Need help booking?
Unpublished phone-only deals available
TDX to HLN: distance & flight time
Trat (Trat Airport) → Helena (Helena Regional Airport)
7,848 mi
12,630 km · 6,820 nm
15h 51m
estimated nonstop flight time
-13h
time difference · heading northeast
See live TDX→HLN fares Phone-only fares on this route — call free
Flight time details
7,848 miles nonstop takes roughly 15h 51m 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
- TDX — Trat Airport · Trat, 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 TDX
- BBM · Battambang Airport83 mi away
- UTP · U-Tapao International Airport93 mi away
- REP · Siem Reap International Airport128 mi away
- BKK · Suvarnabhumi Airport144 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 TDX from HLN?
The flight distance from Trat (TDX) to Helena (HLN) is 7,848 miles (12,630 km, 6,820 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TDX to HLN?
A nonstop flight takes about 15h 51m 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 Trat and Helena?
Helena is 13 hours behind Trat.
What is the cheapest way to fly from TDX to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TDX–HLN that never appear on search engines, with no booking fees.