$139 Cheap American Airlines flights Gulfport (GPT) to San Diego (SAN)

Landing cheap one-way American Airlines flights from GPT to SAN from $139 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $277 for your next exciting vacation.**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.

Browse for return or one-way flights to San Diego in January or November. You could find lower fares with American Airlines during these off-peak months.

Start searching one to three months ahead of your travel date to find cheaper fares on American Airlines flights from Gulfport - Biloxi Intl. Airport (GPT) 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.* Get your timing right, and you can enjoy significant savings on domestic flights.*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 see if there’s a direct trip from GPT to SAN with American Airlines or another airline, select the “Nonstop” filter when browsing for flights.

Find American Airlines’s earliest flights from GPT to SAN by selecting the “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**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.

American Airlines flights from Gulfport - Biloxi Intl. Airport (GPT) to San Diego arrive at San Diego Intl. Airport (SAN). This is the main gateway to this city.

Changes are generally free within 24 hours of making your booking, but your airline may charge you after that time. For further details about modifying your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your itinerary without being charged, apply the “Changes included” or “No cancel fee” filter when organizing your next break.