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HLN to NST: distance & flight time
Helena (Helena Regional Airport) → Nakhon Si Thammarat (Nakhon Si Thammarat Airport)
8,150 mi
13,115 km · 7,082 nm
16h 27m
estimated nonstop flight time
+13h
time difference · heading northwest
See live HLN→NST fares Phone-only fares on this route — call free
Flight time details
8,150 miles nonstop takes roughly 16h 27m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, Thailand
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 NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 mi away
Frequently asked questions
How far is HLN from NST?
The flight distance from Helena (HLN) to Nakhon Si Thammarat (NST) is 8,150 miles (13,115 km, 7,082 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to NST?
A nonstop flight takes about 16h 27m 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 Nakhon Si Thammarat?
Nakhon Si Thammarat is 13 hours ahead of Helena.
What is the cheapest way to fly from HLN to NST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–NST that never appear on search engines, with no booking fees.