7 hours at DCA
 

I have a 7-hour overnight layover at DCA, too brief (and too cheap) for a hotel room. Is it possible to spend the night at the airport in reasonable comfort? Having done this in the splendor of Singapore and Schipol, I'm inclined to do this again...but US airports are a different story. Opinions?

While I can't speak from first-hand experience, I highly doubt that you'll even be allowed to stay on the grounds at all...

DCA is just about the last place that anyone would be allowed to "sack out" overnight.

I wish you the best of luck in your endeavors, but I would suggest looking into some lodging options.

You can get a room very near the airport at a Courtyard by Marriott or similar hotel for just $35-40 using Priceline. Get to/from on the hotel's shuttle van.

I've stayed at the Courtyard in Crystal City, across the highway from the airport, using Priceline twice this year. If I recall, I bid $29 and had $5 bonus money, which would be the equivalent to a $34 bid now (plus the $6 priceline fee). This is a 2.5* property. My most recent stay was about 3 weeks ago.