$44 Cheap Frontier Airlines flights Salt Lake City (SLC) to San Diego (SAN)

Landing cheap one-way Frontier Airlines flights from SLC to SAN from $44 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $88 for your next getaway.**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 least expensive months to travel to San Diego with Frontier Airlines. You could also find great deals on one-way and return tickets in November.

Search for cheap Frontier Airlines flights from Salt Lake City Intl. Airport (SLC) to San Diego Intl. Airport (SAN) one to three months before your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

To find out if there’s a direct journey from SLC to SAN with Frontier Airlines or other airlines, check the “Nonstop” box when looking for flights.

To find the earliest departures from SLC to SAN with Frontier Airlines, sort your results by “Early Morning” and “Morning.” Booking an early flight generally means you’re less likely to experience 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.

San Diego Intl. Airport (SAN) is the main San Diego gateway for Frontier Airlines flights from Salt Lake City Intl. Airport (SLC).

A rewarding loyalty program and the opportunity to collect points through Frontier Miles are the start of the reasons to jet off from SLC to SAN with Frontier Airlines. Plus, by joining Expedia’s free One Key™ program, you can receive OneKeyCash™* alongside Frontier Airlines’s 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.

Changes are often free within 24 hours of making your booking, but your airline may add a charge after that. For more information about modifying your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to change your itinerary without being charged, tick the “No cancel fee” or “Changes included” filter when organizing your next adventure.