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DSO to HLN: distance & flight time
Hamhung (Sondok Airport) → Helena (Helena Regional Airport)
5,437 mi
8,750 km · 4,724 nm
11h 8m
estimated nonstop flight time
-15h
time difference · heading northeast
See live DSO→HLN fares Phone-only fares on this route — call free
Flight time details
5,437 miles nonstop takes roughly 11h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- DSO — Sondok Airport · Hamhung, North Korea
- 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 DSO
- WOS · Wonsan Kalma International Airport40 mi away
- FNJ · Pyongyang Sunan International Airport103 mi away
- YNY · Yangyang International Airport133 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 DSO from HLN?
The flight distance from Hamhung (DSO) to Helena (HLN) is 5,437 miles (8,750 km, 4,724 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DSO to HLN?
A nonstop flight takes about 11h 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 time difference between Hamhung and Helena?
Helena is 15 hours behind Hamhung.
What is the cheapest way to fly from DSO to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DSO–HLN that never appear on search engines, with no booking fees.