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Cheap Flights to San Diego

Perfect weather, laid-back vibes & surprisingly affordable flights

Flight Deals to San Diego

San Diego International (SAN) is a single-runway airport just minutes from downtown, served heavily by Southwest and Alaska alongside the major legacy carriers. While it lacks a dominant hub, strong leisure demand and Southwest's large presence keep fares reasonable, especially from the West Coast. Year-round mild weather means demand is steady, so the best deals come from flexibility and watching for Southwest and Alaska sales.

Best Time to Fly to San Diego

January through March and the September-October shoulder offer the lowest fares. Avoid summer, when beach season pushes prices to their annual peak.

Tips for Finding Cheap Flights to San Diego

Fly to San Diego From

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Frequently Asked Questions

When are flights to San Diego cheapest?

January through March is the cheapest window, with roundtrip fares from the West Coast dropping to $80-130 and transcon fares to $200-280. The fall shoulder season is also a bargain. Summer beach season, June through August, is the most expensive time to fly.

Which airlines fly cheapest to San Diego?

Southwest and Alaska have the largest presence at SAN and run frequent sales, making them the go-to for low fares. Delta, American, and United also serve the airport, and budget carriers occasionally add routes, so comparing across airlines pays off.

Is San Diego or Los Angeles cheaper to fly into?

Los Angeles usually has slightly cheaper fares due to its many competing airports and ultra-low-cost carriers. But San Diego's central airport saves time and ground-transport costs. If your trip is in the San Diego area, the small fare difference is often worth flying direct to SAN.

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