A mountain lake surrounded by dense forests and rocky terrain.

Cheap Flights to Boundary County from $72

View $72 flight on Sun, Dec 6, 2026Opens in a new window

Popular airlines to Boundary County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • British Airways

  • KLM

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How much is the cheapest flight to Boundary County?

Prices were available within the past 7 days and start at $72 for one-way flights and $141 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Excursions LLC
Mon, Aug 10 - Wed, Aug 12
BFI
Seattle
SFF
Spokane
$338 Roundtrip, found 1 hour ago
$338
Roundtrip
found 1 hour ago
Select Air Excursions LLC flight, departing Mon, Aug 10 from Seattle to Spokane, returning Wed, Aug 12, priced at $338 found 1 hour ago
Air Excursions LLC
Mon, Aug 10 - Wed, Aug 12
BFI
Seattle
SFF
Spokane
$369 Roundtrip, found 1 hour ago
$369
Roundtrip
found 1 hour ago
Select Air Excursions LLC flight, departing Mon, Aug 10 from Seattle to Spokane, returning Wed, Aug 12, priced at $369 found 1 hour ago
Air Excursions LLC
Thu, Jul 16 - Mon, Jul 20
BFI
Seattle
SFF
Spokane
$398 Roundtrip, found 10 hours ago
$398
Roundtrip
found 10 hours ago
Select Air Excursions LLC flight, departing Thu, Jul 16 from Seattle to Spokane, returning Mon, Jul 20, priced at $398 found 10 hours ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$468 Roundtrip, found 5 days ago
$468
Roundtrip
found 5 days ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $468 found 5 days ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$499 Roundtrip, found 5 days ago
$499
Roundtrip
found 5 days ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $499 found 5 days ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$538 Roundtrip, found 3 days ago
$538
Roundtrip
found 3 days ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $538 found 3 days ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$568 Roundtrip, found 5 days ago
$568
Roundtrip
found 5 days ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $568 found 5 days ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$588 Roundtrip, found 1 day ago
$588
Roundtrip
found 1 day ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $588 found 1 day ago
Air Excursions LLC
Mon, Jul 6 - Fri, Jul 10
BFI
Seattle
SFF
Spokane
$598 Roundtrip, found 5 days ago
$598
Roundtrip
found 5 days ago
Select Air Excursions LLC flight, departing Mon, Jul 6 from Seattle to Spokane, returning Fri, Jul 10, priced at $598 found 5 days ago

Trending flights to Boundary County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Aug 20 - Sun, Aug 23
SAN
San Diego
GEG
Spokane
$141 Roundtrip, found 23 hours ago
$141
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Aug 20 from San Diego to Spokane, returning Sun, Aug 23, priced at $141 found 23 hours ago

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Travel information

*Flight schedules are subject to change.

*Available to One Key members.

 

*Flight schedules are subject to change.

*Available to One Key members.

 

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