A mountain lake surrounded by dense forests and rocky terrain.

Cheap Flights to Boundary County from $199

View $199 flight on Fri, Nov 6, 2026Opens in a new window

Popular airlines to Boundary County

  • Alaska Airlines

  • Delta

  • United

  • American Airlines

  • Southwest Airlines

  • British Airways

  • Lufthansa

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

How much is the cheapest flight to Boundary County?

Prices were available within the past 7 days and start at $199 for one-way flights and $398 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC
Air Excursions LLC

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.

Air Excursions LLC

Book with confidence

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Travel information

*Flight schedules are subject to change.

*Available to One Key members.

*Flight schedules are subject to change.

*Available to One Key members.

Explore a world of travel with Expedia