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Cheap Flights from San Antonio (SAT) to San Diego (SANA)

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Flight deals from San Antonio International to San Diego

Looking for a cheap last-minute deal or the best return flight from San Antonio International Airport to San Diego? If you want to travel next month, return fares start from $324. Find the lowest prices on one-way and return tickets right here.
San Diego.$322 per passenger.Departing Wed, 26 Aug, returning Tue, 1 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 26 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 1 Sep, arriving in San Antonio International.Price includes taxes and charges.From $322, select.
San Diego.$322 per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 29 Jul, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 5 Aug, arriving in San Antonio International.Price includes taxes and charges.From $322, select.
San Diego.$323 per passenger.Departing Wed, 5 Aug, returning Wed, 12 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 5 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 12 Aug, arriving in San Antonio International.Price includes taxes and charges.From $323, select.
San Diego.$323 per passenger.Departing Tue, 23 Jun, returning Wed, 1 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 23 Jun, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 1 Jul, arriving in San Antonio International.Price includes taxes and charges.From $323, select.
San Diego.$324 per passenger.Departing Wed, 8 Jul, returning Tue, 14 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 8 Jul, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 14 Jul, arriving in San Antonio International.Price includes taxes and charges.From $324, select.
San Diego.$351 per passenger.Departing Wed, 2 Sep, returning Fri, 4 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 2 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Fri, 4 Sep, arriving in San Antonio International.Price includes taxes and charges.From $351, select.
San Diego.$365 per passenger.Departing Thu, 15 Oct, returning Mon, 19 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Thu, 15 Oct, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 19 Oct, arriving in San Antonio International.Price includes taxes and charges.From $365, select.
San Diego.$372 per passenger.Departing Fri, 26 Jun, returning Sat, 27 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from San Antonio International on Fri, 26 Jun, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Sat, 27 Jun, arriving in San Antonio International.Price includes taxes and charges.From $372, select.
San Diego.$461 per passenger.Departing Wed, 23 Sep, returning Mon, 28 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Wed, 23 Sep, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Mon, 28 Sep, arriving in San Antonio International.Price includes taxes and charges.From $461, select.
San Diego.$462 per passenger.Departing Mon, 24 Aug, returning Wed, 26 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Mon, 24 Aug, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Wed, 26 Aug, arriving in San Antonio International.Price includes taxes and charges.From $462, select.
San Diego.$528 per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Wed, 29 Jul, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Wed, 5 Aug, arriving in San Antonio International.Price includes taxes and charges.From $528, select.
San Diego.$529 per passenger.Departing Wed, 1 Jul, returning Sat, 4 Jul.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Wed, 1 Jul, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Sat, 4 Jul, arriving in San Antonio International.Price includes taxes and charges.From $529, select.
San Diego.$537 per passenger.Departing Wed, 26 Aug, returning Tue, 1 Sep.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Wed, 26 Aug, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Tue, 1 Sep, arriving in San Antonio International.Price includes taxes and charges.From $537, select.
San Diego.$572 per passenger.Departing Thu, 1 Oct, returning Thu, 15 Oct.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from San Antonio International on Thu, 1 Oct, arriving in San Diego International.Inbound direct flight with Southwest Airlines departs from San Diego International on Thu, 15 Oct, arriving in San Antonio International.Price includes taxes and charges.From $572, select.
San Diego.$584 per passenger.Departing Sat, 21 Nov, returning Tue, 24 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Sat, 21 Nov, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Tue, 24 Nov, arriving in San Antonio International.Price includes taxes and charges.From $584, select.
San Diego.$647 per passenger.Departing Fri, 30 Oct, returning Thu, 12 Nov.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from San Antonio International on Fri, 30 Oct, arriving in San Diego International.Inbound indirect flight with Southwest Airlines, departs from San Diego International on Thu, 12 Nov, arriving in San Antonio International.Price includes taxes and charges.From $647, select.

Find the cheapest month to fly from San Antonio International to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Antonio International to San Diego flights are currently cheapest in August.
Jun
from $372
Jul
from $324
Aug
from $323
Sep
from $351
Oct
from $365
Nov
from $584
Dec
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Jan
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Feb
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Mar
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Apr
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May
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Direct flights from San Antonio International to San Diego

Alternative San Antonio International to San Diego routes

Looking for the cheapest, fastest or easiest route from San Antonio International to San Diego? You could fly into the following airports instead.

