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OSP to GRM: distance & flight time
Slupsk (Redzikowo Air Base) → Grand Marais (Grand Marais Cook County Airport)
4,209 mi
6,774 km · 3,657 nm
8h 43m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSP→GRM fares Phone-only fares on this route — call free
Flight time details
4,209 miles nonstop takes roughly 8h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- OSP — Redzikowo Air Base · Slupsk, Poland
- GRM — Grand Marais Cook County Airport · Grand Marais, 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 OSP
- GDN · Gdańsk Lech Wałęsa Airport55 mi away
- QYD · Oksywie Military Air Base57 mi away
- RNN · Bornholm Airport102 mi away
- BZG · Bydgoszcz Ignacy Jan Paderewski Airport102 mi away
Near GRM
- YQT · Thunder Bay Airport61 mi away
- LYU · Ely Municipal Airport67 mi away
- YIB · Atikokan Municipal Airport87 mi away
- CMX · Houghton County Memorial Airport100 mi away
Frequently asked questions
How far is OSP from GRM?
The flight distance from Slupsk (OSP) to Grand Marais (GRM) is 4,209 miles (6,774 km, 3,657 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSP to GRM?
A nonstop flight takes about 8h 43m 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 Slupsk and Grand Marais?
Grand Marais is 7 hours behind Slupsk.
What is the cheapest way to fly from OSP to GRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSP–GRM that never appear on search engines, with no booking fees.