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BOI to GRM: distance & flight time
Boise (Boise Air Terminal/Gowen Field) → Grand Marais (Grand Marais Cook County Airport)
1,275 mi
2,052 km · 1,108 nm
3h 14m
estimated nonstop flight time
+1h
time difference · heading east
See live BOI→GRM fares Phone-only fares on this route — call free
Flight time details
1,275 miles nonstop takes roughly 3h 14m 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
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 BOI
- MUO · Mountain Home Air Force Base40 mi away
- ONO · Ontario Municipal Airport50 mi away
- MYL · McCall Municipal Airport92 mi away
- SUN · Friedman Memorial Airport97 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 BOI from GRM?
The flight distance from Boise (BOI) to Grand Marais (GRM) is 1,275 miles (2,052 km, 1,108 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BOI to GRM?
A nonstop flight takes about 3h 14m 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 Boise and Grand Marais?
Grand Marais is 1 hour ahead of Boise.
What is the cheapest way to fly from BOI to GRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BOI–GRM that never appear on search engines, with no booking fees.