If what you are looking for is the utmost comfort and peace of mind when transferring from the airport to the Washington DC area, you can opt for a black car service.
The best option is to book online and in advance the transfer to or from the airport so you will have your own driver waiting for you and you don't have to negotiate prices with cabs or transfer companies. You can get from 118 USD a vehicle for 3 people. There are also 6-seater cars and minibuses for 10 passengers.
Reservations must be made at least 24 hours in advance and there is free cancellation up to 24 hours before. At the airport the driver will be waiting for you with a sign with your name on it, as soon as you leave the baggage claim area and enter the public arrivals hall. If you are in a hotel or apartment, the driver will be waiting outside the building. If you have the possibility to park your vehicle, sometimes you can wait for them at the reception.
What pick-up time do I have to indicate?
For airport transfers you must indicate the scheduled arrival time of your flight.
For transfers from the hotel you must indicate when you want us to pick you up. That is, you should not indicate the flight departure time, but the time you want to be picked up.
How long will the driver wait for us?
Normally they wait 1 hour from the actual landing time of the flight.
If for any reason the flight arrives late and you need more time, you should call the contact telephone number on the reservation. In this case, supplements may apply.