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$52+ Cheap flights from San Antonio to San Diego (SAT - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — SAN
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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Find cheap flights from San Antonio to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from San Antonio to San Diego are usually found in October or August, booked 65 days in advance, depart on a Wednesday or Thursday and return on a Saturday

Cheap flight deals from San Antonio to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 8, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$106
(Kiwi.com)

One-way from

$52
(Trip.com)

Popular in

November

Cheapest in

October

Average price

$388

Good round-trip deal

$437 or less

Good one-way deal

$195 or less
Provider with most accurate pricing for San Antonio-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Antonio-San Diego flights.
Search Deals
From San Antonio to San Diego
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One-way flight from San Antonio to San Diego
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from San Antonio to San Diego.
Search Deals
Price to beat on a one-way flight from San Antonio to San Diego.
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Find flight deals from San Antonio to San Diego

Cheapest flights from San Antonio to San Diego
Explore the most affordable flight options available from San Antonio to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:25 pmSAT - SAN
1 stop13h 40mFrontier
Sun 3/89:18 pmSAN - SAT
1 stop9h 48mFrontier
Deal found 1/7$106
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:36 pmSAT - SAN
1 stop30h 05mFrontier
Mon 3/26:25 amSAN - SAT
1 stop29h 20mFrontier
Deal found 1/7$107
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:24 pmSAT - SAN
1 stop29h 07mFrontier
Sun 2/86:30 amSAN - SAT
1 stop10h 59mFrontier
Deal found 1/7$110
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/512:31 pmSAT - SAN
1 stop23h 53mFrontier
Sun 2/86:30 amSAN - SAT
1 stop10h 59mFrontier
Deal found 1/7$118
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/238:24 pmSAT - SAN
1 stop29h 07mFrontier
Mon 2/26:30 amSAN - SAT
1 stop11h 03mFrontier
Deal found 1/6$121
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/58:25 pmSAT - SAN
1 stop13h 40mFrontier
Tue 3/178:25 amSAN - SAT
1 stop13h 52mFrontier
Deal found 1/7$122
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/268:24 pmSAT - SAN
1 stop29h 07mFrontier
Mon 2/96:30 amSAN - SAT
1 stop11h 03mFrontier
Deal found 1/6$127
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2912:31 pmSAT - SAN
1 stop6h 32mFrontier
Sun 2/18:16 pmSAN - SAT
1 stop21h 17mFrontier
Deal found 1/7$128
This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/238:24 pmSAT - SAN
1 stop29h 07mFrontier
Sun 1/256:30 amSAN - SAT
1 stop10h 59mFrontier
Deal found 1/6$133
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/910:05 amSAT - SAN
1 stop16h 04mFrontier
Tue 3/178:25 amSAN - SAT
1 stop13h 52mFrontier
Deal found 1/7$136
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:24 pmSAT - SAN
1 stop29h 07mFrontier
Thu 2/59:45 pmSAN - SAT
2 stops19h 48mFrontier
Deal found 1/7$139

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Antonio to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from San Antonio to San Diego that are best for you.

