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Cheap flights from San Antonio to San Diego from $71

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 10/31. 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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Cheap round-trip flights

Frontier Logo
8:20 pm - 11:53 pmSAT-SAN
5h 33m1 stop
Frontier Logo
6:25 am - 1:23 pmSAN-SAT
4h 58m1 stop
$143Frontier
Find Deal
Mon, Sep 29 - Thu, Oct 2
Frontier Logo
9:33 pm - 11:48 amSAT-SAN
16h 15m1 stop
Frontier Logo
10:20 am - 7:15 pmSAN-SAT
6h 55m1 stop
$144Frontier
Find Deal
Thu, Oct 2 - Mon, Oct 6
United Airlines Logo
11:43 am - 4:39 pmSAT-SAN
6h 56m1 stop
United Airlines Logo
3:30 pm - 11:12 pmSAN-SAT
5h 42m1 stop
$151United Airlines
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Thu, Feb 19 - Sat, Feb 28
Frontier Logo
3:59 pm - 11:50 pmSAT-SAN
9h 51m1 stop
Frontier Logo
6:41 am - 3:14 pmSAN-SAT
6h 33m1 stop
$155Frontier
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
6:14 am - 11:30 amSAT-SAN
7h 16m1 stop
American Airlines Logo
1:28 pm - 8:42 pmSAN-SAT
5h 14m1 stop
$159American Airlines
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Tue, Feb 24 - Sat, Feb 28
Multiple Airlines Logo
9:47 pm - 7:29 amSAT-SAN
11h 42m1 stop
Multiple Airlines Logo
9:03 pm - 7:15 pmSAN-SAT
20h 12m1 stop
$163Multiple Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5
Multiple Airlines Logo
8:15 pm - 11:50 pmSAT-SAN
5h 35m1 stop
Multiple Airlines Logo
3:59 pm - 11:40 pmSAN-SAT
5h 41m1 stop
$164Multiple Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
Spirit Airlines Logo
9:47 pm - 7:29 amSAT-SAN
11h 42m1 stop
Spirit Airlines Logo
1:35 pm - 8:52 pmSAN-SAT
5h 17m1 stop
$173Spirit Airlines
Find Deal
Sat, Sep 27 - Tue, Sep 30
United Airlines Logo
5:59 pm - 9:56 pmSAT-SAN
5h 57m1 stop
United Airlines Logo
8:00 am - 3:31 pmSAN-SAT
5h 31m1 stop
$209United Airlines
Find Deal
Thu, Jan 15 - Tue, Jan 27
American Airlines Logo
6:05 pm - 10:20 pmSAT-SAN
6h 15m1 stop
American Airlines Logo
4:25 pm - 10:59 pmSAN-SAT
4h 34m1 stop
$274American Airlines
Find Deal
Sat, Nov 15 - Sun, Nov 23

Frontier flights from San Antonio to San Diego

Our best Frontier deals on San Antonio to San Diego flight tickets
Frontier
Sep 29
SAT8:20 pmSan Antonio
5h 33m
1 stop
SAN11:53 pmSan Diego
Oct 2
SAN6:25 amSan Diego
4h 58m
1 stop
SAT1:23 pmSan Antonio
$143
Find similar
Frontier
Oct 2
SAT9:33 pmSan Antonio
16h 15m
1 stop
SAN11:48 amSan Diego
Oct 6
SAN10:20 amSan Diego
6h 55m
1 stop
SAT7:15 pmSan Antonio
$144
Find similar
Frontier
Oct 15
SAT3:59 pmSan Antonio
9h 51m
1 stop
SAN11:50 pmSan Diego
Oct 22
SAN6:41 amSan Diego
6h 33m
1 stop
SAT3:14 pmSan Antonio
$155
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Spirit Airlines flights from San Antonio to San Diego

Our best Spirit Airlines deals on San Antonio to San Diego flight tickets
Spirit Airlines
Sep 27
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
Sep 30
SAN1:35 pmSan Diego
5h 17m
1 stop
SAT8:52 pmSan Antonio
$173
Find similar
Spirit Airlines
Sep 24
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
Sep 29
SAN6:15 amSan Diego
8h 32m
1 stop
SAT4:47 pmSan Antonio
$221
Find similar
Spirit Airlines
Sep 24
SAT9:47 pmSan Antonio
11h 42m
1 stop
SAN7:29 amSan Diego
Sep 29
SAN6:15 amSan Diego
8h 32m
1 stop
SAT4:47 pmSan Antonio
$288
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 September 17, 2025.
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

Mon 9/29

8:20 pm-11:53 pm

1 stop5h 33m

San Diego

Thu 10/2

6:25 am-1:23 pm

1 stop4h 58m

$143

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 10/2

9:33 pm-11:48 am

1 stop16h 15m

San Diego

Mon 10/6

10:20 am-7:15 pm

1 stop6h 55m

$144

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 2/19

11:43 am-4:39 pm

1 stop6h 56m

San Diego

Sat 2/28

3:30 pm-11:12 pm

1 stop5h 42m

$151

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 10/15

3:59 pm-11:50 pm

1 stop9h 51m

San Diego

Wed 10/22

6:41 am-3:14 pm

1 stop6h 33m

$155

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Tue 2/24

6:14 am-11:30 am

1 stop7h 16m

San Diego

Sat 2/28

1:28 pm-8:42 pm

1 stop5h 14m

$159

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Wed 10/1

9:47 pm-7:29 am

1 stop11h 42m

San Diego

Sun 10/5

9:03 pm-7:15 pm

1 stop20h 12m

$163

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Fri 10/31

8:15 pm-11:50 pm

1 stop5h 35m

San Diego

Mon 11/3

3:59 pm-11:40 pm

1 stop5h 41m

$164

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 9/27

9:47 pm-7:29 am

1 stop11h 42m

San Diego

Tue 9/30

1:35 pm-8:52 pm

1 stop5h 17m

$173

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Thu 1/15

5:59 pm-9:56 pm

1 stop5h 57m

San Diego

Tue 1/27

8:00 am-3:31 pm

1 stop5h 31m

$209

San AntonioSan Diego

SAT - SAN

SATSAN

San Antonio

Sat 11/15

6:05 pm-10:20 pm

1 stop6h 15m

San Diego

Sun 11/23

4:25 pm-10:59 pm

1 stop4h 34m

$274

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 $493. 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 $425. Flights in the morning are often more expensive with an average ticket price of $454.

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 $380 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 $307 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 September 2025, prices for San Antonio to San Diego flights are approximately 8% 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

$171

Fastest flight time

2h 50m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from San Antonio in the past 72 hours is $171. The best round-trip flight deal from San Antonio to San Diego found on momondo in the last 72 hours is $309.
The fastest flight from San Antonio to San Diego takes 2h 50m
Direct flights go from San Antonio to San Diego every day.
There is 1 airport near San Diego: 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 5h 24m.

  • 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 $96Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
FrontierPriceFrom $112Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $227Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
7,961 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
SouthwestPriceFrom $297Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

  • Southwest Flights From San Antonio to San Diego

    Southwest flies from San Antonio to San Diego around 10 times per week, with 4,242 momondo users rating the airline 8.0/10. The cheapest Southwest deal from San Antonio to San Diego in the last 72 hours was $297 (round-trip), much lower than the average airfare cost of $448 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
La Mesa
National City
Poway
Imperial Beach
San Ysidro
Borrego Springs
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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