£75 Find Cheap Flights from Austin to San Diego – Compare and Save

Among airlines operating Austin to San Diego flights:

• Southwest: offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection
• American Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

2 airlines operate flights between Austin and San Diego. The airlines offering direct flights on this route include:

• Southwest
• Alaska Airlines

Flights from Austin to San Diego usually depart from Austin Bergstrom (AUS) and arrive at San Diego (SAN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy class
• Alaska Airlines: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Business Class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Two cabin classes are available on flights from Austin to San Diego:

• Economy class
• Business Class

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £200 return via Denver Intl (DEN), compared with £227 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £30–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Embraer 170 variants.

One-stop flights from Austin to San Diego most commonly connect through:

• Denver Intl (DEN) – 50% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) – 21% of one-stop connections
• Los Angeles Los Angeles (LAX) – 12% of one-stop connections
• Houston George Bush Intcntl (IAH) – 6% of one-stop connections

Denver Intl (DEN) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 20% on the Austin to San Diego route. Thursday is the cheapest departure day at £208 return on average, while Sunday is the most expensive at £259, a difference of £51. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Austin to San Diego flights, with 38% leaving in that window. Afternoon departures account for 37%, Evening flights for 25%, and Night flights for 0%.

Some of the most popular sights in San Diego are San Diego Convention Center, SDSU Downtown Gallery, and La Jolla Cove. These are among the most viewed places in San Diego on KAYAK.

These are the earliest and latest flight times available from Austin to San Diego:

• Earliest: departs at 06:00 and lands at 09:12
• Latest: departs at 22:25 and lands at 01:37.

The flight takes about 3h 12m.

Last-minute fares on this route (booked within 2 weeks of departure) run 45% above the route average of £224. Book 6 weeks before departure for the lowest fares.

A direct flight from Austin to San Diego takes 3h 12m, covering 1,162 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £169 to £1,572. That means the highest observed fare was about 9x higher than the lowest one.

One-way fares from Austin to San Diego are currently lower than usual. Average one-way flight prices are about £84, which is 40% below the typical average for this route.

Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time of 4h 57m, compared to 5h 22m via Dallas/Fort Worth (DFW) and 5h 45m via Los Angeles Los Angeles (LAX).

San Diego is 2 hours behind Austin (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

San Diego Airport (SAN) hosts 5 major car hire companies, with daily rates starting from around £10 for economy cars. Top options include:
• Dollar
• Payless
• Europcar
• Thrifty
• Fox

Return flights from Austin to San Diego range from £153 to £298, with an average of £224 over the past 12 months. Anything below £153 counts as a good deal.

Two airlines offer in-flight Wi-Fi on Austin to San Diego flights:

• Alaska Airlines
• JetBlue

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.