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SPF to ALN: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Alton/St Louis (St Louis Regional Airport)
806 mi
1,297 km · 700 nm
2h 13m
estimated nonstop flight time
—
time difference · heading southeast
See live SPF→ALN fares Phone-only fares on this route — call free
Flight time details
806 miles nonstop takes roughly 2h 13m gate to gate, flying southeast. 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
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, 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 SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 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 SPF from ALN?
The flight distance from Spearfish-South Dakota (SPF) to Alton/St Louis (ALN) is 806 miles (1,297 km, 700 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to ALN?
A nonstop flight takes about 2h 13m 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 SPF to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–ALN that never appear on search engines, with no booking fees.