Cheap Flights from San Antonio International to San Diego International

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Flight deals from San Antonio International to San Diego International

Looking for a cheap last-minute deal or the best return flight from San Antonio International to San Diego International? Find the lowest prices on one-way and return tickets right here.

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

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 International flights are currently cheapest in September.

Direct flights from San Antonio International to San Diego International

San Antonio International to San Diego International: Alternative routes

Compare routes from San Antonio International to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

San Antonio to San Diego: Flight information

The things to know before you go.
Cheapest flight foundR 1,128
Cheapest month to flySeptember
Average flight time2 hrs, 58 mins
Most popular airlineSouthwest Airlines
Average flights per week12

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

The best price we found for a return flight from San Antonio International to San Diego International is R 2,779. 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 58 minutes is the average flight time from San Antonio International to San Diego International.
Southwest Airlines flies direct from San Antonio International to San Diego International.
As of August 2025, there are 12 flights per week flying from San Antonio International to San Diego International.
The cheapest month to fly from San Antonio International to San Diego International is usually September.
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 International Airport on Saturday, 6 September 2025.
Yes – the average flight time is 2 hours and 58 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 International 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.
Currently, Spirit Airlines and Southwest Airlines offer the cheapest flight tickets to San Diego International.

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

  • Book a direct flight from San Antonio International Airport to San Diego International Airport and you'll be travelling for an average of 2 hours 55 minutes.

  • The timezone in San Diego is UTC-7, which is two hours behind San Antonio.

  • Take your pick of ten weekly San Antonio International Airport to San Diego International Airport flights. The 06:20 departure with Southwest Airlines is the earliest flight you can take. Southwest Airlines operates the last service of the day at 20:35.

  • Leave plenty of time to catch your SAT to SAN flight. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as July, it's a good idea to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead for an international flight when you fly during a peak period in general.

  • Southwest Airlines is your ticket to exploring San Diego (and maybe even some other great corners of United States!). Check out the direct flights from San Antonio International Airport to San Diego International Airport offered by this popular carrier.

  • Most passengers choose to travel with Southwest Airlines on this route.

  • The most punctual carrier offering SAT to SAN flights is Southwest Airlines. Its services arrive as planned 73.83% of the time.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from San Antonio International Airport to San Diego International Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to tour your chosen city. Stopovers between SAT and SAN include:

    • Phoenix Sky Harbour International Airport

    • Harry Reid Airport (formerly McCarran Airport)

    • Los Angeles International Airport

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

  • R 1,128 is the best price for a one-way San Antonio International Airport to San Diego International Airport flight. A return flight starts at R 2,779. These fares may change based on availability.

  • Score cheap tickets from SAT to SAN by booking eight months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • July is the cheapest month for flights from San Antonio International Airport to San Diego International Airport. If you need to travel at a different time of year, the 'Whole month' tool will show you the lowest airfares across every month.

  • Landing cheap flights from SAT to SAN is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll let you know when there's a better deal.

  • Find the ideal flight for you by using the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from San Antonio International Airport to San Diego International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and journey duration.

Handy information about San Antonio International Airport (SAT)

  • You'll find SAT at 9800 Airport Boulevard.

  • 83.17% of flights departing from San Antonio International Airport touch down at their destination according to schedule. Given its strong on-time performance, delays are unlikely when flying out of SAT.

  • To reach San Antonio International Airport from central San Antonio, it takes about 20 minutes if you're travelling by car. Of course, this depends on traffic conditions. It's approximately 19 kilometres from the airport to the city centre.

  • Catching public transport? You can expect a journey time of around 1 hour 30 minutes.

  • Booked an early flight from San Antonio International Airport to San Diego International Airport? Avoid the hassle of rushing to the airport (and catch some extra z's) by choosing one of these stays close to SAT:

Arriving at San Diego International Airport (SAN)

Getting from San Diego International Airport (SAN) to central San Diego

  • The street address for SAN is Airport Drive.

  • San Diego International Airport is roughly 5 kilometres from the centre of San Diego. The drive time takes around 10 minutes.

  • When travelling by public transport, expect a journey time of around 20 minutes.

When to fly to San Diego International Airport (SAN)

  • The quietest month for a flight from San Antonio International Airport to San Diego International Airport is May, while July is the busiest. Choose the ideal time to visit San Diego based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • Before locking in your flight from San Antonio International Airport to San Diego International Airport, consider the kind of weather you like. August is the warmest month in San Diego, with temperatures ranging from 17ºC (63ºF) to 28ºC (82ºF).

  • February sees average temperatures of between 7ºC (45ºF) and 23ºC (73ºF). Search for cheap tickets from SAT to SAN sometime then if you'd rather travel in cooler conditions.

Explore more of United States

  • You've done San Diego, now it's time to explore more of United States. Journey about 177 kilometres north-west to Los Angeles to tick off its leading attractions. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, your itinerary will be busy.

  • Around 483 kilometres east of San Diego, Phoenix is another favourite stop in United States. Experience the best of this destination with a visit to Desert Botanical Garden, Heard Museum and Papago Park.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.