The average train between Union Station and Old Post Office takes 12 min and the fastest train takes 10 min. The train runs at least 6 times per hour from Union Station to Old Post Office. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 10 minutes between Union Station and Old Post Office. The earliest departure is at 7:12 AM in the morning, and the last departure from Union Station is at 2:42 PM which arrives into Old Post Office at 2:52 PM. All services require a transfer at Metro Center, Blue/Orange/Silver Line Center Platform and take an average of 12 min. The schedules shown below are for the next available departures.

15 min • 1 change

15 min • 1 change

15 min • 1 change

13 min • 1 change
Want to know about travelling from Union Station to Old Post Office? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Union Station to Old Post Office. However, there are services departing from Union Station station and arriving at Old Post Office station via Metro Center, Red Line Track 2 Platform. The journey, including transfers, takes approximately 12 min.
Union Station to Old Post Office train services, operated by Washington Metropolitan Area Transit Authority, depart from Union Station, Red Line Center Platform.
Union Station to Old Post Office train services, operated by Washington Metropolitan Area Transit Authority, arrive at Metro Center, Red Line Track 2 Platform station.
The distance between Union Station and Old Post Office is 1.9 km. The road distance is 3 km.
Washington Metropolitan Area Transit Authority operates a subway from Union Station, Red Line Center Platform to Metro Center, Red Line Track 2 Platform every 10 minutes. Tickets cost $2–3 and the journey takes 5 min.