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PSM to UBP: distance & flight time
Portsmouth (Portsmouth International at Pease Airport) → Ubon Ratchathani (Ubon Ratchathani Airport)
8,397 mi
13,514 km · 7,297 nm
16h 56m
estimated nonstop flight time
+11h
time difference · heading north
See live PSM→UBP fares Phone-only fares on this route — call free
Flight time details
8,397 miles nonstop takes roughly 16h 56m 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
- UBP — Ubon Ratchathani Airport · Ubon Ratchathani, 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 UBP
- PKZ · Pakse International Airport61 mi away
- ZVK · Savannakhet Airport90 mi away
- ROI · Roi Et Airport94 mi away
- PXR · Surin Airport95 mi away
Frequently asked questions
How far is PSM from UBP?
The flight distance from Portsmouth (PSM) to Ubon Ratchathani (UBP) is 8,397 miles (13,514 km, 7,297 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSM to UBP?
A nonstop flight takes about 16h 56m 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 Ubon Ratchathani?
Ubon Ratchathani is 11 hours ahead of Portsmouth.
What is the cheapest way to fly from PSM to UBP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSM–UBP that never appear on search engines, with no booking fees.