Yellow line from Washington DC Airport?

Even if the Yellow Line does not go directly to The Mall (near the National Gallery of Art), you can find maps at every Metro (subway) stop that will show you WHERE you can TRANSFER to another train to reach your destination.

TRANSFERS from one train to another are quite simple.

First, DCA (Reagan National) is not the only airport serving Washington, DC. Make sure your flight is going to DCA and not to BWI (Baltimore Washington International) or Dulles (IAD).

The subway does not stop right at the National Gallery of Art.

If you can walk at least 3 blocks, then take the subway yellow line to Archives-Navy Memorial Station and walk south on 7th Street. The National Gallery of Art will be on your left immediately after you cross Constitution Avenue. Google says it's 0.3 miles and takes about 5 minutes.

If you can't walk more than a block or so, there are bus stops that are closer. You will want to either take the X1 bus to Constitution Avenue and 6th Street or take any of several buses that stop on 4th Street between Madison Drive and Pennsylvania Avenue. However, I'm not sure how to get from the airport to those bus lines.

It is a Metrorail.

https://www.flyreagan.com/dca/metrorail-station

https://www.wmata.com/schedules/trip-planner/#main...

FROM Ronald Reagan National Airport (DCA)TO National Gallery of Art

Is a 12 minute Yellow Line $2.55 Fare

Here is the trip planner.

https://wmata.com/schedules/trip-planner/trip-plan...

Well, are you colour blind, because I can see it with no problem.

The DC Metro Yellow Line stops at Reagan Airport, and the stop closest to the National Gallery of Art is the Archives-Navy Memorial-Penn Quarter. Five stops.

I googled "Yellow line from Washington DC Airport: and immediately found a map of the yellow BUS line.