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HLN to ALN: distance & flight time
Helena (Helena Regional Airport) → Alton/St Louis (St Louis Regional Airport)
1,229 mi
1,977 km · 1,068 nm
3h 8m
estimated nonstop flight time
—
time difference · heading east
See live HLN→ALN fares Phone-only fares on this route — call free
Flight time details
1,229 miles nonstop takes roughly 3h 8m 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 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 HLN from ALN?
The flight distance from Helena (HLN) to Alton/St Louis (ALN) is 1,229 miles (1,977 km, 1,068 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to ALN?
A nonstop flight takes about 3h 8m 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 HLN to ALN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–ALN that never appear on search engines, with no booking fees.