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OSH to PSM: distance & flight time
Oshkosh (Wittman Regional Airport) → Portsmouth (Portsmouth International at Pease Airport)
889 mi
1,430 km · 772 nm
2h 24m
estimated nonstop flight time
+1h
time difference · heading east
See live OSH→PSM fares Phone-only fares on this route — call free
Flight time details
889 miles nonstop takes roughly 2h 24m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- OSH — Wittman Regional Airport · Oshkosh, 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 OSH
- FLD · Fond du Lac County Airport15 mi away
- ATW · Appleton International Airport19 mi away
- SBM · Sheboygan County Memorial Airport38 mi away
- GRB · Austin Straubel International Airport41 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 OSH from PSM?
The flight distance from Oshkosh (OSH) to Portsmouth (PSM) is 889 miles (1,430 km, 772 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSH to PSM?
A nonstop flight takes about 2h 24m 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 Oshkosh and Portsmouth?
Portsmouth is 1 hour ahead of Oshkosh.
What is the cheapest way to fly from OSH to PSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSH–PSM that never appear on search engines, with no booking fees.