San Antonio to San Diego flights

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Fare seen

€170Seen on 22 Sep 2026

Last checked

13 Oct 2026

Observed fares. Prices may change.

Your next trip, last seen at €91

Lowest observed

16 Nov 2026

Frontier Airlines · 1 stop · One way

Cheapest observed day · Last checked: 22 Sep 2026

Departure

20:20

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Airlines seen: Frontier Airlines, United Airlines
Typical journey time: 7h 11m
Non-stop: Yes

Short answer

We have seen Frontier Airlines fares from San Antonio to San Diego. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €170 on 22 Sep 2026.

About this route

Explore the fares we observed from San Antonio to San Diego. Prices move often, so pick your dates to see the latest options.

Route distance: 1,812 km
Typical journey time: 7h 11m
Airlines seen: Frontier Airlines, United Airlines
Alternative airports: CLD

Route-level information; individual journeys vary.
Published schedules report non-stop service with Southwest Airlines. Check current timetables.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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How our prices work

Airport to city: straight-line distance

San Antonio International Airport (SAT) → San Antonio, city gazetteer reference point (29.4241, -98.4936): ≈ 12 km.
San Diego International Airport (SAN) → San Diego, city gazetteer reference point (32.7153, -117.1573): ≈ 4 km.
McClellan-Palomar Airport (CLD) → San Diego, city gazetteer reference point (32.7153, -117.1573): ≈ 47 km.

Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.

Frequently asked

How much was a flight from San Antonio to San Diego?

A fare of €170 was seen on 22 Sep 2026. Fares change, so search your dates for the current price.

Are there direct flights from San Antonio to San Diego?

Yes. We have seen non-stop flights on this route, flown by Southwest Airlines.

Which airlines fly from San Antonio to San Diego?

These are the carriers we have seen on the route: Frontier Airlines, United Airlines.

How long does the flight from San Antonio to San Diego take?

The average journey time across the 82 fares we observed is 9h 28m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide