Kaia Gerber, 20, and boyfriend Austin Butler, 30, opt for casual ensembles as they catch a flight out of New York City

They love travelling around the world.

And 20-year-old Kaia Gerber and Austin Butler, 30, were off again as they checked out of their New York hotel and headed for the airport on Thursday.

The pair both kept a low profile as they hauled bags outside of their hotel and into the terminal, shielding their faces with sunglasses and masks.

Kaia donned an all-black ensemble, looking chic in a longline coat and trousers as she hung a black cross-body bag across her hip.

The model kept comfortable in trainers, carrying a second handbag as they headed for the airport, with her brunette tresses left to flow freely.

Meanwhile, actor Austin sported a casual look with a pair of blue Adidas joggers with a The Velvet Underground lyric jumper - lowering his head underneath the hood. 

He wrapped up in a navy Carhartt coat with a pair of heavy brown boots as he clutched onto his black backpack, covering his face with a paisley print mask.

The pair have been spotted in New York throughout the past few days, showing their travelling certainly hasn't calmed down after the recent city-hopping of Fashion Week.

Kaia and Austin were first seen together since last December, with the couple being inseparable ever since.

The relationship came just one month after Kaia, who is daughter to supermodel Cindy Crawford, ended her prior 13-month relationship with Euphoria star Jacob Elordi.

While it was the first relationship Austin had since ending his long-time romance with actress Vanessa Hudgens, after eight years. 

Kaia's recent gigs include being on the cover of Vogue China and walking the Off-White FW/22 runway presentation in Paris alongside her famous mother.

Meanwhile, Austin is set to play The King in Baz Luhrmann's biopic Elvis, which is scheduled to premiere on June 24.