Cheap Flights San Diego to Austin from £57

Flight FAQs

• Which airlines offer the cheapest flights from San Diego to Austin?

  Based on Trip.com data, Frontier Airlines offers Cheapest nonstop one-way flights from £57 (for example, SAN–AUS on Sat, Oct 24). For a Cheapest nonstop return flight, Frontier Airlines offers fares from £112, departing on Sat, Oct 31 and returning on Thu, Nov 5.

• Which airlines offer direct flights from San Diego to Austin?

  At the moment, you can catch a direct flight from San Diego to Austin with the following airlines, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from San Diego to Austin?

  A flight from San Diego (SAN) to Austin (AUS) takes an average of 3 hours 1 minute.

• When is the best time to book flights from San Diego to Austin?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Diego to Austin is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there from San Diego to Austin each week?

  On average, 45 direct flights operate each week between San Diego and Austin. See below the schedules of the main airlines serving this route:
  Alaska Airlines: S/M/T/W/T/F/S – AS3300 (departure at 15:39) Alaska Airlines: S/M/T/W/T/F/S – AS3464 (departure at 08:29)

• How can I find the best deals on flights from San Diego to Austin?

  Here are some tips for finding the best flight deals from San Diego to Austin on Trip.com:
  · Be flexible with your travel dates. The cheapest flight is currently on Sat, Oct 24, with one-way fares from just £57.
  · Compare airlines. Alaska Airlines currently offers the lowest fares on this route.
  · Set up a price alert to track fare changes without searching every day.
  · Check Trip.com regularly for flight deals and available promo codes.
  · Avoid peak season or book early. July is generally the busiest month for travel to Austin.
  · Get exclusive promo codes on the Trip.com app.

• When is the best time to book a flight from San Diego to Austin to get the best price?

  The cheapest month to book a flight from San Diego to Austin is usually November, when demand is lower.

• Which upcoming date is the cheapest for flights from San Diego to Austin?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from San Diego to Austin on September 24, 2026 with Frontier Airlines, with prices starting at £60.

• Which airports should you choose for flights from San Diego to Austin?

  Flights to Austin can arrive at: Austin-Bergstrom International Airport (AUS). The most common route connects San Diego International Airport and Austin-Bergstrom International Airport (SAN–AUS).

• What is the time difference between San Diego and Austin?

  The time difference between Austin and San Diego is 2h.

• How can I change or cancel my flight ticket from San Diego to Austin?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average price of a one-way flight from San Diego to Austin?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from San Diego to Austin is £159. Fares vary by travel date, airline and availability.

• What is the average price of a return flight from San Diego to Austin?

  Based on Trip.com data for flights departing in the next 30 days, the average return fare from San Diego to Austin is £272. Fares vary by travel date, airline and availability.

• How do I book flights from San Diego to Austin on Trip.com?

  Enter San Diego and Austin, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveller details and complete payment to receive your confirmation.

• Are there budget airlines on the San Diego to Austin route?

  Frontier Airlinesare the most popular budget airlines flying from San Diego to Austin. Check baggage, seat and payment fees before comparing the final price.