Travellers at St. John's International Airport in a photo from 2010. ((CBC))

The St. John's International Airport is set to launch a $150 million expansion plan officials say is necessary to accommodate growing passenger traffic.

Airport chairman Fraser Edison said the first phase of the ten-year plan will focus on expanding the east wing of the airport.

"[We're going to build] a better area to put in a [full body] scanner for example that has taken up a lot of conversations these days. As well, we need to look at the parking facilities outside," he said.

Airport authorities are considering plans to build a multi-level parking garage, but that won't happen until phase two starts in 2016.

Customers will be paying for the upgrades though an airport improvement fee.

The fee will increase from $15 to $20 on April 1.