The Calgary International Airport is advising travellers to check its website following this morning's shooting at the Los Angeles International Airport.

"WestJet representatives are working hard to connect with affected guests in order to assist where needed," said airline spokesperson Steve Niles.

A gunman armed with a semi-automatic rifle opened fire at LAX killing a Transportation Security Administration (TSA) employee and wounding three other people.

The shooter was taken into custody after exchanging gunfire with police.

As a result, the Calgary airport expects some flights in and out of the U.S. will be delayed.

Niles said Westjet flight WS1510 from Calgary to L.A. is being diverted to San Diego. Several other L.A. flights have already been cancelled.