$80 Cheap American Airlines flights Austin (AUS) to San Diego (SAN)

Finding cheap one-way American Airlines flights from AUS to SAN from $80 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares from $159 for your next exciting adventure.**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 get away to San Diego with American Airlines. You could also find great prices on return and one-way fares in November.

Begin your search one to three months ahead of your travel date to get cheap fares on American Airlines flights from Austin-Bergstrom Intl. Airport (AUS) 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 reduce 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 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.

Select our “Nonstop” filter when searching for direct American Airlines flights from AUS to SAN. You can also compare other carriers offering the same nonstop trip.

Find American Airlines’s earliest flights from AUS to SAN by using the “Morning” and “Early Morning” filters. Not only will you get to where you’re going 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 main San Diego hub for American Airlines flights from Austin-Bergstrom Intl. Airport (AUS).

American Airlines generally operates Embraer 175 planes for journeys from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN). Keep in mind that aircraft type can change depending on operational requirements, so the plane you’ll be on might be different on your day of travel.

Depending on your ticket type, a fee typically applies if you cancel or reschedule your flight more than 24 hours after it has been confirmed. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you look for flights. For more information on canceling or modifying your reservation, go to “Trips,” select your flight and tick “Manage Booking.”