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KMJ to ONT: distance & flight time

Kumamoto (Kumamoto Airport) → Ontario (Ontario International Airport)

6,028 mi
9,701 km · 5,238 nm
12h 17m
estimated nonstop flight time
-16h
time difference · heading northeast
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Flight time details

6,028 miles nonstop takes roughly 12h 17m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.

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The two airports

Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.

Alternate airports can cut this fare

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Frequently asked questions

How far is KMJ from ONT?

The flight distance from Kumamoto (KMJ) to Ontario (ONT) is 6,028 miles (9,701 km, 5,238 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from KMJ to ONT?

A nonstop flight takes about 12h 17m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.

What is the time difference between Kumamoto and Ontario?

Ontario is 16 hours behind Kumamoto.

What is the cheapest way to fly from KMJ to ONT?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KMJ–ONT that never appear on search engines, with no booking fees.
Keep exploring:ONT to KMJ Airports near KMJ Airports near ONT Time difference KMJ–ONT Distance calculator