Fly from

San Antonio

Fly to

San Diego

Route

Depart

Return

Price

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/19

8:25 pm-12:08 am

1 stop5h 43m

San Diego

Thu 2/26

11:59 am-7:25 pm

1 stop5h 26m

$144

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Tue 3/24

6:45 am-9:14 pm

1 stop16h 29m

San Diego

Fri 3/27

6:25 am-9:06 am

1 stop24h 41m

$219

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 2/4

7:00 am-6:00 pm

2 stops13h 00m

San Diego

Mon 2/9

6:30 am-5:22 pm

1 stop8h 52m

$267

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Tue 2/3

7:00 am-6:00 pm

2 stops13h 00m

San Diego

Mon 2/9

6:15 am-1:48 pm

1 stop5h 33m

$267

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Mon 2/2

7:00 am-6:00 pm

2 stops13h 00m

San Diego

Wed 2/4

2:55 pm-11:43 pm

1 stop6h 48m

$267

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 2/4

7:00 am-6:00 pm

2 stops13h 00m

San Diego

Wed 2/4

10:30 pm-9:50 am

1 stop9h 20m

$267

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 2/4

7:00 am-6:00 pm

2 stops13h 00m

San Diego

Thu 2/5

9:55 am-5:25 pm

1 stop5h 30m

$267

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Mon 2/2

2:06 pm-6:36 pm

1 stop6h 30m

San Diego

Wed 2/4

12:11 pm-7:41 pm

1 stop5h 30m

$281

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 2/7

6:46 pm-11:09 pm

1 stop30h 23m

San Diego

Mon 2/9

8:42 pm-5:45 pm

1 stop19h 03m

$283

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 1/28

6:46 pm-11:09 pm

1 stop30h 23m

San Diego

Sat 1/31

6:15 am-5:45 pm

1 stop9h 30m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from San Antonio to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to San Diego in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Antonio-San Diego flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Antonio-San Diego flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Antonio-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Antonio-San Diego flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Antonio-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Antonio to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from San Antonio with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Antonio to San Diego

How far ahead should I book a flight from San Antonio to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to San Diego. Price data was last updated on January 2, 2026.

To ensure you get the cheapest price possible for a flight from San Antonio to San Diego, you should look to book at least 65 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Antonio to San Diego?

Currently, December is the cheapest month in which you can book a flight from San Antonio to San Diego (average of $70). Flying from San Antonio to San Diego in July is currently the most expensive (average of $132). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAT to SAN?

Find hourly flight availability from San Antonio to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 8, 2026.

One of the essential ways to save on airfare from San Antonio to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 6% on airfare.

The best insider tips for San Antonio to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to San Diego trip
Airports
SAT

For easy parking, consider the economy lots with shuttle service for better value on longer trips.

Read more about SATBy Ramsey Qubein
SAN

Use the free San Diego Flyer shuttle for convenient transport between SAN and Old Town Transit Center.

Read more about SANBy Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on SAT

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated January 8, 2026.
Read through reviews of airlines operating flights from San Antonio to San Diego, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,250 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
7.9
Good
8,032 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,097 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,289 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.7
Fair
3,060 reviews
Southwest
8.0
Very good
4,250 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Antonio to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this San Antonio to San Diego flight route?

    Within the past month, 10 users have taken a look at flights from San Antonio to San Diego.

  • How long is the flight from San Antonio to San Diego?

    A quick flight from San Antonio to San Diego can take about 5h 43m. Frontier provides one of the quickest options available for as low as $144. The distance between San Antonio and San Diego is about 1127 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from San Antonio to San Diego round-trip?

    Spirit Airlines, at $71, was found to be the cheapest airline from San Antonio to San Diego.Alternate airlines to your destination round-trip include Frontier and American Airlines. Spirit Airlines is priced at 81% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Antonio to San Diego one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $50. Users have also found prices from $78 and $109 on Frontier and American Airlines, respectively.

  • What are the cheapest flights from San Antonio to San Diego?

    Looking for the cheapest flight from San Antonio to San Diego? While on average our users pay $350, our data indicates the cheapest price to be $187. The most popular route (San Antonio - San Diego), is priced around $169.

  • Where are the most common layover locations when flying from San Antonio to San Diego?

    The most popular layover on flights from San Antonio to San Diego is Las Vegas.

  • What are some popular things to do or see while on a layover in Las Vegas?

    Most Las Vegas visitors opt to spend their time experiencing Fremont Street Experience, Fountains of Bellagio, and Stratosphere Tower. Fremont Street Experience, Fountains of Bellagio, and Stratosphere Tower are located about 5.9 mi, 2.3 mi, and 4.3 mi, respectively from Las Vegas Harry Reid Intl. Travelers in need of a car in Las Vegas can rent one for about $54 per day.

  • Where are the least popular layover locations for San Antonio to San Diego flights?

    Flights departing from San Antonio and landing in San Diego layover in Phoenix least frequently.

  • Can I find deals for flights from San Antonio to San Diego that include hotel bookings?

    Yes. In addition to deals on San Antonio to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Antonio to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to San Diego.

  • Can I find deals for business class flights from San Antonio to San Diego?

    Yes. Cheapflights offers flight deals from San Antonio to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Antonio to San Diego?

    Currently, December is the cheapest month in which you can book a flight from San Antonio to San Diego (average of $70). Flying from San Antonio to San Diego in July is currently the most expensive (average of $132). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for San Antonio to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from San Antonio to San Diego

Discover the top 7 airlines that operate flights from San Antonio to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$90Average$204FlexibilityNo cancel feeOn-time65%
FrontierCheapest$125Average$244FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$226Average$419FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$227Average$402FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$456FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$386FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$293Average$446FlexibilityNo cancel feeOn-time63%

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