Washington D.C. To Baltimore Distance (DCA To BWI)

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How Far Is Baltimore, MD from Washington D.C.?

The air distance between Washington D.C. (Ronald Reagan Washington National Airport – DCA) and Baltimore (Baltimore–Washington International Airport – BWI) is 29.9 miles (48.1 kilometers or 26 nautical miles).

The driving distance from Washington D.C. to Baltimore is 35 miles (56.4 kilometers), with an estimated driving time of approximately 55 minutes.

29.9 Air miles 48.1 Air kilometers 26 Nautical miles 35 Driving miles 56.4 Driving kilometers 55 min Driving time

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Air Distance from Washington D.C. to Baltimore

There are several ways to calculate the straight-line (as-the-crow-flies) distance between Washington D.C. to Baltimore. This is also known as the great-circle distance — the shortest path between two points on the Earth's surface.

Below are two commonly used methods for calculating this distance:

Vincenty's formula (applied above)

• 29.9 miles
• 48.1 kilometers
• 26 nautical miles

Vincenty's formula calculates the geodesic distance between two points on the Earth's surface using an ellipsoidal model of the planet. It provides high accuracy by accounting for the Earth's flattening at the poles, making it more precise than spherical models.

Haversine formula

• 29.9 miles
• 48.1 kilometers
• 26 nautical miles

The haversine formula estimates the distance between two points on a sphere. It assumes the Earth is a perfect sphere, which simplifies the calculation but introduces slight inaccuracies compared to ellipsoidal models.

Map of the flight path and driving route from Washington D.C. to Baltimore

See the shortest flight path from Ronald Reagan Washington National Airport (DCA) to Baltimore–Washington International Airport (BWI), along with the recommended driving route.

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Airport information

Origin	Ronald Reagan Washington National Airport
City:	Washington D.C.
Country:	US
IATA Code:	DCA
ICAO Code:	KDCA
Coordinates:	38°51′7″N, 77°2′15″W

Destination	Baltimore–Washington International Airport
City:	Baltimore, MD
Country:	US
IATA Code:	BWI
ICAO Code:	KBWI
Coordinates:	39°10′31″N, 76°40′5″W

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How long does it take to fly from Washington D.C. to Baltimore?

The estimated flight time from Ronald Reagan Washington National Airport to Baltimore–Washington International Airport is 33 minutes.

What is the time difference between Washington D.C. and Baltimore?

There is no time difference between Washington D.C. and Baltimore.

Flight carbon footprint between Ronald Reagan Washington National Airport (DCA) and Baltimore–Washington International Airport (BWI)

A direct flight from Washington D.C. to Baltimore produces approximately 29 kilograms (65 pounds) of CO₂ per passenger, on average.

This estimate accounts for emissions from jet fuel combustion only and does not include additional climate effects such as contrails or high-altitude impacts.