The pain Americans are facing at airports across the U.S. is expected to get worse this week if Congress is unable to reach a deal to reopen the federal government.

U.S. airlines cancelled more than 1,500 flights Saturday and more than 2,900 Sunday to comply with an Federal Aviation Administration (FAA) order to reduce traffic as some air traffic controllers, who have gone unpaid for nearly a month, have stopped showing up for work.

As of early Monday, airlines had already canceled nearly 1,600 flights for Monday and nearly 1,000 for Tuesday.

The Senate took a first step toward ending the shutdown Sunday, but final passage could still be several days away and experts have said it will take time for flights to go back to normal even after the government reopens. WATCH | Could the shutd

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