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RIW to PSM: distance & flight time
Riverton WY (Riverton Regional Airport) → Portsmouth (Portsmouth International at Pease Airport)
1,883 mi
3,031 km · 1,637 nm
4h 10m
estimated nonstop flight time
+2h
time difference · heading east
See live RIW→PSM fares Phone-only fares on this route — call free
Flight time details
1,883 miles nonstop takes roughly 4h 10m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- RIW — Riverton Regional Airport · Riverton WY, United States
- PSM — Portsmouth International at Pease 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 RIW
- LND · Hunt Field22 mi away
- WRL · Worland Municipal Airport67 mi away
- PWY · Ralph Wenz Field71 mi away
- BPI · Miley Memorial Field90 mi away
Near PSM
- BOS · General Edward Lawrence Logan International Airport50 mi away
- LWM · Lawrence Municipal Airport29 mi away
- MHT · Manchester-Boston Regional Airport33 mi away
- BVY · Beverly Municipal Airport34 mi away
Frequently asked questions
How far is RIW from PSM?
The flight distance from Riverton WY (RIW) to Portsmouth (PSM) is 1,883 miles (3,031 km, 1,637 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RIW to PSM?
A nonstop flight takes about 4h 10m 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 Riverton WY and Portsmouth?
Portsmouth is 2 hours ahead of Riverton WY.
What is the cheapest way to fly from RIW to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RIW–PSM that never appear on search engines, with no booking fees.