Nick Kyrgios and girlfriend Costeen Hatzi hold hands at Sydney Airport

Tennis star Nick Kyrgios and his girlfriend-of-four-months Costeen Hatzi have taken their blossoming romance to the skies. 

The couple were spotted arriving at Sydney Airport on Thursday ahead of their flight to Los Angeles, California.

Nick, 26, looked smitten as he strolled through the terminal with his 21-year-old ladylove.

Bon voyage! Tennis star Nick Kyrgios and his girlfriend-of-four-months Costeen Hatzi were spotted arriving at Sydney Airport on Thursday ahead of their flight to Los Angeles

Looking relaxed ahead of their long-haul flight, the pair were seen laughing as they approached a United Airlines check-in counter. 

Above the counter was a sign that read ‘United Premier 1K Status’, the most elite travelling status offered by the airline. 

Travellers with this status enjoy VIP services such as extra security, priority check-in and baggage handling, waived baggage fee and first-class upgrades.  

Love: Nick, 26, looked smitten as he strolled through the terminal with his 21-year-old ladylove

Love: Nick, 26, looked smitten as he strolled through the terminal with his 21-year-old ladylove

En route: Looking relaxed ahead of their long-haul flight, the pair were seen laughing as they approached a United Airlines check-in counter

Close: The couple held hands as they made their way towards a counter reserved for VIP travellers

En route: Looking relaxed ahead of their long-haul flight, the pair were seen laughing as they approached a United Airlines check-in counter

University graduate Costeen wore a baggy white T-shirt, black trackpants and a pair of white sneakers.

The tennis WAG styled her dark hair loosely and completed her low-key look with square-framed spectacles and a gold bangle.  

Nick, meanwhile, sported a grey tie-dye hoodie, black trackpants and Nike sneakers. 

Flying in style: Above the counter was a sign that read 'United Premier 1K Status', the most elite travelling status offered by the airline

Flying in style: Above the counter was a sign that read ‘United Premier 1K Status’, the most elite travelling status offered by the airline

Low-key: Costeen wore a baggy white T-shirt, black trackpants and a pair of white sneakers

Low-key: Costeen wore a baggy white T-shirt, black trackpants and a pair of white sneakers

Casual: Nick, meanwhile, sported a grey tie-dye hoodie, black trackpants and Nike sneakers

Casual: Nick, meanwhile, sported a grey tie-dye hoodie, black trackpants and Nike sneakers

At one stage, the couple were approached by a fan asking for a selfie. 

Nick, who is known for his fiery outbursts on the court, gracefully accepted the fan’s request. 

Moments before boarding their flight to America, the couple posed arm in arm for the assembled media.  

Gracious: At one stage, the couple were approached by a fan asking for a selfie. Nick, who is known for his fiery outbursts on the court, gracefully accepted the fan's request

Gracious: At one stage, the couple were approached by a fan asking for a selfie. Nick, who is known for his fiery outbursts on the court, gracefully accepted the fan’s request

Say cheese! Moments before boarding their flight to America, the couple posed arm in arm for the assembled media

Say cheese! Moments before boarding their flight to America, the couple posed arm in arm for the assembled media

The sighting comes after Nick shared an Instagram post describing his promising future with Costeen last month.

In his post, which was accompanied by a number of funny clips of Costeen, he wrote: ‘Can’t wait to go around the world with you.’

The former world No. 13 recently told Stellar magazine his relationship with Costeen is his ‘easiest’ one yet.

'Can't wait to go around the world with you': The sighting comes after Nick shared an Instagram post describing his promising future with Costeen last month

‘Can’t wait to go around the world with you’: The sighting comes after Nick shared an Instagram post describing his promising future with Costeen last month

‘Relationships are easy when both people are invested. It’s hard to move a couch on your own,’ he said.  

The Canberra-born tennis ace said his success has afforded him the privilege of having Costeen travel with him.

‘The luxury I have now in my career is that I’m able to provide for the person and if they want to travel with me they can,’ he said.

‘I’m in a very blessed situation that not many people are able to do. Hopefully everything works out but I don’t plan anything anymore.’ 

'Relationships are easy when both people are invested': The former world No. 13 recently told Stellar magazine his relationship with Costeen is his 'easiest' one yet

‘Relationships are easy when both people are invested’: The former world No. 13 recently told Stellar magazine his relationship with Costeen is his ‘easiest’ one yet

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