DETROIT — Another game, another third-period lead, another loss. 

At this point, what else can you expect from the Islanders, who just magicked what should have been a terrific road trip into three losses on the bounce? 

Thursday’s 2-1 defeat to the Red Wings, courtesy of Lucas Raymond’s winner with under a minute left, felt like watching another cut of Tuesday’s loss against the Flames, if the director had asked for a bigger punch to the gut. 

It left the Islanders at 7-8-5 at the quarter mark of the season, having allowed as many tying or go-ahead goals in the final five minutes of the third as they have actual victories. 

“It sucks for Ilya [Sorokin],” Jean-Gabriel Pageau told The Post. “He was solid for us the whole game, and we gave up those chances. So it’s disappointing right now.” 

On Thursday, like Tuesday, the Islanders played a low-event game and ceded possession of the puck for most of the night but had a 1-0 lead and looked in control for two periods before letting go of the rope in the third. 

Including Saturday’s loss to the Kraken, in which the Isles took a 2-1 lead in the third and almost immediately allowed a tying goal, they have let three straight wins out of their grasp to finish their longest road trip of the season.

That is a recipe for a quiet plane ride home and what feels like an inflection point before Thanksgiving. 

“I don’t know what to say,” Sorokin said after stopping 29 shots. “Last five minutes, two big goals, that’s it.” 

The penalty kill, one of the Islanders’ fatal flaws for most of the season, was excellent for the first two periods Thursday.

They killed three chances at four-on-five against a Red Wings team that came in ranked second in the league on the power play, with Sorokin sharp in net and the PK unit doing a good job in front of him. 

Still, for the second consecutive game, they couldn’t build on a 1-0 lead after Simon Holmstrom scored 5:51 into the night by tipping in Scott Mayfield’s shot from the top of the zone. 

So into the third period it went, with the same old vibe everyone has gotten used to over the past 13 months. 

The Islanders, after having invited pressure in the same situation against Calgary to their detriment, did so again against the Red Wings.

It looked as though Sorokin’s heroics might be enough to bail them out until the 15:14 mark of the third when Jonatan Berggren scored off a breakaway to tie the game at 1-1 after Alexander Romanov’s stick broke. 

Unlike in Calgary, the Islanders wouldn’t even make it to overtime. 

Raymond picked up a puck after the Red Wings won a battle on the wall and lashed it into the net with 51 seconds left in regulation, handing Detroit a 2-1 lead that would become a win in short order. 

“Calgary was the penalty killing, scored on their power play. Tonight was a broken stick,” coach Patrick Roy said. “It seems like there’s something different every night. But I’ll say this: We had our chance to score a goal that would hurt them, and we just didn’t do it, so it’s a mix of all that.” 

The Islanders, who still are missing four regulars from their lineup, proved over the past 12 days in the Northwest and Detroit that they still are capable of winning games without some of their best players. 

What they did not do was capitalize on that capability. 

A 5-2 scoring outburst in Vancouver — the lone game of the trip in which the Isles built on a lead — was their only win of the five-game swing, despite the Isles having a chance to win all five. 

That is unacceptable, even for a team playing hurt, even with a tough schedule, even on a long road trip. 

It’s not as if they’re out of the playoff chase — far from it in an Eastern Conference filled with mediocre to bad teams. 

But the Islanders could have put themselves well atop that pile over the past couple of weeks and generated some real momentum in the standings. 

Instead, they are right back into the mediocre muck.