Transfer to/from - Baltimore airport (BWI)

Transportation

Train

A service from MTA (Tel +1 410 539 5000) departs from the lower level of Concourse E to downtown Baltimore (30 minutes, USD1.90), Timonium and Hunt Valley, with connections to Penn Station. It operates from Monday to Friday between 4:45 am and 0:40 am, Saturdays from 5:05 am to 0:45 am and Sundays from 10:35 am to 8:40 pm.
At the BWI Marshall Station, linked to the terminal through a free shuttle, you can board Amtrak trains (Tel +1 800 872 7245) to Washington D.C., Philadelphia, Wilmington and Alexandria.
MARC trains (Tel +1 866 743 3682) travel from BWI Marshall Station to Washington D.C. (USD7.00), Baltimore (USD5.00), Prince Georges County, Anne Arundel County, Harford County and Cecil County. The shuttle leaves from outside the baggage reclaim area.

Taxi

Ranks are located outside the baggage reclaim area, near gates 5 and 13, and cabs have meters. The fare to downtown Baltimore is around USD35.00 (15-25 minutes) and to Washington is USD90.00 (45 min.)

Ride-sharing

Lyft and Uber pick their clients up at the terminal curbs, on the upper level.

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Shuttle Buses

Public bus services

RTA (Tel +1 800 270 9553) - Line 501/Silver costs USD2.00 and travels to Arundel Mills, Dorsey MARC Station, MD Food Center, Snowden Square and Columbia Mall, with a journey time of approximately 80 minutes.

MTA (Tel +1 410 539 5000) - Bus 75 travels to Parkway Center, Arundel Mills Mall and Patapsco Light Rail Station. Journey time is 40 min. and the ticket costs USD1.90. Route 107 runs on weekdays to UMBC, CCBC Catonsville and Old Court Metro Station. Line 201 operates Mondays through Fridays between 5:05 am and 11:05 pm and weekends from 9:05 am to 11:05 pm. It serves Gaithersburg Park & Ride, Shady Grove Station, Burtonsville and Arundel Mills Mall. Stops at the airport are located in Concourses A and E.

More information on public transport

While there are issues that seem more than obvious, it is always advisable to take into account when moving from or to the airport, and especially if you go on some public transport.  1- To the airport - It is convenient to go out with a little more anticipation than you would commonly suggest. If you choose a taxi or a private car service, always keep in mind peak transit times, demonstrations, strikes or events that may take more or less the trip to the airport from where you are. It is always good to be informed about what happens in the place where you find yourself.
If you have a shared transfer service, please have a contact Tel in case of any delay on the part of the company. In these cases, a scheduled collection schedule is already in tenter.
If you are using public transport (bus, train), have the schedules (weekends and holidays usually have fewer frequencies), if you have to transfer and also how to board (if you need a card or boarding pass or paying at the moment to the driver or rider). These are details that seem obvious, but it is advisable to know not to have surprises and suffer a delay that could bring complications.
If you rent a car to get to the airport check well, where you must leave the vehicles. In some airports, there is an exclusive parking lot for rental cars.  2 -From the airport- here is a little less stressful as you don't have the pressure to miss the flight. In the worst case you will arrive later to the place where you are going to stay or to the meeting point where you try to arrive. Once you get out of the plane, pick up your suitcase and finish with the required arrival procedures. Then you have to look for the public transport signs or consult the airport staff. It is very useful to inform the timetables of the buses in case you arrive late at night. Not all of them work 24 hours a day. The same goes for taxis. If you have hired a private car service, keep ready the mobile app to contact the driver. Some transport services hired, have a person waiting for you, identified with a sign.
If you rent a car to go from the airport to your final destination, for more peace of mind it is recommended to reserve it earlier. Rental counters are usually available at arrivals hall.