Carson Soucy scored for Seattle (1-2-1). Philipp Grubauer allowed five goals on 20 shots before he was replaced by Chris Driedger, who made six saves on seven shots.
"We had a really competitive start in the first 10 minutes," said Kraken coach Dave Hakstol, who was Flyers coach for four seasons (2015-19). "We did have a couple of good scoring chances, we had a good, competitive start. We gave up the first goal from 200 feet away, which was a little bit of a theme tonight. I believe four of their goals we got beat up ice on. After that we got back on our heels and we really didn't have a consistent push."
The Kraken play at the New Jersey Devils on Tuesday, the first time they will have back-to-back games. After playing three one-goal games to start the season, Soucy said the quick turnaround after the lopsided loss is a good thing.
"Our mind just switches to tomorrow night," he said. "Come out ready to play."
Konecny scored on the rebound of his own shot to make it 2-0 at 12:12, and Brassard made it 3-0 when his shot from the right corner went in off Soucy's left skate at 14:36.
It was Brassard's first goal with the Flyers. His line with Farabee and Cam Atkinson (one assist) combined for six points (two goals, four assists).
"We're just trying to help the team, we're working, we're trying to be on the same page," Brassard said. "Joel is all over the puck every time, same thing for Cam. They're both really hungry to get to the net and they're really talented. For me, it makes my job a lot easier. They're two special talents."
Ryan Ellis scored his first goal with Philadelphia to make it 4-0 at 7:10 of the second period, and Braun scored with a shot from the slot that trickled between Grubauer's pads at 8:49 for a 5-0 lead.