Distance From Barton Hall Airfield to Ontario International Airport

The distance from Barton Hall Airfield () to Ontario International Airport (ONT) is 2280 miles or 3670 kilometers or 1980 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.

---

How long does it take to travel from Leonardtown ( United States ) to Ontario ( United States )?

A one-way nonstop (direct) flight between Leonardtown and Ontario takes around 5 hours 14 minutes.

Estimated flight time from Barton Hall Airfield, Leonardtown, United States to Ontario International Airport, Ontario, United States is 5 hours 14 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 • - ONT

Kilometers		3670 km
Statute Miles		2280 miles
Nautical Miles		1980 nm
Avg. Time of Flight		5 hours 14 minutes

Barton Hall Airfield to Ontario International Airport Flight Route Map - to ONT Flight Path

Location of Barton Hall Airfield & Ontario International Airport is given below.
Click the map to view Leonardtown to Ontario nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • - ONT

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

Location	Local Time
Leonardtown (United States)	2025-01-03, 08:02:04 EST
Ontario (United States)	2025-01-03, 05:02:04 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

Barton Hall Airfield ( / 39MD) Leonardtown, United States

Destination

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