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ROI to ONT: distance & flight time

Roi Et (Roi Et Airport) → Ontario (Ontario International Airport)

8,030 mi
12,923 km · 6,978 nm
16h 13m
estimated nonstop flight time
-14h
time difference · heading northeast
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Flight time details

8,030 miles nonstop takes roughly 16h 13m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-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 ROI from ONT?

The flight distance from Roi Et (ROI) to Ontario (ONT) is 8,030 miles (12,923 km, 6,978 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from ROI to ONT?

A nonstop flight takes about 16h 13m 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 Roi Et and Ontario?

Ontario is 14 hours behind Roi Et.

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

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ROI–ONT that never appear on search engines, with no booking fees.
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