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CSM to HLN: distance & flight time
Clinton (Clinton Sherman Airport) → Helena (Helena Regional Airport)
1,022 mi
1,645 km · 888 nm
2h 41m
estimated nonstop flight time
-1h
time difference · heading northwest
See live CSM→HLN fares Phone-only fares on this route — call free
Flight time details
1,022 miles nonstop takes roughly 2h 41m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- CSM — Clinton Sherman Airport · Clinton, United States
- HLN — Helena Regional Airport · Helena, 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 CSM
- HBR · Hobart Regional Airport26 mi away
- LTS · Altus Air Force Base47 mi away
- FSI · Henry Post Army Air Field (Fort Sill)66 mi away
- LAW · Lawton Fort Sill Regional Airport69 mi away
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
Frequently asked questions
How far is CSM from HLN?
The flight distance from Clinton (CSM) to Helena (HLN) is 1,022 miles (1,645 km, 888 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CSM to HLN?
A nonstop flight takes about 2h 41m 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 CSM to HLN?
Nonstop service on CSM–HLN 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 2h 41m nonstop estimate.
What is the time difference between Clinton and Helena?
Helena is 1 hour behind Clinton.
What is the cheapest way to fly from CSM to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CSM–HLN that never appear on search engines, with no booking fees.
Why are some CSM to HLN fares phone-only?
Consolidator contracts let us sell certain CSM–HLN 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.