Albrighton joined the Foxes from Aston Villa in the summer of 2014 and has made 253 appearances for the club across all competitions.
The 31-year-old was part of the Leicester City side that won the Premier League title under Claudio Ranieri in the 2015/2016 and holds the distinction of scoring the club’s first ever UEFA Champions League goal.
Last season Albrighton added to his trophy collection at the King Power Stadium as Leicester defeated Chelsea 1-0 to win their first ever FA Cup.
"I'm delighted, it’s obviously a club that's progressing every single year," he told LCFC TV. "It's a fantastic a club, the people here, where the Club’s going, the direction that they’re going in, it's great to be a part of.
"It's a club that I've really settled into. I’ve got a good relationship with the fans. The people here are great. Whether it's the staff around the training ground, the stadium or the players, the management, coaching staff, I just really enjoy coming to work every day at the training ground.
"I like coming in and working hard and feeling like I've done something in that day and, to be doing it at the level that we are competing, is a dream for me.
"Obviously, I have always been the type of person and player that wants to establish himself at a club and stay there instead of flitting between different clubs and travelling to different places. I've settled in here so it's great and I'm really enjoying it."