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San Diego (SAN)St Louis (STL)
Direct flights from San Diego International Airport in United States to St. Louis Lambert International Airport in United States.
1 airline operates this route.≈ 2 flights/day · verified from live schedules, updated Jun 2026
Great-circle distance
2,501 km
Estimated flight time
3h 27m
Flight frequency
2 flights/day
Return route
Available
Flight frequency on SAN → STL
Live dataVerified from live airline schedules · last updated June 2026. Averaged over the most recent 7 days of operations.
Avg flights / day
2 flights
Flights / week
14
Verified operators
3
Last verified
June 2026
Also seen operating this route
Alaska AirlinesUnited Airlines
Airlines flying SAN → STL
All carriers known to operate direct flights on this route. Click any airline for its full network, hubs, and loyalty program.
Independent / unaligned1 carriers
Track a specific flight on this route
Enter the airline's flight number (e.g. LH123) on the tracker for live status, gates, terminals and aircraft type.
Other destinations from San Diego
San Diego to St Louis — frequently asked questions
How many flights per day are there from San Diego (SAN) to St Louis (STL)?
Based on the latest verified schedules, there are on average 2 flights per day from San Diego International Airport (SAN) to St. Louis Lambert International Airport (STL), as of June 2026.
Which airlines fly from San Diego (SAN) to St Louis (STL)?
Southwest Airlines, Alaska Airlines, United Airlines currently operate direct flights on this route.
How long is the flight from San Diego (SAN) to St Louis (STL)?
The estimated flight time is 3h 27m, covering a great-circle distance of 2,501 km between San Diego and St Louis.
Are there direct flights from San Diego (SAN) to St Louis (STL)?
Yes. 1 airline operates direct flights on the SAN–STL route, so a non-stop journey is available.
About this data. The base list of operating airlines is sourced from the OpenFlights public route database, augmented with manual overrides for carriers that have rebranded, merged, or ceased operations. Flight frequencies and currently-operating carriers are verified against live airline schedules (averaged over the last 7 days) and refreshed regularly. Distance is calculated as the great-circle distance between airport coordinates; estimated flight time assumes a typical cruise speed of 850 km/h with 30 minutes of taxi/climb buffer.