$94 Cheap Frontier Airlines flights San Antonio (SAT) to Phoenix (PHX)

You’ll find affordable round-trip Frontier Airlines flights from $188 from SAT to PHX by filtering your results from “Price (lowest to highest)” on Expedia. Or search for options from $94 for a one-way journey.**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.

Frontier Airlines flights to Phoenix tend to be more affordable in the quieter months of July and August. Whether you’re searching for a round-trip or one-way ticket, you could land a better deal then.

To find cheap Frontier Airlines fares from San Antonio Intl. Airport (SAT) to Sky Harbor Intl. Airport (PHX), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday tends to be the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**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.

Use our “Nonstop” filter when looking for direct Frontier Airlines flights from SAT to PHX. It’s also a good way to compare other airlines servicing the same direct trip.

To find the earliest departure from SAT to PHX with Frontier Airlines, filter your search by “Early Morning” and “Morning.” Booking an early flight usually means cancellations are less likely.**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.

Board a Frontier Airlines flight from San Antonio Intl. Airport (SAT) to Phoenix, and you’ll probably come in to Sky Harbor Intl. Airport (PHX). This is the airline’s primary hub in this city.

A rewarding loyalty program and the ability to rack up points through Frontier Miles are the start of the reasons to travel from SAT to PHX with Frontier Airlines. Plus, by joining Expedia’s free One Key™ program, you can earn OneKeyCash™* in addition to any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee may apply if you cancel or change your flight more than 24 hours after confirmation. To find flexible fares, select our “No cancel fee” or “Changes included” filter when you search for flights. To learn more about canceling or changing your reservation, go to “Trips,” select your flight and click on “Manage Booking.”