I am at dfw Admirals club C as I type this. Things are oddly quiet here. Looking at the board, the closest you can get to the east coast is Pittsburgh. I was scheduled to fly dfw-lga this am and am instead, thankfully heading home.
At the hotel last night there were a number of New Yorkers in town for a trade show who are stuck for the duration. I would venture to guess that it will take at least a couple of days of flying full schedules to get people where they need to be. As to brp, not sure the city is the place to be next weekend. I just booked stl-lga for next Monday with a Tuesday return for 25k miles.