Delta flights to San Diego from St. Louis

Landing cheap one-way Delta Air Lines flights from STL to SAN from S$192 on Expedia is simple — just filter by "Price (lowest to highest)." Or check out our affordable return fares S$655 for your next getaway.*

*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the most affordable months to fly to San Diego with Delta Air Lines. You could also find great deals on return and one-way fares in November.

Fill in your dates, hit search and check "Nonstop" on Expedia to browse any direct flights from STL to SAN with Delta Air Lines or another airline.

Delta Air Lines flights from Lambert-St. Louis Intl. Airport (STL) to San Diego land at San Diego Intl. Airport (SAN). This is the main gateway here.

Changes are usually free within 24 hours of booking, but your airline may add a charge after that. For more information about modifying your flights, go to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without additional charges, tick the "Changes included" and "No cancel fee" filters when organising your trip.