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PSM to ROI: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Roi Et (Roi Et Airport)
8,332 mi
13,410 km · 7,241 nm
16h 48m
estimated nonstop flight time
+11h
time difference · heading north
See live PSM→ROI fares Phone-only fares on this route — call free
Flight time details
8,332 miles nonstop takes roughly 16h 48m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- PSM — Portsmouth International at Pease Airport · Portsmouth, United States
- ROI — Roi Et Airport · Roi Et, Thailand
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 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
Near ROI
- KKC · Khon Kaen Airport70 mi away
- BFV · Buri Ram Airport70 mi away
- ZVK · Savannakhet Airport72 mi away
- SNO · Sakon Nakhon Airport78 mi away
Frequently asked questions
How far is PSM from ROI?
The flight distance from Portsmouth (PSM) to Roi Et (ROI) is 8,332 miles (13,410 km, 7,241 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to ROI?
A nonstop flight takes about 16h 48m 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 Portsmouth and Roi Et?
Roi Et is 11 hours ahead of Portsmouth.
What is the cheapest way to fly from PSM to ROI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–ROI that never appear on search engines, with no booking fees.