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

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

The air distance between Washington D.C. (Washington Dulles International Airport – IAD) and Baltimore (Baltimore–Washington International Airport – BWI) is 45.3 miles (72.8 kilometers or 39.3 nautical miles).

The driving distance from Washington D.C. to Baltimore is 57.8 miles (93 kilometers), with an estimated driving time of approximately 1 hour and 17 minutes.

45.3 Air miles 72.8 Air kilometers 39.3 Nautical miles 57.8 Driving miles 93 Driving kilometers 1 h 17 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)

• 45.3 miles
• 72.8 kilometers
• 39.3 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

• 45.2 miles
• 72.7 kilometers
• 39.2 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 Washington Dulles International Airport (IAD) to Baltimore–Washington International Airport (BWI), along with the recommended driving route.

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Airport information

Origin	Washington Dulles International Airport
City:	Washington D.C.
Country:	US
IATA Code:	IAD
ICAO Code:	KIAD
Coordinates:	38°56′40″N, 77°27′20″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 Washington Dulles International Airport to Baltimore–Washington International Airport is 35 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 Washington Dulles International Airport (IAD) and Baltimore–Washington International Airport (BWI)

A direct flight from Washington D.C. to Baltimore produces approximately 32 kilograms (70 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.