This year’s Thanksgiving travel looks like it’s going to be messy this year, with a Nor’easter bearing down on the, well, Northeast. If you’re flying for Thanksgiving, be sure to pack extra patience and perhaps take advantage of your airline’s travel waivers.

Here are the travel waivers for the major U.S. airlines:

American Airlines
Reservations: 1-800-433-7300
Twitter: @AmericanAir

Delta
Reservations: 1-800-221-1212

JetBlue
Reservations: 1-800-JETBLUE (538-2583)
Twitter: @JetBlue

Southwest
Reservations: 1-800-435-9792
Twitter: @SouthwestAir

United
Reservations: 1-800-864-8331
Twitter: @United

US Airways
Reservations: 1-800-428-4322
Twitter: @USAirways

If you do get into a jam at the airport, call your airline’s reservations line as soon as you can. You can also tweet to your airline and possibly get a faster response—although some airlines are much better than others.