Distance From Nashua Airport / Boire Field to Ontario International Airport, ASH - ONT Distance

The distance from Nashua Airport / Boire Field (ASH) to Ontario International Airport (ONT) is 2534 miles or 4078 kilometers or 2201 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 Nashua ( United States ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Nashua and Ontario takes around 5 hours 49 minutes.

Estimated flight time from Nashua Airport / Boire Field, Nashua, United States to Ontario International Airport, Ontario, United States is 5 hours 49 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 • ASH - ONT

Kilometers		4078 km
Statute Miles		2534 miles
Nautical Miles		2201 nm
Avg. Time of Flight		5 hours 49 minutes

Nashua Airport / Boire Field to Ontario International Airport Flight Route Map - ASH to ONT Flight Path

Location of Nashua Airport / Boire Field & Ontario International Airport is given below.
Click the map to view Nashua to Ontario nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • ASH - ONT

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

Location	Local Time
Nashua (United States)	2025-12-06, 00:07:07 EST
Ontario (United States)	2025-12-05, 21:07:07 PST

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

Nashua Airport / Boire Field (ASH / KASH) Nashua, United States

Destination

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