Washington DC is unusual among major capitals in being served by three airports, and which one you land at changes the whole transfer question. Reagan National (DCA) is inside the city and directly on the Metro — by far the simplest arrival. Dulles (IAD), out in Virginia, now has its own Metro line. Baltimore-Washington (BWI), roughly midway between the two cities, relies on train services rather than the Metro. Here is how to get into town from each.
From Reagan National (DCA): the easiest of the three
DCA sits just across the Potomac from downtown, and its biggest advantage is a Metro station built directly into the airport complex, connected to the terminals by a short covered walkway.
Metro (Blue and Yellow lines)
The Blue Line and Yellow Line both call at Reagan National Airport station, reaching central destinations — L'Enfant Plaza, Metro Center, Gallery Place — in roughly 15–20 minutes. Trains run frequently through the day, less often in the evenings. Fares are paid with a SmarTrip card (WMATA's rechargeable smartcard) or a contactless bank card tapped at the gates, and are calculated by distance, with a small peak/off-peak variation.
This is, without much competition, the simplest airport-to-city transfer of any major US capital: no shuttle bus, no separate express train, just walk from arrivals to the platform.
Taxi and rideshare from DCA
Taxis and rideshare pick up from designated zones outside each terminal. Given how close DCA is to downtown, journeys typically take 10–20 minutes in normal traffic, and fares are correspondingly modest compared with a trip from either of the other two airports. This is a reasonable option for late-night arrivals, groups, or travellers with a lot of luggage.
From Dulles (IAD): the Silver Line changes the picture
Dulles sits around 40 km west of downtown in Virginia, and for years its only rail-adjacent option was a bus to a distant Metro station. That changed with the extension of the Silver Line directly to the airport.
Metro Silver Line
The Silver Line now runs from a station inside the Dulles terminal complex, reached via an elevated walkway, all the way into DC — calling at East Falls Church, Rosslyn, Metro Center and onward through downtown. Journey time to Metro Center is roughly 55–65 minutes, and the fare is the standard WMATA distance-based rate, paid with SmarTrip or a contactless card — far cheaper than a taxi covering the same distance.
The Silver Line is a genuine improvement on the old bus-to-Metro connection, and for most travellers without heavy luggage or a very late arrival, it's now the sensible default.
Bus and taxi from Dulles
The Silver Line Express bus and various shuttle services still operate for travellers who prefer a direct coach connection to the Metro system, though with the Silver Line now running to the airport directly, these have become less essential. Taxis and rideshare from Dulles to downtown take roughly 45–60 minutes depending on traffic on the Dulles Access Road and the Beltway, with fares considerably higher than the Metro fare — a realistic option for late arrivals, groups, or anyone unwilling to manage luggage on the train.
From BWI: trains, not Metro
Baltimore-Washington International sits roughly midway between the two cities it's named for, around 50 km from downtown DC. It is not served by the WMATA Metro system at all — the connection instead runs via mainline rail.
MARC Train
The MARC commuter rail (Penn Line) connects BWI Rail Station — reached from the terminals by a short free shuttle bus — to Washington Union Station in around 30–40 minutes. MARC is inexpensive but runs on a commuter schedule, meaning frequent service on weekdays and much sparser (or in some cases no) service on weekends and holidays — check the timetable carefully if you're arriving outside weekday commuting hours.
Amtrak
Amtrak also calls at BWI Rail Station on several Northeast Corridor services, reaching Union Station in a broadly similar journey time to MARC but at a higher fare, with the advantage of running every day of the week, including weekends, and later into the evening. For travellers arriving outside MARC's operating window, Amtrak is often the only rail option.
Taxi and rideshare from BWI
Given the distance, taxi and rideshare fares from BWI to downtown DC run noticeably higher than from either DCA or Dulles, with journey times of 45–70 minutes depending on traffic on I-95 and the Baltimore-Washington Parkway. BWI is, in practice, closer to Baltimore than to DC, and travellers whose plans include both cities sometimes find it a convenient midpoint rather than a straightforward "DC airport."
Which airport should you choose, if you have a choice?
If your itinerary allows a choice of arrival airport, DCA is the most convenient for a DC-focused trip — closest, cheapest transfer, and directly on the Metro. Dulles is the main hub for long-haul international flights and, since the Silver Line extension, is a perfectly manageable second choice. BWI tends to have the airline with the lowest fares (particularly for domestic and budget carriers) but adds real transfer time and cost, and is worth it mainly if the flight savings are substantial or if Baltimore is also on your itinerary.
For onward travel once you're in the city, see our guide to Washington to Baltimore or south along the Northeast Corridor to Richmond. For the wider Amtrak corridor, our New York to Washington guide covers the Acela and Northeast Regional in detail.
Frequently asked questions
Which Washington DC airport is closest to downtown?
Reagan National (DCA) is by far the closest, sitting just across the Potomac with its own Metro station built into the terminal complex — journeys to central DC take roughly 15–20 minutes.
Can I take the Metro all the way from Dulles Airport?
Yes. The Silver Line now runs directly from a station inside the Dulles terminal into downtown DC, taking roughly 55–65 minutes to Metro Center at the standard WMATA fare — no separate bus connection required.
Is there a direct train from BWI to Washington DC?
Yes, via a short shuttle bus to BWI Rail Station, then either MARC (cheaper, weekday-focused commuter schedule) or Amtrak (pricier, runs daily including weekends) to Union Station in around 30–40 minutes.
Which Washington airport has the cheapest flights?
This varies by route and season, but BWI is often associated with lower domestic and budget-carrier fares. Factor in the longer, costlier ground transfer to DC when comparing the overall price against flying into DCA or Dulles.
Sources and further reading:
- WMATA — Metro Silver, Blue and Yellow line maps, fares and SmarTrip information.
- MARC Train and Amtrak — timetables and fares for the Penn Line and Northeast Corridor.
- Metropolitan Washington Airports Authority — official Dulles and Reagan National transfer information.