To San Diego

Cheap Flights from Austin to San Diego

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RatePunk searches hundreds of travel sites at once for deals on flights to San Diego

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Austin to San Diego

Explore current cheapest deals departing from Austin to San Diego

Round trip

Sort by: Cheapest

August 20 - August 22

Cheapest

Best

AUS - San Diego

$388

$183

Round trip

August 19 - August 24

AUS - San Diego

$382

$188

Round trip

September 15 - September 23

AUS - San Diego

$305

$188

Round trip

September 15 - September 30

AUS - San Diego

$284

$188

Round trip

September 15 - September 16

AUS - San Diego

$326

$188

Round trip

September 15 - September 29

AUS - San Diego

$288

$188

Round trip

August 18 - September 9

Earliest

AUS - San Diego

$326

$188

Round trip

August 25 - September 9

AUS - San Diego

$334

$188

Round trip

August 18 - September 16

Earliest

AUS - San Diego

$323

$188

Round trip

September 1 - September 5

AUS - San Diego

$203

$192

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Austin to San Diego

A typical journey from Austin to San Diego takes about 11h 39m, including connections. This is a medium-haul route, covering a distance of 1870 kilometers. Given that most itineraries connect at least once, this duration reflects the time spent on layovers in addition to flight segments.

For travelers seeking cheap flights from Austin to San Diego, prices typically range from $241–$693, with a median of $433. Right now, fares are significantly below the typical level for this route. Currently, about 8% of recent fares are considered a good price, indicating that finding a particularly low fare can require some flexibility.

When is the cheapest time to fly from Austin to San Diego? The data indicates that December is often the most affordable month, with a median fare of $197. Following closely are April, with a median of $198, and March, where the median fare is $204. These months present the best opportunities for finding lower prices.

Regarding direct flights from Austin to San Diego, only 36.8% of recent fares are non-stop. This means that most itineraries connect at least once, with a typical connecting journey involving 2 stopovers. New deals appear almost daily for this route, so setting up a price alert can be beneficial for tracking fare changes.

How much is a round trip from Austin to San Diego

Regular price: $289 - $417

Prices are currently below the regular range.

The regular price range for flights from Austin to San Diego is typically between $289 and $417. The current lowest deal is $183 with Frontier Airlines, for travel from Aug 20-Aug 22.

now $183

Low $289

High $417

The cheapest time to fly from Austin to San Diego

The cheapest month to fly from Austin to San Diego is December, with a median price of $197. The most expensive month is June, with a median price of $636. Prices are generally lower from March to December.

December

Cheapest

Flights from $197

June

Most Expensive

Flights from $636

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Austin to San Diego

Alaska Airlines, Inc.

Last-minute flights going from Austin to San Diego

Tue, Jul 7

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

Southwest Airlines

$273

$207

One-way

Tue, Jul 7

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

United Airlines

$237

$217

One-way

Tue, Jul 7

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

American Airlines

$260

$217

One-way

Wed, Jul 8

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

United Airlines

$237

$217

One-way

Wed, Jul 8

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

American Airlines

$260

$217

One-way

Tue, Jul 14

⌛ Last-Minute

AUS - San Diego

Austin (AUS) - San Diego (SAN)

United Airlines

$233

$217

One-way

Biggest price drops on these dates for flights from Austin to San Diego

2 nights

Aug 20 - Aug 22

$388 → $183

53%

5 nights

Aug 19 - Aug 24

$382 → $188

51%

5 nights

Oct 14 - Oct 19

$410 → $224

45%

4 nights

Oct 14 - Oct 18

$413 → $231

44%

Popular Airports to fly from Austin to San Diego

Austin - San Diego route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Austin to San Diego are below the typical level, with prices around $183.

📅 Best time to fly

Cheapest months: December, April, March

Historically, the cheapest months to fly are December ($197), April ($198), and March ($204).

⏱️ Flight duration

Median flight time is 11h 39m

The median flight time for this route is 11 hours and 39 minutes.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant for this route, with a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines offers direct flights

Alaska Airlines, Inc. is an airline that offers direct flights on this route.

🎯 Booking tip

Deals are frequent

Deals for flights from Austin to San Diego are frequent, with over 1 deal per day.

Austin main airports to depart from

Austin–Bergstrom International (AUS)

Cheapest

Austin–Bergstrom International Airport is a great choice for flights from Austin to San Diego.

📍 ~10 km from city center (reachable by car)

💸 Flights from ~$183

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

San Diego International Airport is a convenient arrival option for flights from Austin to San Diego.

📍 ~5 km from San Diego city center (reachable by car)

💸 Flights from ~$183

McClellan–Palomar (CLD)

McClellan–Palomar Airport offers an alternative arrival point for flights from Austin to San Diego.

📍 ~40 km from San Diego city center (reachable by car)

💸 Flights from ~$320

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Consider Tijuana International for direct access to Mexico flights via the Cross Border Xpress terminal.

📍 ~25 km from San Diego (reachable by car)

💸 Flights from ~$328

John Wayne (SNA)

John Wayne offers a strong domestic network as a major US alternative, often less congested than LAX.

📍 ~120 km from San Diego (reachable by car)

💸 Flights from ~$230

Los Angeles International (LAX)

Cheapest

Los Angeles International is a primary global hub with extensive international and domestic route options.

📍 ~180 km from San Diego (reachable by car)

💸 Flights from ~$182

Ontario International (ONT)

Ontario International is a reliable domestic alternative with growing service, often less congested than LAX or SNA.

📍 ~185 km from San Diego (reachable by car)

💸 Flights from ~$188

Long Beach (LGB)

Long Beach is easy to navigate with fast security, a good alternative for specific West Coast routes.

📍 ~150 km from San Diego (reachable by car)

💸 Flights from ~$299

Business & First Class Flight Deals to San Diego

45% AI deal score

$1,205

From AUS

Elite

Jun 20

San Diego, United States

45% AI deal score

$1,205

Frequently Asked Questions About Flights to San Diego

Historically, the optimal time to purchase tickets from Austin to San Diego is 60+ days before departure. Flights booked within this window typically average around $329. In contrast, booking 0-6 days before departure sees average prices rise significantly to $792. For those booking 7-13 days out, the average price is $832, while 14-27 days out shows an average of $703. Across the trailing quarter, prices tend to increase closer to the departure date.

A good price for a flight from Austin to San Diego is considered to be $241 or less. This threshold represents the lowest 25% of fares observed across the trailing quarter. The median price for this route over the same period was $433, with 75% of fares being $693 or less. Travelers aiming for a budget-friendly trip should target prices at or below the $241 mark.

Historically, December is the cheapest month to fly from Austin to San Diego, with a median price of $197. April also offers low fares, with a median price of $198. March, while appearing as a cheapest month candidate with a median of $204, is also identified as the most expensive month, indicating significant price fluctuations within that period. The annual median price for this route is $433, suggesting that certain months offer substantial savings.

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