$68 Cheap Flights from San Antonio (SAT) to San Diego (SAN)

View $68 flight on Wed, Oct 15, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $68 for one-way flights and $127 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Jul 22 - Tue, Aug 5
SAT
San Antonio
SAN
San Diego
$127 Roundtrip, found 2 days ago
$127
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Tue, Jul 22 from San Antonio to San Diego, returning Tue, Aug 5, priced at $127 found 2 days ago
Spirit Airlines
Sat, Aug 2 - Sun, Aug 3
SAT
San Antonio
SAN
San Diego
$143 Roundtrip, found 13 hours ago
$143
Roundtrip
found 13 hours ago
Select Spirit Airlines flight, departing Sat, Aug 2 from San Antonio to San Diego, returning Sun, Aug 3, priced at $143 found 13 hours ago
Spirit Airlines
Tue, Jul 22 - Tue, Aug 5
SAT
San Antonio
SAN
San Diego
$150 Roundtrip, found 2 days ago
$150
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Tue, Jul 22 from San Antonio to San Diego, returning Tue, Aug 5, priced at $150 found 2 days ago
Spirit Airlines
Tue, Jul 29 - Fri, Aug 1
SAT
San Antonio
SAN
San Diego
$151 Roundtrip, found 2 days ago
$151
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Tue, Jul 29 from San Antonio to San Diego, returning Fri, Aug 1, priced at $151 found 2 days ago
Spirit Airlines
Tue, Jul 22 - Sun, Aug 3
SAT
San Antonio
SAN
San Diego
$153 Roundtrip, found 10 hours ago
$153
Roundtrip
found 10 hours ago
Select Spirit Airlines flight, departing Tue, Jul 22 from San Antonio to San Diego, returning Sun, Aug 3, priced at $153 found 10 hours ago
Spirit Airlines
Wed, Sep 10 - Tue, Sep 16
SAT
San Antonio
SAN
San Diego
$153 Roundtrip, found 16 hours ago
$153
Roundtrip
found 16 hours ago
Select Spirit Airlines flight, departing Wed, Sep 10 from San Antonio to San Diego, returning Tue, Sep 16, priced at $153 found 16 hours ago
Frontier Airlines
Thu, Jul 31 - Wed, Aug 13
SAT
San Antonio
SAN
San Diego
$155 Roundtrip, found 6 days ago
$155
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Jul 31 from San Antonio to San Diego, returning Wed, Aug 13, priced at $155 found 6 days ago
United
Wed, Sep 10 - Tue, Sep 16
SAT
San Antonio
SAN
San Diego
$185 Roundtrip, found 16 hours ago
$185
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Sep 10 from San Antonio to San Diego, returning Tue, Sep 16, priced at $185 found 16 hours ago
Southwest Airlines
Wed, Aug 6 - Mon, Aug 11
SAT
San Antonio
SAN
San Diego
$197 Roundtrip, found 2 hours ago
$197
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Wed, Aug 6 from San Antonio to San Diego, returning Mon, Aug 11, priced at $197 found 2 hours ago
American Airlines
Mon, Oct 27 - Fri, Oct 31
SAT
San Antonio
CLD
Carlsbad
$203 Roundtrip, found 1 day ago
$203
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Oct 27 from San Antonio to Carlsbad, returning Fri, Oct 31, priced at $203 found 1 day ago

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

September is typically the cheapest month to fly

From $88 - $265 per traveler.

Graph displaying average flight prices per month

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, Spirit Airlines, United
Roundtrip price
$127
Distance
1127 mi
Average flight time
1 hour 6 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 July. 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 $68 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?
Cheap return flights from San Antonio Intl. Airport (SAT) to San Diego Intl. Airport (SAN) start at $197. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Southwest Airlines flight leaving SAT on July 25 2025 and touching down at SAN. The price was last updated on July 1 2025 and has not changed since.
What is the cheapest month to fly from SAT to SAN?
Lock in a cheap ticket by booking your direct flight from SAT to SAN in December. You can find a one-way Southwest Airlines flight for $99 leaving on December 8 2025. This price is based on the cheapest direct flight found on Expedia for this route in the next 330 days. The price was last updated on July 1 2025 and remains unchanged.
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 SAT to SAN?
At the moment, the cheapest airline operating one-way flights from SAT to SAN is Southwest Airlines. You can jet off on this route from $99. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAT on September 24 2025. Prices were last updated on July 1 2025 and have not changed since.
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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