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ALN to SQL: distance & flight time
Alton/St Louis (St Louis Regional Airport) → San Carlos (San Carlos Airport)
1,742 mi
2,804 km · 1,514 nm
3h 53m
estimated nonstop flight time
—
time difference · heading west
See live ALN→SQL fares Phone-only fares on this route — call free
Flight time details
1,742 miles nonstop takes roughly 3h 53m 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
- SQL — San Carlos Airport · San Carlos, 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 SQL
- SFO · San Francisco International Airport10 mi away
- PAO · Palo Alto Airport of Santa Clara County8 mi away
- HWD · Hayward Executive Airport12 mi away
- NUQ · Moffett Federal Airfield13 mi away
Frequently asked questions
How far is ALN from SQL?
The flight distance from Alton/St Louis (ALN) to San Carlos (SQL) is 1,742 miles (2,804 km, 1,514 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ALN to SQL?
A nonstop flight takes about 3h 53m 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 SQL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ALN–SQL that never appear on search engines, with no booking fees.