I'm flying out on July 4th (going to Armenia and then Russia; flying out of Philadelphia would have cost me a minimum of $400 more) and I haven't used IAD before. It looks like the most practical public transportation route uses Amtrak, the Orange Line, and then an airport bus; is this correct? And would the New Carrollton station be the best place to connect with the Metro?
I was wondering about Megabus, as one option, but wasn't sure where it stops in connection with getting on the Metro to hook up with the airport bus.
Also, anything I should be aware of with traveling in Washington on the 4th? The flight leaves at 2:45PM, so it'll be an early train or bus out of Philadelphia, I'm thinking. :)
I posted this here as I figured Philadelphians would have more specific instructions than Washingtonians in this instance.
Thanks for any info or hints!