Are direct flights from San Antonio to San Diego always the best option?

Direct flights offer convenience by reducing travel time and avoiding layovers. However, connecting flights can sometimes be more affordable, especially if you are willing to spend extra time in transit. Evaluate your priorities for cost versus convenience.

Can flexible travel dates help on San Antonio to San Diego flights?

Yes, being flexible with your travel dates can often lead to finding cheaper flights. Prices can vary significantly depending on the day of the week or season. Flying during off-peak times usually offers more budget-friendly options.

What extra costs should I check before booking San Antonio to San Diego flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes or making changes to your reservation. Being aware of these can help you budget accurately.

Flights From San Antonio

To San Diego

Cheap Flights from San Antonio to San Diego

Browse current best options from San Antonio. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

San Antonio

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

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from San Antonio to San Diego

Explore current cheapest deals departing from San Antonio to San Diego

2026-08-05 – 2026-08-08
SAT - San Diego
74% AI deal score
$333
$234
Round trip
2026-08-19 – 2026-08-22
SAT - San Diego
73% AI deal score
$316
$234
Round trip
2026-08-11 – 2026-08-22
SAT - San Diego
66% AI deal score
$270
$234
Round trip
2026-08-11 – 2026-08-21
SAT - San Diego
66% AI deal score
$274
$237
Round trip
2026-08-05 – 2026-08-09
SAT - San Diego
74% AI deal score
$332
$240
Round trip
2026-10-28 – 2026-10-30
SAT - San Diego
67% AI deal score
$286
$240
Round trip
2026-08-10 – 2026-08-13
SAT - San Diego
73% AI deal score
$324
$241
Round trip
2026-08-14 – 2026-08-18
SAT - San Diego
68% AI deal score
$316
$241
Round trip
2026-08-12 – 2026-08-14
SAT - San Diego
73% AI deal score
$321
$241
Round trip
2026-08-04 – 2026-08-08
SAT - San Diego
73% AI deal score
$338
$245
Round trip

San Antonio to San Diego: Overview

Insights for flights from San Antonio to San Diego

Flights from San Antonio to San Diego typically span a distance of 1814 km, classifying this as a medium-haul route. This means you can expect a journey that is longer than a short regional hop but generally shorter than intercontinental travel. Understanding this distance helps in planning your travel time and expectations for the overall trip.

For those seeking cheap flights from San Antonio to San Diego, fares typically range from $379 to $871, with a median price of $587. Right now, current fares are significantly above the typical level, indicating a less opportune time for booking. Only 1% of recent fares were classified as a good price, suggesting that finding a bargain on this route can be challenging.

When considering when is the cheapest time to fly from San Antonio to San Diego, December stands out with a median fare of $255. Following closely, January offers a median fare of $257, and May presents another affordable option with a median fare of $274. These months generally provide more budget-friendly opportunities for this route.

Regarding direct flights from San Antonio to San Diego, most itineraries connect at least once, as only 0% of recent fares were non-stop. This means you should anticipate at least one stopover on your journey. When connections are involved, the typical number of stopovers is 2, which can significantly impact the overall travel duration.

A typical journey from San Antonio to San Diego takes approximately 12h 1m, including connections. This duration accounts for the time spent in the air as well as any layovers you might encounter due to the prevalence of connecting itineraries on this route. New deals for this route appear almost daily, so setting up a price alert could be beneficial for tracking fare changes.

How much is a round trip from San Antonio to San Diego

Regular price: $203 - $367

Prices are currently within the regular range.

The regular price range for flights from San Antonio to San Diego is $203-$367. The current lowest deal is $217 with Frontier Airlines for travel from Oct 5-Oct 15.

now $217

Low $203

High $367

The cheapest time to fly from San Antonio to San Diego

The cheapest month to fly from San Antonio to San Diego is December, with a median price of $255. The most expensive month is July, with a median price of $663. Prices are generally lower from January to December.

