Distance From Baltimore/Washington International Thurgood Marshall Airport to Ontario International Airport, BWI - ONT Distance

The distance from Baltimore/Washington International Thurgood Marshall Airport (BWI) to Ontario International Airport (ONT) is 2278 miles or 3666 kilometers or 1979 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 Baltimore ( United States ) to Ontario ( United States )?

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

Estimated flight time from Baltimore/Washington International Thurgood Marshall Airport, Baltimore, 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 • BWI - ONT

Kilometers		3666 km
Statute Miles		2278 miles
Nautical Miles		1979 nm
Avg. Time of Flight		5 hours 14 minutes

Baltimore/Washington International Thurgood Marshall Airport to Ontario International Airport Flight Route Map - BWI to ONT Flight Path

Location of Baltimore/Washington International Thurgood Marshall Airport & Ontario International Airport is given below.
Click the map to view Baltimore to Ontario nonstop flight path and travel direction.

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

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

Time Difference Between the Airports • BWI - ONT

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

Location	Local Time
Baltimore (United States)	2025-12-15, 10:44:19 EST
Ontario (United States)	2025-12-15, 07:44:19 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

Baltimore/Washington International Thurgood Marshall Airport (BWI / KBWI) Baltimore, United States

Destination

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