Holiday travel nightmare at LAX

Jetliners line up to park at gates in Terminal 1 at LAX on Thursday.

A traveler pauses beside a Southwest Airlines sign board showing dozens of flights to be delayed at LAX on Thursday.

A TSA agent guides holiday travelers through a security checkpoint in Terminal 2 at LAX on Thursday, one of the busiest travel days of the year.

Travelers make their way through a crowded Tom Bradley International Terminal at LAX on Thursday.

Holiday travelers line up for security screenings in Terminal 7 at LAX on Thursday.

Crowds jam security screening lines in Terminal 5 at LAX after unattended baggage was found in a restroom on Wednesday.

A police canine team sweeps through Terminal 5 at Los Angeles International Airport. Police responded to the discovery of several suspicious packages in three separate terminals on Wednesday.

Traffic outside Terminal 5 at LAX backs up after unattended baggage was found in a restroom on Wednesday.

Security screening lines in Terminal 5 at LAX back up after unattended baggage was found in a restroom on Wednesday.

A heavily armed police officer stands guard at Los Angeles International Airport, where security personnel responded to the discovery of several suspicious paackages on Wednesday.