
₩355,100
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 16 from Ontario to Seattle, returning Sun, Jan 18, priced at ₩355,100 found 3 days ago

Find the cheapest month to fly from Columbus (CMH) to Seattle (SEA)

January is typically the cheapest month to fly

From ₩192,530 - ₩440,599 per traveler.

Searching for cheap flights to Seattle - Tacoma Intl.? No travel company presents more choices than Expedia if you're looking to compare flights to Seattle - Tacoma Intl.. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Seattle. Expedia provides the cheapest flights to many destinations in Seattle and you may find even greater savings if you combine your flight with a hotel stay in Seattle - Tacoma Intl..

Flights to Seattle - Tacoma Intl. information
Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Airlines serving
Air Canada, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United, WestJet
Roundtrip price
₩224,300
Popular airline
Delta

Trending flights to Seattle - Tacoma Intl.

Prices were available within the past 7 days and start at ₩113,700 for one-way flights and ₩170,200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Nov 18 - Mon, Dec 1
ICN
Seoul
SEA
Seattle
₩776,800 Roundtrip, found 3 days ago
₩776,800
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Nov 18 from Seoul to Seattle, returning Mon, Dec 1, priced at ₩776,800 found 3 days ago
*Available to Expedia members.