A calm lake with reflections of trees and reeds.

Cheap Flights to St. Clair County from $193

View $193 flight on Thu, Oct 29, 2026Opens in a new window

Popular airlines to St. Clair County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Alaska Airlines

  • Frontier Airlines

  • Air Canada

  • 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 St. Clair County?

Prices were available within the past 7 days and start at $193 for one-way flights and $291 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
United
United
American Airlines
United
American Airlines
United
United
Delta
Alaska Airlines

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