$72 Cheap Flights from San Antonio (SAT) to San Diego (SAN)

View $72 flight on Sun, Dec 14, 2025Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to San Diego Intl. Airport (SAN)

Cheap Flights from San Antonio to San Diego (SAT-SAN)

Prices were available within the past 7 days and start at $72 for one-way flights and $144 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
SAT
San Antonio
SAN
San Diego
$144 Roundtrip, found 5 hours ago
$144
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Dec 4 from San Antonio to San Diego, returning Thu, Dec 11, priced at $144 found 5 hours ago
Frontier Airlines
Fri, Nov 14 - Sun, Nov 16
SAT
San Antonio
SAN
San Diego
$154 Roundtrip, just found
$154
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Nov 14 from San Antonio to San Diego, returning Sun, Nov 16, priced at $154 just found
Frontier Airlines
Thu, Dec 4 - Thu, Dec 11
SAT
San Antonio
SAN
San Diego
$156 Roundtrip, found 5 hours ago
$156
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Dec 4 from San Antonio to San Diego, returning Thu, Dec 11, priced at $156 found 5 hours ago
Frontier Airlines
Mon, Nov 17 - Wed, Nov 19
SAT
San Antonio
SAN
San Diego
$160 Roundtrip, found 1 day ago
$160
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Nov 17 from San Antonio to San Diego, returning Wed, Nov 19, priced at $160 found 1 day ago
Frontier Airlines
Fri, Nov 14 - Mon, Nov 17
SAT
San Antonio
SAN
San Diego
$166 Roundtrip, just found
$166
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Nov 14 from San Antonio to San Diego, returning Mon, Nov 17, priced at $166 just found
Frontier Airlines
Tue, Oct 21 - Sat, Nov 1
SAT
San Antonio
SAN
San Diego
$168 Roundtrip, found 3 hours ago
$168
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Tue, Oct 21 from San Antonio to San Diego, returning Sat, Nov 1, priced at $168 found 3 hours ago
United
Thu, Dec 4 - Thu, Dec 11
SAT
San Antonio
SAN
San Diego
$185 Roundtrip, found 5 hours ago
$185
Roundtrip
found 5 hours ago
Select United flight, departing Thu, Dec 4 from San Antonio to San Diego, returning Thu, Dec 11, priced at $185 found 5 hours ago
American Airlines
Sun, Nov 16 - Tue, Nov 18
SAT
San Antonio
SAN
San Diego
$200 Roundtrip, found 8 hours ago
$200
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sun, Nov 16 from San Antonio to San Diego, returning Tue, Nov 18, priced at $200 found 8 hours ago
Southwest Airlines
Fri, Nov 14 - Sun, Nov 16
SAT
San Antonio
SAN
San Diego
$205 Roundtrip, just found
$205
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Nov 14 from San Antonio to San Diego, returning Sun, Nov 16, priced at $205 just found
Delta
Mon, Nov 17 - Mon, Nov 24
SAT
San Antonio
SAN
San Diego
$225 Roundtrip, found 4 hours ago
$225
Roundtrip
found 4 hours ago
Select Delta flight, departing Mon, Nov 17 from San Antonio to San Diego, returning Mon, Nov 24, priced at $225 found 4 hours ago

Find the cheapest month to fly from San Antonio (SAT) to San Diego (SAN)

February is typically the cheapest month to fly

From $88 - $387 per traveler.

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $382
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $382
Flights from San Antonio (SAT) to San Diego (SAN)
Origin airport
San Antonio Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$144
Distance
1127 mi
Average flight time
1 hour 13 mins

San Antonio to San Diego Flights

The cheapest times to fly from San Antonio 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 San Antonio to San Diego are during the month of December. You can find some of the cheapest flights from San Antonio to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to San Diego

Sunday is one of the best days to book for cheap flights from San Antonio 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 San Antonio 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 San Antonio to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $72 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 San Antonio 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 San Antonio 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 San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN) cost?
Get a cheap one-way flight from $72 or cheap return flight from $144 from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
The cheapest month to fly from SAT to SAN is December, when demand is low. Off-peak months are generally when you'll find lower airfares between these airports.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
Fly directly from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN) on a Southwest Airlines flight.
What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SAT to SAN. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
On average, just 1 direct flight departs each day from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN). Need other options? Use our filters to find flights with layovers and explore a new city along the way.
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
The 12 PM departures from SAT to SAN see the highest demand. These flights can come with a higher price due to their popularity. If you want to save on your trip, book during off-peak hours.
What day of the week has the most flights from SAT to SAN?
If you fly on a Friday, you'll get the biggest range of options for flights from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN).
What is the earliest flight from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
The earliest flight leaving from San Antonio Intl. Airport (SAT) is at around 7:10AM UTC-6. Hop on this flight and you'll reach San Diego Intl. Airport (SAN) at approximately 8:20AM UTC-8. The total flight duration is 3h 10m.
How long does it take to fly from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
Flights from SAT to SAN have an average travel time of 3 hours and 9 minutes. The distance between the two is 1,150 mi.
What airline has the least delays from SAT to SAN?
Frontier Airlines has the strongest track record for on-time direct flights from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN), with an on-time score of 100%. Use the Expedia App to view your journey status before you leave and get real-time alerts about any changes.
What is the best time to fly from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
To touch down at San Diego Intl. Airport (SAN) without delays, choose a flight that leaves San Antonio Intl. Airport (SAT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego from San Antonio Intl. Airport (SAT)?
Compare your flight options from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN). This is the only San Diego airport you can fly into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN) last-minute?
Waiting until just before your departure to book your flight from SAT to SAN generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Be flexible with your itinerary to boost your chances of scoring a bargain.
Is it cheaper to book a SAT to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a SAT to SAN flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the stress out of travel planning. Just pick your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN)?
In most instances, you can reschedule or cancel your SAT to SAN flight. However, there may be additional fees, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further information, visit our Customer Service portal.

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*Available to One Key members.