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GRM to THR: distance & flight time
Grand Marais (Grand Marais Cook County Airport) → Teheran (Mehrabad International Airport)
6,200 mi
9,978 km · 5,388 nm
12h 37m
estimated nonstop flight time
+8.5h
time difference · heading northeast
See live GRM→THR fares Phone-only fares on this route — call free
Flight time details
6,200 miles nonstop takes roughly 12h 37m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8.5-hour time gain when reading arrival times on your ticket.
The two airports
- GRM — Grand Marais Cook County Airport · Grand Marais, United States
- THR — Mehrabad International Airport · Teheran, Iran
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 THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Frequently asked questions
How far is GRM from THR?
The flight distance from Grand Marais (GRM) to Teheran (THR) is 6,200 miles (9,978 km, 5,388 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRM to THR?
A nonstop flight takes about 12h 37m 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 Teheran?
Teheran is 8.5 hours ahead of Grand Marais.
What is the cheapest way to fly from GRM to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRM–THR that never appear on search engines, with no booking fees.