BOS to BWI: Distance and Flight Time

How far is it from Boston to Baltimore?

The great-circle distance between Boston Logan International Airport (BOS) and Baltimore/Washington International Thurgood Marshall Airport (BWI) is 594 km (369 mi, 321 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.

How long is the flight from BOS to BWI?

A nonstop flight typically takes about 1h 15m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. BWI is roughly southwest of BOS.

How is the BOS to BWI route written in code?

The pair is written BOS-BWI in IATA codes and KBOS-KBWI in ICAO codes, the form used on a flight plan. Boston Logan International Airport is BOS (KBOS), Baltimore/Washington International Thurgood Marshall Airport is BWI (KBWI).

Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.

BWI sits 126 ft (38 m) higher than BOS, which is a real difference in air density on takeoff.

Airlines flying BOS to BWI

2 airlines appear on this route in the open route dataset, 2 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:

A further 1 carrier sell this pair as a codeshare without operating it: FL.

Route and carrier data comes from the OpenFlights open dataset, regenerated here on 3 July 2026. It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.

Frequently asked questions

Related routes

Other routes from Boston (BOS):

Other routes from Baltimore (BWI):

BOS airport code · BWI airport code · Busiest airports worldwide