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SQL to ALN: distance & flight time
San Carlos (San Carlos Airport) → Alton/St Louis (St Louis Regional Airport)
1,742 mi
2,804 km · 1,514 nm
3h 53m
estimated nonstop flight time
—
time difference · heading east
See live SQL→ALN fares Phone-only fares on this route — call free
Flight time details
1,742 miles nonstop takes roughly 3h 53m gate to gate, flying east. 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
- SQL — San Carlos Airport · San Carlos, United States
- ALN — St Louis Regional Airport · Alton/St Louis, 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 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
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
Frequently asked questions
How far is SQL from ALN?
The flight distance from San Carlos (SQL) to Alton/St Louis (ALN) 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 SQL to ALN?
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.
Are there nonstop flights from SQL to ALN?
Nonstop service on SQL–ALN depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 3h 53m nonstop estimate.
What is the cheapest way to fly from SQL to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SQL–ALN that never appear on search engines, with no booking fees.
Why are some SQL to ALN fares phone-only?
Consolidator contracts let us sell certain SQL–ALN tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.