The Golden State Warriors progressed to their sixth NBA Finals appearance since 2015, defeating the Dallas Mavericks 120-110 on Thursday for a 4-1 series victory.

The Warriors moved to a 21-2 playoff-series record since Steve Kerr took over as coach in 2014, only losing to the Cleveland Cavaliers and Toronto Raptors in respective finals.

Klay Thompson came up big for the Warriors, shooting an even 50 per cent from beyond the arc for a team-high 32 points.

Kevon Looney was again a critical figure for the Dubs, finishing with a double-double of 10 points and 18 rebounds including seven on the offensive glass.

His effort on the glass directly contributed to the Warriors' 17 second-chance points while he gave the team defensive flexibility and freedom to switch.

The Mavericks started Game 5 in disappointing fashion, with Luka Doncic held to six points on two-of-12 shooting while committing four turnovers.

The 23-year-old took over as the Mavs mounted a brave fightback, though, scoring 15 points in the third quarter and getting the margin back to single-digits.

Stephen Curry suffered an early injury scare, rolling his ankle in the first quarter when attempting to trap Dorian Finney-Smith. After icing the ankle, Curry returned to finish with 11 points on five-of-17 shooting from the floor and nine assists over 35 minutes.

Averaging 26 points, 7.5 rebounds and seven assists while shooting 47.1 per cent from beyond the arc coming into Game 5, Curry was the first recipient of the award for Western Conference Finals MVP.

The Warriors will face the winner of the Eastern Conference Finals series between the Miami Heat and Boston Celtics.