Cheap flights from Saint Louis to San Diego
Compare hundreds of airlines Saint Louis–San Diego
Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Saint Louis to San Diego, a about 2,512 km route (around 3h 38m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Southwest Airlines operate this route.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Saint Louis to San Diego?
Prices vary by season; use the price calendar to find the cheapest month.
How long is the flight from Saint Louis to San Diego?
A nonstop flight takes about 3h 38m and covers around 2,512 km. Connecting itineraries take longer.
Are there direct flights from Saint Louis to San Diego?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Saint Louis to San Diego?
Southwest Airlines operate this route, among others. Compare them all in the results.
When should I book Saint Louis–San Diego flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
Compare your dates in seconds
Saint Louis → San Diego · Live fares from 100+ sites — free, with no hidden fees.