Caitlin Thwaites and NSW Swifts advance to ANZ Championship conference final.

The Swifts dominated large swathes of a high-quality and sometimes physical encounter to set up a meeting with the Queensland Firebirds.

Pettit (23 goals from 24 attempts) coolly netted the opening goal from long-range and the Swifts never looked back, storming to a 37-25 advantage at the midway point on Sunday.

Defending a five-match unbeaten run against the third-placed Vixens, and looking to overcome the disappointment of missing top spot on the ladder by a point, the Swifts intensity was clear from the outset.

The Vixens, who finished five points behind their rivals, pulled back from an early deficit to draw level during the first quarter but the home side proved to be fast and decisive in possession.

Thwaites scored 40 goals from 44 attempts.

She spent much of the second-half opposed to former Sanhurst netballer Chloe Watson, who wa splaying her first final for the Vixens.

The Vixens also displayed solid form at the net with their trio of Emma Ryde, Alice Teague-Neeld and Kimberly Commane missing just a handful of attempts between them.

The defeat ends the Vixens campaign with coach Simone McKinnis content with the showing of her relatively inexperienced side.

"We were beaten by the better team," she said.

"We were outplayed and on the back foot at times, but we did some good things and we will focus on those.

"We just weren't consistent enough, but in terms of individuals we had some good performances.

"It was a solid year, but a hard year and we gave ourselves the best chance of getting into the finals, but we just weren't up to it today."

The Swifts will now have another opportunity to put last year's grand final heartbreak behind them when they visit the defending champions on Monday 18 July.

However, coach Rob Wright refused to get carried away with a near-record finals win over a side missing two key players, and further hampered by the loss of star import Geva Mentor mid-match.

"I thought our first three quarters were solid and we kept building, but they had players out so I felt that (result) is what it should have been," said Wright.

"It was a good intense battle, the intensity always ramps up in finals and I think we saw that today."