Originally Posted by
gailwynand
I'm surprised that UA has better fares on DCA-ORD than IAD-ORD. Is the DCA-ORD on an RJ?
DCA-ORD is almost all mainline. Usually a combo of 319, 320, 73x, and 752. I think the 6am on weekdays in an E70. Service is pretty much hourly.
As for the OP's question, there's no way I would chance only 3 hours when clearing customs and dealing with NoVa traffic.