$78 Cheap Flights from Austin (AUS) to San Diego (SAN)
Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to San Diego Intl. Airport (SAN)
Alaska AirlinesAlaska Airlines
Frontier AirlinesFrontier Airlines
American AirlinesAmerican Airlines
Southwest AirlinesSouthwest Airlines
UnitedUnited
DeltaDelta
JetBlue AirwaysJetBlue Airways
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Cheap Flights from Austin to San Diego (AUS-SAN)
Alternative airports near San Diego
Prices were available within the past 7 days. Prices and availability are subject to change.
Find the cheapest month to fly from Austin (AUS) to San Diego (SAN)
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Austin (AUS) to San Diego (SAN) at a glance
Travel from Austin (AUS) to San Diego (SAN) with a selection of airlines offering weekly flights on this domestic short-haul route. You can choose between full-service and low-cost carriers to find the best flight time and plan that aligns with your budget and schedule. As you prepare for your trip, discover the attractions and neighborhoods of San Diego, while reviewing essential details for flights from Austin-Bergstrom International Airport (AUS) to San Diego International Airport (SAN).
- Fastest flight duration: around 3h 15m non-stop
- Route distance: roughly 1,200 miles (1,930 km)
- Flights per week: around 40+ flights with multiple daily departures on average
- Typical fares (one-way): economy tickets often range from $55–$380, depending on seasonality and how far ahead you book
Flights from Austin-Bergstrom International Airport (AUS) to San Diego International Airport (SAN)
Based on recent traveler bookings, here are the top airlines favored for flights from Austin to San Diego, featuring both non-stop and one-stop options. Many travelers opt for connections through key layover airports such as Sky Harbor International Airport (PHX) with about a 1 hour and 15 minute layover, Denver International Airport (DEN) also with around a 1 hour and 15 minute layover, and Dallas-Fort Worth International Airport (DFW) with approximately a 1 hour layover. This variety allows you to customize your journey by balancing price, total travel time, and cabin class for your ideal itinerary.
- Southwest Airlines: Known for its low-cost options, this carrier provides both non-stop and one-stop flights. One-way fares generally range from $85 to $410, making up about 41% of departures on this route, with a typical non-stop flight duration of 3 hours and 15 minutes.
- Alaska Airlines: This full-service airline offers both non-stop and one-stop services, with one-way prices typically between $65 and $425. It represents around 27% of the departures on this route, with non-stop flights usually taking 3 hours and 15 minutes.
- American Airlines: A comprehensive service airline, it provides both non-stop and one-stop options, typically charging one-way fares from $90 to $400. It accounts for about 14% of departures, with one-stop flights taking around 4 hours and 15 minutes in the air, totaling about 5 hours and 30 minutes.
- Frontier Airlines: As a budget-friendly carrier, Frontier offers non-stop and one-stop services at competitive prices, with one-way fares ranging from $55 to $230. This airline holds approximately 10% of the departures on this route, with a usual non-stop journey time of 3 hours and 15 minutes.
- United: This full-service airline features one-stop service with one-way fares typically between $110 and $395. It accounts for roughly 4% of departures on this route, with an in-flight duration of 4 hours and 15 minutes, leading to a total trip time of about 5 hours and 30 minutes, including layover.
Travelers flying from Austin to San Diego can enhance their journey by upgrading to first class or business class options offered by both Alaska Airlines and American Airlines for a more comfortable experience.
Best time to fly from Austin (AUS) to San Diego (SAN)
The most popular months for travelers flying from Austin to San Diego are January, March, and April, when peak temperatures in San Diego reach up to 60.6°F in April. If you prefer quieter travel, consider November, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 62.6°F. For better deals, August usually offers the lowest average one-way fare around $163. Flight availability peaks in May, with approximately 53 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 33 flights per week.
- Cheapest time to fly: August usually offers good deals with average one-way fare around $163, roughly 10% cheaper than the yearly average.
- More budget-friendly months to fly: January, February, and October typically offer average one-way fares of around $166.
- Most flight options: May has the highest number of flights from Austin to San Diego, with approximately 53 flights per week, giving you more flexibility in scheduling your trip.
| Month | Temperature | Demand | Weekly Flights | Average one-way Fare |
| January | 57.4°F (14.1°C) | Moderately High | 33 | $165 |
| February | 56.8°F (13.8°C) | Average | 39 | $166 |
| March | 58.1°F (14.5°C) | Moderately High | 48 | $204 |
| April | 60.6°F (15.9°C) | Moderately High | 49 | $208 |
| May | 62.6°F (17.0°C) | Moderately Low | 53 | $203 |
| June | 66.4°F (19.1°C) | Average | 49 | $191 |
| July | 70.5°F (21.4°C) | Average | 51 | $178 |
| August | 72.3°F (22.4°C) | Average | 44 | $163 |
| September | 72.0°F (22.2°C) | Moderately Low | 40 | $176 |
| October | 68.2°F (20.1°C) | Average | 47 | $166 |
| November | 62.6°F (17.0°C) | Moderately Low | 45 | $173 |
| December | 57.4°F (14.1°C) | Average | 44 | $191 |
*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.
Alternative routes from Austin (AUS) to San Diego (SAN)
- San Antonio to San Diego (SAT-SAN): San Antonio International Airport (SAT) is located approximately 67 miles from Austin-Bergstrom International Airport (AUS). One-way economy fares for this journey generally vary between $95 and $415, influenced by the time of year and how far in advance tickets are booked. Travelers can choose from both non-stop and one-stop flights, with common layover locations being Sky Harbor International Airport (PHX) and Dallas-Fort Worth International Airport (DFW). Major carriers operating on this route include Southwest Airlines, a budget airline, as well as American Airlines. Additionally, both business and first-class services are offered on this route.
