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KUM to ONT: distance & flight time

Yakushima (Yakushima Airport) → Ontario (Ontario International Airport)

6,145 mi
9,889 km · 5,340 nm
12h 31m
estimated nonstop flight time
-16h
time difference · heading northeast
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Flight time details

6,145 miles nonstop takes roughly 12h 31m 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 KUM from ONT?

The flight distance from Yakushima (KUM) to Ontario (ONT) is 6,145 miles (9,889 km, 5,340 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from KUM to ONT?

A nonstop flight takes about 12h 31m 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 Yakushima and Ontario?

Ontario is 16 hours behind Yakushima.

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

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KUM–ONT that never appear on search engines, with no booking fees.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