Need help booking?
Unpublished phone-only deals available
BTM to PMH: distance & flight time
Butte (Bert Mooney Airport) → Portsmouth (Greater Portsmouth Regional Airport)
1,580 mi
2,543 km · 1,373 nm
3h 34m
estimated nonstop flight time
—
time difference · heading east
See live BTM→PMH fares Phone-only fares on this route — call free
Flight time details
1,580 miles nonstop takes roughly 3h 34m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- BTM — Bert Mooney Airport · Butte, United States
- PMH — Greater Portsmouth Regional Airport · Portsmouth, 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 BTM
- HLN · Helena Regional Airport51 mi away
- BZN · Gallatin Field66 mi away
- SMN · Lemhi County Airport88 mi away
- LVM · Mission Field100 mi away
Near PMH
- HTS · Tri-State/Milton J. Ferguson Field36 mi away
- ATO · Ohio University Snyder Field42 mi away
- ILN · Wilmington Airpark65 mi away
- LCK · Rickenbacker International Airport67 mi away
Frequently asked questions
How far is BTM from PMH?
The flight distance from Butte (BTM) to Portsmouth (PMH) is 1,580 miles (2,543 km, 1,373 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BTM to PMH?
A nonstop flight takes about 3h 34m 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 cheapest way to fly from BTM to PMH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BTM–PMH that never appear on search engines, with no booking fees.