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HLN to PRM: distance & flight time
Helena (Helena Regional Airport) → Portimao (Portimão Airport)
4,963 mi
7,987 km · 4,312 nm
10h 12m
estimated nonstop flight time
+7h
time difference · heading northeast
See live HLN→PRM fares Phone-only fares on this route — call free
Flight time details
4,963 miles nonstop takes roughly 10h 12m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- HLN — Helena Regional Airport · Helena, United States
- PRM — Portimão Airport · Portimao, Portugal
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 PRM
- FAO · Faro Airport35 mi away
- BYJ · Beja Airport / Airbase73 mi away
- CAT · Cascais Airport117 mi away
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)117 mi away
Frequently asked questions
How far is HLN from PRM?
The flight distance from Helena (HLN) to Portimao (PRM) is 4,963 miles (7,987 km, 4,312 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to PRM?
A nonstop flight takes about 10h 12m 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 Portimao?
Portimao is 7 hours ahead of Helena.
What is the cheapest way to fly from HLN to PRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–PRM that never appear on search engines, with no booking fees.