$117 Cheap Frontier Airlines flights St. Louis (STL) to Orange County (SNA)

Make use of the “Price (lowest to highest)” filter on Expedia to search for cheap Frontier Airlines round-trip flights from $184 from STL to SNA. Affordable one-way options from $117 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to fly to Santa Ana with Frontier Airlines. You could also find great deals on one-way and round-trip tickets in April.

Begin your search one to three months ahead of your departure date to score cheap fares on Frontier Airlines flights from Lambert-St. Louis Intl. Airport (STL) to John Wayne Airport (SNA). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic journeys.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, press search and use the “Nonstop” filter on Expedia to browse any direct flights from STL to SNA with Frontier Airlines or other carriers.

Find Frontier Airlines’s earliest flights from STL to SNA by using the “Morning” and “Early Morning” filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Frontier Airlines flights from Lambert-St. Louis Intl. Airport (STL) to Santa Ana touch down at John Wayne Airport (SNA). This is the main entry point to this city.

A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to travel from STL to SNA with Frontier Airlines. Plus, when you join our One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It’s yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee will generally apply if you modify or cancel your booking more than 24 hours after it’s confirmed. To secure flexible fares, select our “Changes included” and “No cancel fee” boxes when you look for flights. For additional information on changing or canceling your reservation, head to “Trips,” select your flight and click on “Manage Booking.”