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GRM to OMO: distance & flight time
Grand Marais (Grand Marais Cook County Airport) → Mostar (Mostar International Airport)
4,780 mi
7,693 km · 4,154 nm
9h 50m
estimated nonstop flight time
+7h
time difference · heading northeast
See live GRM→OMO fares Phone-only fares on this route — call free
Flight time details
4,780 miles nonstop takes roughly 9h 50m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- GRM — Grand Marais Cook County Airport · Grand Marais, United States
- OMO — Mostar International Airport · Mostar, Bosnia and Herzegovina
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 OMO
- SJJ · Sarajevo International Airport45 mi away
- DBV · Dubrovnik Airport54 mi away
- BWK · Bol Airport59 mi away
- TIV · Tivat Airport75 mi away
Frequently asked questions
How far is GRM from OMO?
The flight distance from Grand Marais (GRM) to Mostar (OMO) is 4,780 miles (7,693 km, 4,154 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRM to OMO?
A nonstop flight takes about 9h 50m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GRM to OMO?
Nonstop service on GRM–OMO depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 9h 50m nonstop estimate.
What is the time difference between Grand Marais and Mostar?
Mostar is 7 hours ahead of Grand Marais.
What is the cheapest way to fly from GRM to OMO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRM–OMO that never appear on search engines, with no booking fees.
Why are some GRM to OMO fares phone-only?
Consolidator contracts let us sell certain GRM–OMO tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.