Colombian Arango scored the go-ahead goal for the second straight game on Sunday in LAFC's 3-0 victory over Austin FC in the western conference final.

LAFC - who won the Supporters Shield as the top team in the regular season - will host the Philadelphia Union, who beat NYCFC 3-1 in the eastern conference final, on Saturday.

LAFC have won 11 of their last 12 matches (including the postseason) at home.

It is the first time since Toronto in 2017 that the Supporters Shield winners have reached the MLS championship game.

"Our guys did an emphatic job," LAFC coach Steve Cherundolo said. "That was the best I have seen implementing our match play from the beginning to the end. I'm very proud of the guys, but what I experienced in the locker room was hunger and a want for more."

Arango headed in a crossing pass from Carlos Vela on a corner kick in the 29th minute to put LAFC on top.

The forward has scored in 26 of the 52 MLS games he has played since making his debut in August of last season. He is an MVP finalist after scoring 30 regular-season goals.

In the second half, Maximiliano Urruti scored an own goal and substitute Kwadwo Opoku added a score in the late stages.

After Urruti's own goal in the 62nd minute, Opoku took advantage of a turnover and put a left-footed shot past Austin goalkeeper Brad Stuver.

"A lot of credit goes to LAFC, they made it difficult for us," Austin coach Josh Wolff said. "They've been the best team the entire year and this was another example of that. They didn't give us a chance to breathe or build up."

Australian Associated Press