Distance From Grayson County Airport to Mehrabad International Airport

The distance from Grayson County Airport () to Mehrabad International Airport (THR) is 6702 miles or 10786 kilometers or 5821 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

---

How long does it take to travel from Leitchfield ( United States ) to Tehran ( Iran )?

A one-way nonstop (direct) flight between Leitchfield and Tehran takes around 15 hours 24 minutes.

Estimated flight time from Grayson County Airport, Leitchfield, United States to Mehrabad International Airport, Tehran, Iran is 15 hours 24 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - THR

Kilometers		10786 km
Statute Miles		6702 miles
Nautical Miles		5821 nm
Avg. Time of Flight		15 hours 24 minutes

Grayson County Airport to Mehrabad International Airport Flight Route Map - to THR Flight Path

Location of Grayson County Airport & Mehrabad International Airport is given below.
Click the map to view Leitchfield to Tehran nonstop flight path and travel direction.

Click to see flight route on Google Map between Leitchfield, United States and Tehran, Iran. .

Nonstop flight route between Leitchfield, United States and Tehran, Iran.

Time Difference Between the Airports • - THR

Time difference between Leitchfield (United States) and Tehran (Iran) is 8 Hours 30 Minutes.
Tehran time is 8 Hours 30 Minutes ahead of Leitchfield.

Location	Local Time
Leitchfield (United States)	2026-03-20, 20:35:13 CDT
Tehran (Iran)	2026-03-21, 05:05:13 +0330

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Grayson County Airport ( / KM20) Leitchfield, United States

Destination

Mehrabad International Airport (THR / OIII) Tehran, Iran