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KOP to HLN: distance & flight time
Nakhon Phanom (Nakhon Phanom Airport) → Helena (Helena Regional Airport)
7,462 mi
12,009 km · 6,485 nm
15h 6m
estimated nonstop flight time
-13h
time difference · heading northeast
See live KOP→HLN fares Phone-only fares on this route — call free
Flight time details
7,462 miles nonstop takes roughly 15h 6m 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
- KOP — Nakhon Phanom Airport · Nakhon Phanom, 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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 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 KOP from HLN?
The flight distance from Nakhon Phanom (KOP) to Helena (HLN) is 7,462 miles (12,009 km, 6,485 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOP to HLN?
A nonstop flight takes about 15h 6m 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 Nakhon Phanom and Helena?
Helena is 13 hours behind Nakhon Phanom.
What is the cheapest way to fly from KOP to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOP–HLN that never appear on search engines, with no booking fees.