Distance From Iwaya Dam Heliport to John Glenn Columbus International Airport

The distance from Iwaya Dam Heliport () to John Glenn Columbus International Airport (CMH) is 6616 miles or 10647 kilometers or 5745 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 Gero ( Japan ) to Columbus ( United States )?

A one-way nonstop (direct) flight between Gero and Columbus takes around 15 hours 12 minutes.

Estimated flight time from Iwaya Dam Heliport, Gero, Japan to John Glenn Columbus International Airport, Columbus, United States is 15 hours 12 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 • - CMH

Kilometers		10647 km
Statute Miles		6616 miles
Nautical Miles		5745 nm
Avg. Time of Flight		15 hours 12 minutes

Iwaya Dam Heliport to John Glenn Columbus International Airport Flight Route Map - to CMH Flight Path

Location of Iwaya Dam Heliport & John Glenn Columbus International Airport is given below.
Click the map to view Gero to Columbus nonstop flight path and travel direction.

Click to see flight route on Google Map between Gero, Japan and Columbus, United States. .

Nonstop flight route between Gero, Japan and Columbus, United States.

Time Difference Between the Airports • - CMH

Time difference between Gero (Japan) and Columbus (United States) is 13 Hours.
Columbus time is 13 Hours behind Gero.

Location	Local Time
Gero (Japan)	2026-06-19, 09:45:51 JST
Columbus (United States)	2026-06-18, 20:45:51 EDT

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

Iwaya Dam Heliport ( / ) Gero, Japan

Destination

John Glenn Columbus International Airport (CMH / KCMH) Columbus, United States