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ALN to SAN: distance & flight time
Alton/St Louis (St Louis Regional Airport) → San Diego (San Diego International Airport)
1,573 mi
2,531 km · 1,367 nm
3h 33m
estimated nonstop flight time
—
time difference · heading west
See live ALN→SAN fares Phone-only fares on this route — call free
Flight time details
1,573 miles nonstop takes roughly 3h 33m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ALN — St Louis Regional Airport · Alton/St Louis, United States
- SAN — San Diego International Airport · San Diego, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ALN
- STL · St Louis Lambert International Airport20 mi away
- BLV · Scott AFB/Midamerica Airport26 mi away
- SUS · Spirit of St Louis Airport36 mi away
- SPI · Abraham Lincoln Capital Airport69 mi away
Near SAN
Frequently asked questions
How far is ALN from SAN?
The flight distance from Alton/St Louis (ALN) to San Diego (SAN) is 1,573 miles (2,531 km, 1,367 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALN to SAN?
A nonstop flight takes about 3h 33m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the cheapest way to fly from ALN to SAN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALN–SAN that never appear on search engines, with no booking fees.