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HLN to ATY: distance & flight time
Helena (Helena Regional Airport) → Watertown (Watertown Regional Airport)
723 mi
1,164 km · 628 nm
2h 2m
estimated nonstop flight time
+1h
time difference · heading east
See live HLN→ATY fares Phone-only fares on this route — call free
Flight time details
723 miles nonstop takes roughly 2h 2m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- ATY — Watertown Regional Airport · Watertown, 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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 mi away
Frequently asked questions
How far is HLN from ATY?
The flight distance from Helena (HLN) to Watertown (ATY) is 723 miles (1,164 km, 628 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to ATY?
A nonstop flight takes about 2h 2m 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 time difference between Helena and Watertown?
Watertown is 1 hour ahead of Helena.
What is the cheapest way to fly from HLN to ATY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–ATY that never appear on search engines, with no booking fees.