Sebastian Aho gave the Islanders a 1-0 lead at 4:56 of the second period on a delayed penalty with a wrist shot from the right circle. He has two goals in his past four games after not scoring in the first 27.
Barkov tied it 1-1 at 14:12 with a power-play goal on a wrist shot from the high slot through traffic.
The Islanders were playing at home for the first time since Hall of Fame forward Mike Bossy died Friday. They honored him with a pregame ceremony.
"We had some away games where they did some nice tributes like he deserves it," Pageau said. "Tonight, in his home in New York, I thought they did an awesome job. It was emotional for the players, for the fans, like he deserves it."
NOTES: The Panthers winning streak is the longest in the NHL this season. The Calgary Flames, Avalanche and Pittsburgh Penguins each had 10-game streaks. Florida's record for consecutive wins is 12, from Dec. 15, 2015-Jan. 10, 2016. … The Panthers won a team-record 23rd road game. They won 22 in 2015-16. … Florida swept its season series against the Islanders for the first time since 2007-08. … Barkov has 21 points (nine goals, 12 assists) in the past 11 games. … Huberdeau has 25 points (eight goals, 17 assists) in the past 16 games. … Panthers forward Sam Reinhart had his six-game point streak end (11 points; four goals, seven assists). … Islanders defenseman Andy Greene had an assist, his first point since March 3 (22 games).