Brian Windhorst says that Isaiah Thomas plans to travel to Washington and attend his sister, Chyna Thomas', funeral after Game 6 against the Bulls. (0:45)

CHICAGO -- Boston Celtics point guard Isaiah Thomas was expected to travel home to Tacoma, Washington, after Friday's Game 6 against the Chicago Bulls to attend his sister's funeral.

Thomas' cousin, Johari Thomas, confirmed to The Associated Press that the Celtics star would fly to Tacoma for the funeral after the game -- a series-clinching 105-83 Celtics win.

Chyna Thomas died following a single-vehicle accident April 15. As family and friends gathered Thursday for the first of two nights of viewing, Thomas traveled with the Celtics to Chicago, where he played in Friday's Game 6.

Isaiah Thomas and the Celtics, who lead the Bulls 3-2, can clinch the best-of-seven series with a victory Friday night. Mike DiNovo/USA Today Sports

Celtics coach Brad Stevens previously noted he'd like to give teammates the opportunity to attend the funeral for Thomas' sister if the schedule allowed. The Celtics organization will be represented at the funeral, a source told ESPN.

Teammate Avery Bradley said before Friday's game in Chicago that he, too, was planning to attend the funeral. That hinged on the flight options and whether the Celtics were playing on Sunday.

"If I'm not able to be there I'm going to make sure I'm supporting him however I can to let him know I'm here for him during this time," Bradley said.

Throughout Boston's first-round series, Stevens has praised the way his team has rallied around Thomas in his time of grief and marveled at how Thomas has managed to play despite the circumstances.

Thomas has requested no questions about his sister during his media sessions this week but has noted that he's still reeling from the loss.

"Man, I'm just taking it day by day. Some days are better than others," Thomas said Tuesday. "I'm not here, man. It's never going to be the same."

Stevens called it "unfathomable" that Thomas has played so well under the circumstances. Before Wednesday's Game 5, Stevens said Thomas' situation has given the team perspective.

Said Stevens: "Sometimes you realize this is just a game."

Information from The Associated Press was used in this report.