Distance From Onomichi Seaplane Base to Mehrabad International Airport

The distance from Onomichi Seaplane Base () to Mehrabad International Airport (THR) is 4489 miles or 7224 kilometers or 3898 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 Onomichi ( Japan ) to Tehran ( Iran )?

A one-way nonstop (direct) flight between Onomichi and Tehran takes around 10 hours 19 minutes.

Estimated flight time from Onomichi Seaplane Base, Onomichi, Japan to Mehrabad International Airport, Tehran, Iran is 10 hours 19 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		7224 km
Statute Miles		4489 miles
Nautical Miles		3898 nm
Avg. Time of Flight		10 hours 19 minutes

Onomichi Seaplane Base to Mehrabad International Airport Flight Route Map - to THR Flight Path

Location of Onomichi Seaplane Base & Mehrabad International Airport is given below.
Click the map to view Onomichi to Tehran nonstop flight path and travel direction.

Click to see flight route on Google Map between Onomichi, Japan and Tehran, Iran. .

Nonstop flight route between Onomichi, Japan and Tehran, Iran.

Time Difference Between the Airports • - THR

Time difference between Onomichi (Japan) and Tehran (Iran) is 5 Hours 30 Minutes.
Tehran time is 5 Hours 30 Minutes behind Onomichi.

Location	Local Time
Onomichi (Japan)	2026-03-20, 18:27:35 JST
Tehran (Iran)	2026-03-20, 12:57:35 +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

Onomichi Seaplane Base ( / ) Onomichi, Japan

Destination

Mehrabad International Airport (THR / OIII) Tehran, Iran