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UTH to HLN: distance & flight time
Udon Thani (Udon Thani Airport) → Helena (Helena Regional Airport)
7,514 mi
12,092 km · 6,529 nm
15h 12m
estimated nonstop flight time
-13h
time difference · heading northeast
See live UTH→HLN fares Phone-only fares on this route — call free
Flight time details
7,514 miles nonstop takes roughly 15h 12m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- 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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 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 UTH from HLN?
The flight distance from Udon Thani (UTH) to Helena (HLN) is 7,514 miles (12,092 km, 6,529 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to HLN?
A nonstop flight takes about 15h 12m 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 Udon Thani and Helena?
Helena is 13 hours behind Udon Thani.
What is the cheapest way to fly from UTH to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–HLN that never appear on search engines, with no booking fees.