The last flights out of the three major Washington-area airports left around 9 a.m. Monday as airlines prepared for fierce winds and rain from Hurricane Sandy.
Southwest and AirTran flights out of Baltimore Washington International Airport were also canceled for Tuesday.
Dulles International, Reagan National and BWI airports remain open, but there are no flights coming in or going out for the time being, spokesmen for the airports said.
"The airlines canceled the vast majority of their flights today at BWI Marshall. There were a handful of flights this morning," said BWI spokesman Jonathan Dean.
Airlines aren't even keeping their planes at Washington area airports. They flew them to other areas to protect them from the storm, said Reagan and Dulles spokesman Rob Yingling.
Throughout Monday airlines will decide whether to cancel flights for Tuesday and Wednesday, airports officials said.
"We do expect to see a number of cancellations tomorrow," Dean said Monday.