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Cheap flights from San Antonio to San Diego from $51

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to San Diego departing on 2/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:56 pm - 8:24 am
SAT
-
SAN
14h 28m1 stop
Frontier Logo
11:30 am - 7:37 pm
SAN
-
SAT
6h 07m1 stop
$125Frontier
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
7:56 pm - 8:24 am
SAT
-
SAN
14h 28m1 stop
Frontier Logo
6:25 am - 7:37 pm
SAN
-
SAT
11h 12m1 stop
$127Frontier
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
6:30 am - 7:29 pm
SAN
-
SAT
10h 59m1 stop
$131Frontier
Thu, Feb 5 - Sun, Feb 8
Frontier Logo
8:24 pm - 12:08 am
SAT
-
SAN
29h 44m1 stop
Frontier Logo
6:30 am - 7:33 pm
SAN
-
SAT
11h 03m1 stop
$133Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
8:25 pm - 7:40 am
SAT
-
SAN
13h 15m1 stop
Frontier Logo
11:30 am - 7:37 pm
SAN
-
SAT
6h 07m1 stop
$138Frontier
Thu, Feb 19 - Mon, Feb 23
Frontier Logo
12:31 pm - 5:03 pm
SAT
-
SAN
6h 32m1 stop
Frontier Logo
6:30 am - 7:33 pm
SAN
-
SAT
11h 03m1 stop
$139Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
8:25 pm - 7:40 am
SAT
-
SAN
13h 15m1 stop
Frontier Logo
8:10 pm - 8:35 am
SAN
-
SAT
10h 25m1 stop
$153Frontier
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
5:36 pm - 9:41 pm
SAT
-
SAN
6h 05m1 stop
Frontier Logo
6:25 am - 7:01 pm
SAN
-
SAT
10h 36m1 stop
$155Frontier
Tue, Feb 24 - Sat, Feb 28
Frontier Logo
8:24 pm - 12:08 am
SAT
-
SAN
29h 44m1 stop
Frontier Logo
5:58 pm - 4:17 pm
SAN
-
SAT
20h 19m2 stops
$156Frontier
Thu, Feb 5 - Mon, Feb 9
Frontier Logo
7:56 pm - 12:47 pm
SAT
-
SAN
18h 51m2 stops
Frontier Logo
6:25 am - 7:37 pm
SAN
-
SAT
11h 12m1 stop
$160Frontier
Sat, Feb 21 - Mon, Feb 23

Frontier flights from San Antonio to San Diego

Our best Frontier deals on San Antonio to San Diego flight tickets
Frontier
Feb 21
SAT7:56 pmSan Antonio
14h 28m
1 stop
SAN8:24 amSan Diego
Feb 23
SAN11:30 amSan Diego
6h 07m
1 stop
SAT7:37 pmSan Antonio
$125
Find similar
Frontier
Feb 21
SAT7:56 pmSan Antonio
14h 28m
1 stop
SAN8:24 amSan Diego
Feb 23
SAN6:25 amSan Diego
11h 12m
1 stop
SAT7:37 pmSan Antonio
$127
Find similar
Frontier
Feb 5
SAT12:31 pmSan Antonio
6h 32m
1 stop
SAN5:03 pmSan Diego
Feb 8
SAN6:30 amSan Diego
10h 59m
1 stop
SAT7:29 pmSan Antonio
$131
Find similar

Delta flights from San Antonio to San Diego

Our best Delta deals on San Antonio to San Diego flight tickets
Delta
Jan 14
SAT5:20 amSan Antonio
9h 35m
1 stop
SAN12:55 pmSan Diego
Jan 21
SAN11:08 amSan Diego
9h 20m
1 stop
SAT10:28 pmSan Antonio
$379
Find similar
Delta
Jan 14
SAT4:40 pmSan Antonio
8h 07m
1 stop
SAN10:47 pmSan Diego
Jan 21
SAN6:30 amSan Diego
8h 52m
1 stop
SAT5:22 pmSan Antonio
$451
Find similar
Delta
Jan 7
SAT4:40 pmSan Antonio
8h 07m
1 stop
SAN10:47 pmSan Diego
Jan 16
SAN8:05 amSan Diego
10h 38m
1 stop
SAT8:43 pmSan Antonio
$460
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from San Antonio to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 2/21

