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GAI to OSH: distance & flight time
Gaithersburg (Montgomery County Airpark) → Oshkosh (Wittman Regional Airport)
675 mi
1,087 km · 587 nm
1h 56m
estimated nonstop flight time
-1h
time difference · heading northwest
See live GAI→OSH fares Phone-only fares on this route — call free
Flight time details
675 miles nonstop takes roughly 1h 56m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- OSH — Wittman Regional Airport · Oshkosh, 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 GAI
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
Frequently asked questions
How far is GAI from OSH?
The flight distance from Gaithersburg (GAI) to Oshkosh (OSH) is 675 miles (1,087 km, 587 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to OSH?
A nonstop flight takes about 1h 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 Gaithersburg and Oshkosh?
Oshkosh is 1 hour behind Gaithersburg.
What is the cheapest way to fly from GAI to OSH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–OSH that never appear on search engines, with no booking fees.