Cheap flights from San Diego to Saint Louis
Cheapest current fares: $110 in September 2026, 2,501 km direct flight in ~2h 57m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Diego (SAN) to Saint Louis (STL). Refreshed daily.
San Diego (SAN) → Saint Louis (STL)
- September 2026 $110
Frequently asked questions
-
What is the cheapest month to fly from San Diego to Saint Louis?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from San Diego (SAN) to Saint Louis (STL), with fares starting from $110.
-
What is the lowest current fare from SAN to STL?
The lowest currently-listed fare from San Diego (SAN) to Saint Louis (STL) is $110 on 2026-09-09.
-
How long is the flight from San Diego to Saint Louis?
Direct flights from SAN to STL cover approximately 2,501 km (1,554 miles), with an estimated flight time of 2h 57m. Operating airlines: WN.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.