December

Cheapest

Flights from $255

July

Most Expensive

Flights from $663

Jan

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Antonio to San Diego

Southwest Airlines

Last-minute flights going from San Antonio to San Diego

Sun, Jul 26

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$778

$400

One-way

Sun, Aug 2

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$441

$360

One-way

Mon, Aug 3

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$401

$304

One-way

Thu, Aug 6

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$373

$330

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$326

$293

One-way

Sat, Aug 8

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$277

$275

One-way

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

1 night

Jul 26 - Jul 27

$778 → $400

49%

3 nights

Aug 3 - Aug 6

$401 → $304

24%

4 nights

Nov 12 - Nov 16

$342 → $247

28%

5 nights

Nov 11 - Nov 16

$340 → $247

27%

Popular Airports to fly from San Antonio to San Diego

San Antonio - San Diego route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from San Antonio to San Diego are above the typical level at $587.

📅 Best time to fly

Fly in December for the best prices

Historically, December is the cheapest month to fly, with a median price of $255.

⏱️ Flight duration

Flights are typically 12h 1m with 2 stopovers

The typical flight duration from San Antonio to San Diego is 12h 1m, with 2 stopovers.

✈️ Airlines & availability

No direct flights available

There are no direct flights available from San Antonio to San Diego. All flights include stopovers.

🏆 Airline highlight

Frontier Airlines offers a recent deal for $217

Frontier Airlines had a recent deal for $217 from San Antonio to San Diego.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from San Antonio to San Diego are frequent, appearing every 30 days.

San Antonio main airports to depart from

San Antonio International (SAT)

Cheapest

San Antonio International Airport is a great option for flights from San Antonio to San Diego.

📍 ~15 km from San Antonio city center (reachable by car)

💸 Flights from ~$212

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

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

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

💸 Flights from ~$211

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is a convenient alternative for Mexico-bound travelers via the Cross Border Xpress (CBX) terminal.

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

💸 Flights from ~$254

Business & First Class Flight Deals to San Diego

80% AI deal score

$1,522

$879

Save $643

Frequently Asked Questions About Flights to San Diego

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can often reveal better deals. Setting up price alerts may also help you catch drops in fares.

Booking in advance, often several weeks or months before your intended travel date, can sometimes result in lower prices. However, last-minute deals can occasionally appear. Monitoring price trends may help you decide the optimal booking time.

Comparing nearby airports at both your origin and destination can sometimes uncover more economical flight options. While it may add to travel time, the savings on airfare can be significant. Always factor in ground transportation costs and convenience.

Related routes

More routes from San Antonio

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Flights to San Diego from other cities

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San Antonio to San Diego: Overview

Insights for flights from San Antonio to San Diego

How much is a round trip from San Antonio to San Diego

Regular price: $203 - $367

Prices are currently within the regular range.

The regular price range for flights from San Antonio to San Diego is $203-$367. The current lowest deal is $217 with Frontier Airlines for travel from Oct 5-Oct 15.

now $217

Low $203

High $367

The cheapest time to fly from San Antonio to San Diego

December

Cheapest

Flights from $255

July

Most Expensive

Flights from $663

Jan

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Antonio to San Diego

Southwest Airlines

Last-minute flights going from San Antonio to San Diego

Sun, Jul 26

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$778

$400

One-way

Sun, Aug 2

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$441

$360

One-way

Mon, Aug 3

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$401

$304

One-way

Thu, Aug 6

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$373

$330

One-way

Fri, Aug 7

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$326

$293

One-way

Sat, Aug 8

⌛ Last-Minute

SAT - San Diego

San Antonio (SAT) - San Diego (SAN)

Frontier Airlines

$277

$275

One-way

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

1 night

Jul 26 - Jul 27

$778 → $400

49%

3 nights

Aug 3 - Aug 6

$401 → $304

24%

4 nights

Nov 12 - Nov 16

$342 → $247

28%

5 nights

Nov 11 - Nov 16

$340 → $247

27%

Popular Airports to fly from San Antonio to San Diego