$114 Cheap Frontier Airlines flights Pittsburgh (PIT) to San Diego (SAN)

You’ll discover affordable return Frontier Airlines flights from $192 from PIT to SAN by sorting your results from “Price (lowest to highest)” on Expedia. Or search for deals from $114 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 San Diego are often cheaper in the quieter months of January and November. Whether you’re searching for a round-trip or one-way ticket, you could score a better deal then.

Start searching one to three months before your departure to score cheap fares on Frontier Airlines flights from Pittsburgh Intl. Airport (PIT) to San Diego Intl. Airport (SAN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus 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.* Nail your timing, and you can enjoy significant savings on domestic trips.*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.

Fill in your dates, press search and select the “Nonstop” filter on Expedia to browse any direct flights from PIT to SAN with Frontier Airlines or other airlines.

Search Frontier Airlines’s earliest flights from PIT to SAN by checking our “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.

San Diego Intl. Airport (SAN) is the primary San Diego hub for Frontier Airlines flights from Pittsburgh Intl. Airport (PIT).

Fly from PIT to SAN with Frontier Airlines and look forward to a host of benefits including a rewarding loyalty program. When booking through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to spend on select future travel purchases.*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 typically applies if you cancel or change your flight more than 24 hours after it’s confirmed. To secure flexible fares, select our “Changes included” and “No cancel fee” boxes while looking for flights. To learn more about modifying or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”