Distance From Butler Memorial Airport to Ontario International Airport, BUM - ONT Distance

The distance from Butler Memorial Airport (BUM) to Ontario International Airport (ONT) is 1327 miles or 2135 kilometers or 1152 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 Butler ( United States ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Butler and Ontario takes around 3 hours 3 minutes.

Estimated flight time from Butler Memorial Airport, Butler, United States to Ontario International Airport, Ontario, United States is 3 hours 3 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 • BUM - ONT

Kilometers		2135 km
Statute Miles		1327 miles
Nautical Miles		1152 nm
Avg. Time of Flight		3 hours 3 minutes

Butler Memorial Airport to Ontario International Airport Flight Route Map - BUM to ONT Flight Path

Location of Butler Memorial Airport & Ontario International Airport is given below.
Click the map to view Butler to Ontario nonstop flight path and travel direction.

Click to see flight route on Google Map between Butler, United States and Ontario, United States. .

Nonstop flight route between Butler, United States and Ontario, United States.

Time Difference Between the Airports • BUM - ONT

Time difference between Butler (United States) and Ontario (United States) is 3 Hours.
Ontario time is 3 Hours behind Butler.

Location	Local Time
Butler (United States)	2026-06-21, 18:15:58 EDT
Ontario (United States)	2026-06-21, 15:15:58 PDT

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

Butler Memorial Airport (BUM / KBUM) Butler, United States

Destination

Ontario International Airport (ONT / KONT) Ontario, United States