Holiday travel is breaking records, with the TSA screening nearly 3.1 million passengers on Dec. 1, the busiest day in its history. Meanwhile, airlines are rolling out significant changes.

In-flight service, such as the sale of food and beverages, will soon end ten minutes earlier on Southwest flights.

The carrier — the largest by passenger traffic at San Antonio International Airport and Austin-Bergstrom International Airport — is ending cabin service earlier on all flights, requiring passengers to do the usual pre-landing procedures such as ensuring seatbelts are fastened and returning their seats to an upright position earlier in the flight.

Starting 4, Southwest Airlines is making a small yet noticeable adjustment to its inflight experience. Cabin preparations for landing will start at 18,000 feet instead of the prior 10,000 feet. That’ll correlate with a 10-minute sooner request to raise tray tables,

Fliers on Southwest Airlines might notice a change to the usual cabin service this week. Starting Wednesday, Southwest Airlines flight attendants will prepare the cabin for landing at an altitude of 18,

Beginning on Dec. 4, a company spokesperson said, flight attendants will begin preparing the cabin for landing at an altitude of 18,000 feet (5,486 meters) instead of 10,000 feet (3,048 meters).

A big change is coming to Southwest Airlines' snack and drink service this week. The airline says it is ending cabin service earlier on flights, requiring passengers to do the usual pre-landing procedures such as ensuring their seatbelts are fastened and returning their seats to an upright position earlier than before.