Distance From Chicago Fire Department Air Sea Rescue Heliport to Mehrabad International Airport

The distance from Chicago Fire Department Air Sea Rescue Heliport () to Mehrabad International Airport (THR) is 6488 miles or 10442 kilometers or 5635 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.

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

A one-way nonstop (direct) flight between Chicago and Tehran takes around 14 hours 55 minutes.

Estimated flight time from Chicago Fire Department Air Sea Rescue Heliport, Chicago, United States to Mehrabad International Airport, Tehran, Iran is 14 hours 55 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		10442 km
Statute Miles		6488 miles
Nautical Miles		5635 nm
Avg. Time of Flight		14 hours 55 minutes

Chicago Fire Department Air Sea Rescue Heliport to Mehrabad International Airport Flight Route Map - to THR Flight Path

Location of Chicago Fire Department Air Sea Rescue Heliport & Mehrabad International Airport is given below.
Click the map to view Chicago to Tehran nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - THR

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

Location	Local Time
Chicago (United States)	2026-09-23, 23:04:31 CDT
Tehran (Iran)	2026-09-24, 07:34:31 +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

Chicago Fire Department Air Sea Rescue Heliport ( / LL35) Chicago, United States

Destination

Mehrabad International Airport (THR / OIII) Tehran, Iran