BWI Airport to Washington, D.C.

The short version

Baltimore/Washington International Thurgood Marshall Airport (airport code BWI) sits roughly midway between Baltimore and Washington, in Maryland to the northeast of the District. It is the farthest of the three regional airports from the DC monuments, but it earns its place on a DC trip in two situations: when a fare into BWI is meaningfully cheaper than Reagan National or Dulles, and when you happen to be splitting time between Washington and Baltimore. Crucially, it is well connected to the capital by rail.

The key fact is the BWI rail station, a short free shuttle ride from the terminal. From that station two different train services run south into Washington's Union Station: MARC, the regional commuter rail, and Amtrak, the national intercity network. From Union Station you are on Capitol Hill, on the Metro and a short ride or walk from much of the city. That train link is what makes BWI viable for a DC visit despite the distance — without it, the airport would be an awkward base.

For door-to-door simplicity you can also take a taxi or a rideshare such as Uber or Lyft the whole way, but it is a long, costly trip from BWI to central DC, longer and pricier than from the closer airports. The honest summary: if BWI saved you real money on the flight, ride the train in; if it did not, weigh whether one of the closer airports would have been simpler overall.

By train (MARC and Amtrak) — the reason to use BWI

From the terminal, take the free airport shuttle to the BWI rail station; follow the signage from baggage claim, and allow time for the shuttle on top of the train wait. At the station, MARC's Penn Line and Amtrak both serve Washington Union Station, so you have two distinct services to choose between on the same platform.

MARC, the Maryland commuter rail, is the budget choice — its single fares are inexpensive, and the ride into Union Station is straightforward. The catch is the schedule: MARC is built around weekday commuters, so service is concentrated on weekday peaks and is much thinner — or absent on parts of the network — on weekends and late at night. Before you rely on MARC, check the current timetable for your actual arrival day and time, because a great-value option is no use if the next train is hours away.

Amtrak runs the same corridor more frequently across the week, including weekends, and is faster, but it costs considerably more than MARC and prices vary with demand. It is the better pick for weekend arrivals, late flights or anyone who would rather not orbit a commuter timetable. Either way you arrive at Union Station, from which you can transfer to the Metro's Red Line, walk to nearby Capitol Hill hotels, or grab a short taxi onward. Both train fares and schedules change, so verify them on the operators' own sites before you travel.

By taxi, rideshare and bus

Taxis queue outside baggage claim, and rideshare apps such as Uber and Lyft operate from a designated pickup area — follow the airport's signs and the app's pin. A car all the way into central DC is the simplest door-to-door option, and the easiest with heavy luggage or a late arrival, but expect a long ride and a high fare given the distance; both stretch further in traffic. For a group splitting the cost it can be reasonable; for a solo traveller on a budget, the train is the clear winner.

Some long-distance and intercity buses also serve the BWI area or connect Baltimore and Washington, which can occasionally be the cheapest option of all if the timing lines up. As with the trains, these are schedule-driven, so check current routes and times rather than assuming a bus will be waiting. For most visitors, though, the rail station is the cleaner answer.

Is BWI the right airport for a DC trip?

Be honest about why you are flying into BWI. If the fare was significantly lower than Reagan National or Dulles, or you are combining DC with time in Baltimore, BWI makes good sense — ride MARC or Amtrak into Union Station and treat the train as part of the adventure. Budget-minded travellers in particular can pair a cheap BWI fare with the inexpensive MARC ticket for a genuinely low-cost arrival, schedule permitting.

If, on the other hand, you booked BWI without comparing the alternatives, know that Reagan National (DCA) is much closer and sits directly on the Metro, making it the easiest airport for the city itself. None of this means BWI is a mistake — it just means the train is doing real work to close the distance, so plan that leg properly. Above all, check the day and time of your arrival against the MARC timetable; the difference between a weekday commute and a quiet Sunday night is the difference between a quick, cheap ride and a long wait.

At a glance

A quick reference for planning the trip in from BWI. Fares and schedules change, and the day of the week matters here — confirm the current details on the official airport, MARC and Amtrak pages before you rely on them.

• Airport: Baltimore/Washington International (BWI), in Maryland between Baltimore and Washington — the farthest of the three from the Mall.
• Key link: a free terminal shuttle to the BWI rail station, where MARC and Amtrak both run to Washington Union Station.
• Cheapest: MARC commuter rail — inexpensive, but a weekday-heavy schedule with limited weekend and late-night service.
• More flexible: Amtrak — faster and runs across the week including weekends, but costs considerably more than MARC.
• Door-to-door: taxi or rideshare the whole way — simplest with heavy bags, but a long, costly trip given the distance.
• Arrive at: Union Station — transfer to the Red Line Metro, walk to Capitol Hill, or take a short taxi onward.
• Best for: travellers who saved money flying into BWI, or anyone combining DC with Baltimore.
• Verify: the MARC timetable for your exact day and time, plus current fares, before you commit to the cheap option.

Common questions

How do I get from BWI to Washington DC? Take the free airport shuttle from the terminal to the BWI rail station, then ride MARC or Amtrak into Washington Union Station. From there you can transfer to the Metro, walk to Capitol Hill hotels, or take a short taxi. A taxi or rideshare straight from the airport is the simpler but costlier alternative.

Is MARC or Amtrak better from BWI? MARC is cheaper but runs a limited, weekday-focused schedule; Amtrak is faster and runs more across the week, including weekends, but costs more. For a weekday daytime arrival on a budget, MARC wins; for weekends, late flights or maximum flexibility, take Amtrak. Verify current schedules.

How long does it take from BWI to DC? The train ride into Union Station is relatively quick, but add the shuttle to the rail station and any wait for the next departure. By car, allow a long trip into central DC — longer in traffic. Because BWI is farther out than the other airports, always build in a buffer.

Is BWI a good airport for visiting DC? Yes, if the fare was meaningfully cheaper or you are also visiting Baltimore — the train link makes it workable. If you simply want the easiest arrival for the city, Reagan National (DCA) is closer and sits on the Metro.

Can I take the Metro from BWI? Not directly — Metrorail does not serve BWI. You reach the Metro by taking MARC or Amtrak into Union Station and changing to the Red Line there, or by taking a taxi or rideshare to a Metro station.

What's the cheapest way from BWI to DC? Usually a MARC commuter-rail ticket into Union Station, if your arrival lines up with the timetable. Some intercity buses between Baltimore and Washington can also be cheap. Always check the current schedule, since MARC service thins out on weekends and at night.