7:56 pm-8:24 am

1 stop14h 28m

San Diego

Mon 2/23

11:30 am-7:37 pm

1 stop6h 07m

$125

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 2/21

7:56 pm-8:24 am

1 stop14h 28m

San Diego

Mon 2/23

6:25 am-7:37 pm

1 stop11h 12m

$127

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Sun 2/8

6:30 am-7:29 pm

1 stop10h 59m

$131

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

8:24 pm-12:08 am

1 stop29h 44m

San Diego

Mon 2/9

6:30 am-7:33 pm

1 stop11h 03m

$133

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/19

8:25 pm-7:40 am

1 stop13h 15m

San Diego

Mon 2/23

11:30 am-7:37 pm

1 stop6h 07m

$138

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

12:31 pm-5:03 pm

1 stop6h 32m

San Diego

Mon 2/9

6:30 am-7:33 pm

1 stop11h 03m

$139

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/19

8:25 pm-7:40 am

1 stop13h 15m

San Diego

Sun 2/22

8:10 pm-8:35 am

1 stop10h 25m

$153

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Tue 2/24

5:36 pm-9:41 pm

1 stop6h 05m

San Diego

Sat 2/28

6:25 am-7:01 pm

1 stop10h 36m

$155

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/5

8:24 pm-12:08 am

1 stop29h 44m

San Diego

Mon 2/9

5:58 pm-4:17 pm

2 stops20h 19m

$156

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 2/21

7:56 pm-12:47 pm

2 stops18h 51m

San Diego

Mon 2/23

6:25 am-7:37 pm

1 stop11h 12m

$160

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from San Antonio to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of October, then departing from San Antonio during the month August is also very affordable. Most momondo users find prices during this month for around $329.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from San Antonio to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $397. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $532. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the afternoon when flights can be purchased for as low as $423. Flights in the morning are often more expensive with an average ticket price of $451.

What is the cheapest San Antonio to San Diego flight route?

Fly from San Antonio to San Diego for the best San Antonio - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $388 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from San Antonio for as low as $297 on momondo.

What cabin class options are available on San Antonio to San Diego flights?

There is only 1 cabin class available to choose from on San Antonio to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Antonio to San Diego flight prices changed over time?

As of January 2026, prices for San Antonio to San Diego flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from San Antonio to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Antonio to San Diego (SAT to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to San Diego

Best Price Found

$226

Fastest flight time

2h 45m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in San Diego

1 airport
The best one-way flight to San Diego from San Antonio in the past 72 hours is $226. The best round-trip flight deal from San Antonio to San Diego found on momondo in the last 72 hours is $438.
The fastest flight from San Antonio to San Diego takes 2h 45m
Direct flights go from San Antonio to San Diego on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in San Diego. From San Antonio there are direct flights to San Diego (SAN).
Search flight deals

  • How far is San Antonio to San Diego by plane?

    The straight-line distance from San Antonio to San Diego is 1125.3 mi. By plane, this route typically takes 2h 45m.

  • When did momondo last update prices for flights from San Antonio Airport to San Diego Airport?

    Prices for flights from San Antonio Airport to San Diego Airport were last updated today.

  • How many operators does momondo search for flights from San Antonio Airport to San Diego Airport?

  • How old do you have to be to fly from San Antonio Airport to San Diego Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The required travel and health documents for your San Diego Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Diego Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from San Antonio to San Diego?

  • What is the most popular airline from San Antonio to San Diego?

Best airlines flying from San Antonio to San Diego

Compare and see reviews for airlines that fly from San Antonio to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $90Free CancellationRating
6.3
8,258 reviews
Search Spirit Airlines flights
FrontierPriceFrom $125Free CancellationRating
5.7
3,068 reviews
Search Frontier flights
American AirlinesPriceFrom $223Free CancellationRating
7.2
11,072 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $227Free CancellationRating
8.0
11,599 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,134 reviews
Search United Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,021 reviews
Search Delta flights
SouthwestPriceFrom $292Free CancellationRating
8.0
4,252 reviews
Search Southwest flights

  • Southwest Flights From San Antonio to San Diego

    Southwest flies from San Antonio to San Diego around 4 times per week, with 4,252 momondo users rating the airline 8.0/10. The cheapest Southwest deal from San Antonio to San Diego in the last 72 hours was $292 (round-trip), much lower than the average airfare cost of $447 for Southwest flights on this route.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
Poway
National City
Imperial Beach
Borrego Springs
San Ysidro
La Mesa
Lemon Grove
Alpine
Santee

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to San Diego?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from San Antonio.

Can I find flights from San Antonio to San Diego with flexible booking policies on momondo?

All flight searches from San Antonio to San Diego on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Antonio to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Antonio to San Diego.

I’m not ready to book a flight from San Antonio to San Diego right now. Can momondo alert me if prices change?

Price alerts on flights to San Diego from San Antonio are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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