FlyerTalk Forums - View Single Post - BWI/DCA Co-Terminals? Possible to Standby Out of DCA vs BWI? Flight back?
Old Aug 12, 2008, 2:22 pm
  #9  
cova
 
Join Date: Oct 2003
Location: DCA
Programs: UA LT 1K, AA EXP, Bonvoy LT Titan, Avis PC, Hilton Gold
Posts: 9,647
DCA and BWI are not co-terminals. The fares vary significantly, and sometimes DCA can even be cheaper. DCA/IAD are more related.

DCA and BWI are considered different airports. They may show on some websites as alternative airport, but that does not mean they are interchangeable.

For the past couple of years I have not needed to fly out of BWI - as the DCA fares have been nearly as good or in some cases better than BWI. Although right now with Southwest fare sales, BWI is cheaper.
cova is offline