- Austin to Carlsbad (AUS-CLD): McClellan-Palomar Airport (CLD) lies about 28 miles from San Diego International Airport (SAN). For one-way economy tickets along this route, prices typically range from $95 to $385, subject to seasonal variations and booking timing. This route is primarily served by one-stop flights, with most connections occurring at Sky Harbor International Airport (PHX). The leading airline for this route is American Airlines, and first-class service is also available to passengers.
How to find the best prices for flights from Austin (AUS) to San Diego (SAN)
Getting some of the best deals on flights from Austin to San Diego is all about timing and flexibility. Here are some key tips to help you save:
- Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Afternoon departures from 12 p.m. to 6 p.m. often feature lower prices and are popular flight times, while flying on Monday typically offers cheaper rates, even though Friday remains the most favored travel day.
- Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
- Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find San Diego hotel and flight deals.
- Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
- Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
- Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.
*Members only. Savings vary and are not available on all bundles. Select hotels.
Arriving at San Diego International Airport from Austin-Bergstrom International Airport
San Diego welcomes travelers from Austin with a range of transport options based on price, convenience, and proximity. Here's how to reach San Diego efficiently:
- Hotel transfer: Transfers offer a convenient way to reach your hotel in San Diego, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
- Car rental: Renting a car from San Diego International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Diego International Airport on Expedia.
- Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
- Public transportation: From San Diego International Airport, Seaport, a seaport, is located about 0.1 miles away on foot, while Middletown Station, a metro station, is approximately 2.3 miles from the airport and typically reached by car. Additionally, B Street Cruise Ship Terminal, a cruise terminal, is around 3 miles away by car, providing convenient access to various transport options.
Austin to San Diego Flights
The cheapest times to fly from Austin to San Diego
On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to San Diego are during the month of December. You can find some of the cheapest flights from Austin to San Diego with Expedia's search tool and vast selection of airlines.
The best time to book a flight from Austin to San Diego
Sunday is one of the best days to book for cheap flights from Austin to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.
How to find cheap round-trip tickets from Austin to San Diego
Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to San Diego in 2026. You can also book with separate airlines for your outbound and return journeys, from $78 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.
Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.
You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.
*Terms apply.
Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.
Frequently Asked Questions
How much does a flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) cost?
You can find cheap one-way flights from $78 and cheap return flights $145 Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) with Expedia. One-way flights usually range from $140 to $910, and return flights typically cost between $250 and $1128. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) ticket fares go up or down.
*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The cheapest month to fly from AUS to SAN is December when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
There are 2 airlines offering direct flights from AUS to SAN:
- Frontier Airlines operates around 7 direct flights from AUS to SAN every week
- Hawaiian Airlines operates around 20 direct flights from AUS to SAN every week
How do I find cheap flights from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
To find a cheap flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best airline to fly with from Austin, TX (AUS) to San Diego, CA (SAN) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. WN offers the most daily flights from AUS to SAN, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
There are approximately 4 nonstop flights per day from Austin-Bergstrom Intl. (AUS) to San Diego Intl. (SAN). For more options, look at flights that include layovers.
What is the earliest flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from Austin-Bergstrom International Airport (AUS) to San Diego International Airport (SAN) usually departs at around 5:00 AM. This early departure allows you to arrive in San Diego with plenty of time to explore the city. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The most popular departure times for flights from Austin-Bergstrom International (AUS) to San Diego International (SAN) are in the early afternoon, from 12pm to 3pm. This time window accounts for about 27% of total traffic. Major airlines like American Airlines and United Airlines operate flights during this period. This timing works well for travelers looking to enjoy a leisurely morning before heading out.
How long does it take to fly from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Flying nonstop from AUS to SAN takes around 3 hours 20 minutes, with the route covering approximately 1,163 miles. Flights with a layover typically take 2 hours 40 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Business class seats are offered on the AUS to SAN route with American Airlines.
First class cabins are available on:
- United Airlines
- American Airlines
- Delta Air Lines
How much is a business class flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
A direct, return business class ticket from Austin, TX (AUS) to San Diego, CA (SAN) typically costs between $1,303 - $1,932. A non-stop, one-way business class flight is usually around $568 - $1,183. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) if you opt for a connecting flight.
*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) flight with Expedia?
It's easy to earn miles on a Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.
*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Diego from Austin-Bergstrom Intl. (AUS)?
From Austin-Bergstrom Intl. (AUS), you can fly into San Diego Intl. (SAN) to reach San Diego. Some flights may connect through major hubs like Love Field (DAL), El Paso Intl. (ELP), Denver Intl. (DEN) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) at the last minute?
Typically, booking a last minute flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package?
Securing a Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) San Diego Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.)?
If you booked your Austin, TX (AUS-Austin-Bergstrom Intl.) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.
Travel information
Origin airport | Austin-Bergstrom Intl. Airport |
|---|---|
Destination airport | San Diego Intl. Airport |
Distance | 1,162 miles away |
Airlines serving | Alaska Airlines, Frontier Airlines, American Airlines, Southwest Airlines, United, Delta, JetBlue Airways |
Popular airline | Alaska Airlines |
Roundtrip price | $145 |
Average flight time | 4 hours 31 mins |