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OSC to GRM: distance & flight time
Oscoda (Oscoda Wurtsmith Airport) → Grand Marais (Grand Marais Cook County Airport)
408 mi
657 km · 355 nm
1h 21m
estimated nonstop flight time
-1h
time difference · heading northwest
See live OSC→GRM fares Phone-only fares on this route — call free
Flight time details
408 miles nonstop takes roughly 1h 21m 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
- OSC — Oscoda Wurtsmith Airport · Oscoda, United States
- 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 OSC
- ECA · Iosco County Airport10 mi away
- APN · Alpena County Regional Airport44 mi away
- HTL · Roscommon County - Blodgett Memorial Airport63 mi away
- GDW · Gladwin Zettel Memorial Airport63 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 OSC from GRM?
The flight distance from Oscoda (OSC) to Grand Marais (GRM) is 408 miles (657 km, 355 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSC to GRM?
A nonstop flight takes about 1h 21m 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 Oscoda and Grand Marais?
Grand Marais is 1 hour behind Oscoda.
What is the cheapest way to fly from OSC to GRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSC–GRM that never appear on search engines, with no booking fees.