Allegiant Air flights to San Diego

The best Allegiant Air flight deals to San Diego

Looking for a last-minute deal or the best direct flight? Find the biggest savings on one-way and round-trip flights to San Diego with Allegiant Air.

Find the cheapest time to fly to San Diego with Allegiant Air

Flexible on travel dates? Here's when plane tickets are cheapest.

Find which San Diego airports Allegiant Air flies to

We were able to find fares for the following San Diego airports. Find the one that works for you.

Flying to San Diego with Allegiant Air

The things to know before you go.
Cheapest flight found$48
Cheapest month to flyJune

Flying to San Diego with Allegiant Air: FAQs

The average Allegiant Air flight time from United States to San Diego is 5 hours and 27 minutes.
At the moment, Southwest Airlines, Alaska Airlines, American Airlines, SkyWest Airlines and United all fly to San Diego too.
Allegiant Air currently also flies to Orlando Sanford, St. Pete–Clearwater International and Las Vegas Harry Reid International.
Although it's difficult to get an accurate idea of when Allegiant Air flights to San Diego are cheapest, the lowest fares are currently for departures in June.
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