San Diego International

4km from central San Diego
ClosestCheapest
from $322
Search flights

McClellan-Palomar

48km from central San Diego
from $430
Search flights

San Antonio to San Diego: Flight information

The things to know before you go.
Cheapest flight found$322
Cheapest month to flyJuly
Average flight time2 hrs, 53 mins
Most popular airlineSouthwest Airlines
Average flights per week15

Finding cheap flights from San Antonio International to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from San Antonio International to San Diego is $322. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 53 minutes is the average flight time from San Antonio International to San Diego.
Southwest Airlines flies direct from San Antonio International to San Diego.
As of June 2026, there are 15 flights per week flying from San Antonio International to San Diego.
The cheapest month to fly from San Antonio International to San Diego is usually July.
If you're flying from San Antonio International Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $322.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Antonio International Airport to San Diego on Wednesday, 29 July 2026.
Yes – the average flight time is 2 hours and 53 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 19°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to San Diego.

Travelling from San Antonio International Airport (SAT) to San Diego: what you need to know

  • The average time for a direct flight from San Antonio International Airport to San Diego is 2 hours 45 minutes.

  • San Diego is two hours behind San Antonio, where San Antonio International Airport is located. San Diego observes the UTC-8 timezone.

  • The busiest route is from San Antonio International Airport (SAT) to San Diego International Airport (SAN). There are eight services every week between these two airports. Southwest Airlines offers a 06:10 departure between SAT and SAN.

  • To avoid missing your SAT to San Diego flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and one hour before domestic flights is the standard rule.

  • You'll likely experience longer queues in popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.

  • Direct San Antonio International Airport to San Diego tickets are available for booking. San Diego International Airport (SAN) is where you'll complete your journey.

  • Southwest Airlines is a leading airline that offers direct flights from San Antonio International Airport to San Diego.

  • Located around 13 kilometres from central San Antonio, SAT can be reached in about 20 minutes by car, depending on traffic. The journey on public transport takes roughly 50 minutes.

  • Want a hassle-free start to your travels? Stay near SAT. Whether you're catching an early flight from San Antonio International Airport to San Diego or want to avoid feeling rushed, these hotels are worth a look:

  • San Antonio International Airport earns top marks for on-time performance. 82% of flights that depart SAT arrive at their destination on time.

  • SAT is located at 9800 Airport Boulevard.

How to find the cheapest flights from San Antonio International Airport (SAT) to San Diego

  • The best price we've seen for a one-way San Antonio International Airport to San Diego flight is $156. The cheapest price for a return flight is $322. Bear in mind fares can change due to availability at the time of booking.

  • To pick up cheap flights from SAT to San Diego, book as early as possible. Airlines usually offer their most competitively priced fares when tickets first go on sale.

  • Finding cheap tickets from San Antonio International Airport to San Diego is easier if you're flexible with your trip dates. Use the 'Whole month' search tool to access the lowest fares across each month and land a fantastic deal.

  • Save time looking for cheap flights from SAT to San Diego by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.

  • Select your ideal arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from San Antonio International Airport to San Diego by 'Best,' 'Cheapest' or 'Fastest.'

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) to central San Diego takes about 15 minutes by car. The centre is roughly 5 kilometres away.

  • Getting there by public transport takes around 25 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from San Antonio International Airport to San Diego. Stay at one of these accommodation options near SAN instead:

  • Lock in the lowest price by booking your ride from San Diego International Airport around two weeks in advance of your flight from SAT to San Diego.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • If you're staying in central San Diego (or just want to see the sights straight away), the city is around 48 kilometres from McClellan-Palomar Airport (CLD). Look for any information desks to point you in the right direction after disembarking your flight from San Antonio International Airport to San Diego.

  • Following your SAT to San Diego flight, tuck yourself in at a hotel near CLD. These are some great options that'll help you slip into relaxation mode:

  • Avoid filling out forms on the spot and save time at the rental desk by completing your booking beforehand. Reserve your ride from CLD ahead of time so you can just grab the keys and be on your way.

Best time to go to San Diego

  • July is the busiest month for flights from San Antonio International Airport to San Diego. To skip the crowds, visit San Diego in December.

  • When booking your San Antonio International Airport to San Diego plane ticket, think about what kind of weather you prefer. August is the warmest month in San Diego, with temperatures ranging from 16ºC (61ºF) to 27ºC (81ºF).

  • February sees average temperatures of between 8ºC (46ºF) and 22ºC (72ºF). Look for a cheap ticket from SAT to San Diego around that time if you want to travel when it's cooler.

More about San Diego

  • Start your San Diego trip right by choosing the ideal place to stay. After booking your flight from San Antonio International Airport to San Diego, check out our range of hotels including:

  • There are so many things to do and see in this city it can be tricky to know where to begin. San Diego Balboa Park, San Diego Zoo and USS Midway Museum are popular attractions which should be on every San Diego itinerary.

Explore more of the United States

  • San Diego has its own special appeal, but there are so many other corners of the United States waiting to be discovered. About 177 kilometres northwest of San Diego, a trip to Los Angeles will keep you busy. Check out popular attractions like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • If there's time to check out another major destination in the United States, head for Phoenix, about 483 kilometres east of San Diego. Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum are among the biggest draws.

Plan the rest of your trip from San Antonio to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.