Cheap Flights to Keystone

View ₩122,600 flight on Tue, Oct 7, 2025Opens in a new window

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How much is the cheapest flight to Keystone?

Prices were available within the past 7 days and start at ₩122,600 for one-way flights and ₩191,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Oct 1 - Wed, Oct 8
SFO
San Francisco
PAE
Seattle
₩191,400 Roundtrip, found 6 days ago
₩191,400
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Wed, Oct 1 from San Francisco to Seattle, returning Wed, Oct 8, priced at ₩191,400 found 6 days ago
Hawaiian Airlines
Sat, Sep 20 - Wed, Sep 24
SFO
San Francisco
PAE
Seattle
₩233,700 Roundtrip, found 3 days ago
₩233,700
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sat, Sep 20 from San Francisco to Seattle, returning Wed, Sep 24, priced at ₩233,700 found 3 days ago
Hawaiian Airlines
Sat, Oct 4 - Sun, Oct 5
SFO
San Francisco
PAE
Seattle
₩272,800 Roundtrip, found 2 days ago
₩272,800
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from San Francisco to Seattle, returning Sun, Oct 5, priced at ₩272,800 found 2 days ago
Hawaiian Airlines
Sat, Sep 20 - Wed, Sep 24
SFO
San Francisco
PAE
Seattle
₩275,700 Roundtrip, found 3 days ago
₩275,700
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sat, Sep 20 from San Francisco to Seattle, returning Wed, Sep 24, priced at ₩275,700 found 3 days ago
American Airlines
Tue, Oct 7 - Tue, Oct 14
SFO
San Francisco
PAE
Seattle
₩331,500 Roundtrip, found 3 days ago
₩331,500
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Oct 7 from San Francisco to Seattle, returning Tue, Oct 14, priced at ₩331,500 found 3 days ago

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

Flights to Keystone information
Destination airport
Seattle Paine Field Intl. Airport
Destination airport IATA code
PAE
Destination city name
Seattle Paine Field Intl. Airport
Roundtrip price
₩191,400
*Available to Expedia members.