Distance From Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni to Buffalo Niagara International Airport, IWK - BUF Distance

The distance from Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni (IWK) to Buffalo Niagara International Airport (BUF) is 6763 miles or 10883 kilometers or 5873 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 Iwakuni ( Japan ) to Buffalo ( United States )?

A one-way nonstop (direct) flight between Iwakuni and Buffalo takes around 15 hours 32 minutes.

Estimated flight time from Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni, Iwakuni, Japan to Buffalo Niagara International Airport, Buffalo, United States is 15 hours 32 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 • IWK - BUF

Kilometers		10883 km
Statute Miles		6763 miles
Nautical Miles		5873 nm
Avg. Time of Flight		15 hours 32 minutes

Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni to Buffalo Niagara International Airport Flight Route Map - IWK to BUF Flight Path

Location of Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni & Buffalo Niagara International Airport is given below.
Click the map to view Iwakuni to Buffalo nonstop flight path and travel direction.

Click to see flight route on Google Map between Iwakuni, Japan and Buffalo, United States. .

Nonstop flight route between Iwakuni, Japan and Buffalo, United States.

Time Difference Between the Airports • IWK - BUF

Time difference between Iwakuni (Japan) and Buffalo (United States) is 13 Hours.
Buffalo time is 13 Hours behind Iwakuni.

Location	Local Time
Iwakuni (Japan)	2026-05-05, 01:30:00 JST
Buffalo (United States)	2026-05-04, 12:30:00 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

Iwakuni Kintaikyo Airport / Marine Corps Air Station Iwakuni (IWK / RJOI) Iwakuni, Japan

Destination

Buffalo Niagara International Airport (BUF / KBUF) Buffalo, United States