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IAD to HLN: distance & flight time
Washington (Washington Dulles International Airport) → Helena (Helena Regional Airport)
1,813 mi
2,918 km · 1,575 nm
4h 1m
estimated nonstop flight time
-2h
time difference · heading northwest
See live IAD→HLN fares Phone-only fares on this route — call free
Flight time details
1,813 miles nonstop takes roughly 4h 1m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, United States
- 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 IAD
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 IAD from HLN?
The flight distance from Washington (IAD) to Helena (HLN) is 1,813 miles (2,918 km, 1,575 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to HLN?
A nonstop flight takes about 4h 1m 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 Washington and Helena?
Helena is 2 hours behind Washington.
What is the cheapest way to fly from IAD to HLN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–HLN that never appear on search engines, with no booking fees.