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GRM to BOI: distance & flight time
Grand Marais (Grand Marais Cook County Airport) → Boise (Boise Air Terminal/Gowen Field)
1,275 mi
2,052 km · 1,108 nm
3h 14m
estimated nonstop flight time
-1h
time difference · heading west
See live GRM→BOI fares Phone-only fares on this route — call free
Flight time details
1,275 miles nonstop takes roughly 3h 14m gate to gate, flying west. 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
- GRM — Grand Marais Cook County Airport · Grand Marais, United States
- BOI — Boise Air Terminal/Gowen Field · Boise, 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 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
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
Frequently asked questions
How far is GRM from BOI?
The flight distance from Grand Marais (GRM) to Boise (BOI) 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 GRM to BOI?
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 Grand Marais and Boise?
Boise is 1 hour behind Grand Marais.
What is the cheapest way to fly from GRM to BOI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRM–BOI that never appear on search engines, with no booking fees.