Jason Sudeikis confirms he's "definitely done" with Saturday Night Live (VIDEO)

Jason Sudeikis confirmed what has been suspected since an emotional season finale in May — he's not coming back to Saturday Night Live.

"I'm definitely done," he told David Letterman in a pre-taped interview for Wednesday night's 'Late Show.'

"I'm gonna leave. Yeah, I’m not coming back next fall."

Sudeikis, 37, has been with the show since 2003. He spent two years behind the camera as a writer before joining the cast in 2005.

He reportedly wanted to leave in 2012 but was persuaded by SNL producer Lorne Michaels to stay through the season to play US Republican presidential candidate Mitt Romney.

Sudeikis, who is currently starring in the movie We're the Millers, told Letterman that his leaving isn't "weird" because the show is currently on break — but he suspects that by August, "you start to get that itch."

"All these sketch ideas will show up," he predicted. "I'll be like, 'Well, can I make this sketch idea last 90 minutes and turn it into a movie?!' Probably not,'" he said joking about the SNL habit of turning sketches into films. (See: Blues Brothers, Wayne's World, Night at the Roxbury, The Ladies Man, It's Pat: The Movie, Superstar, etc.)

Sudeikis' departure will leave another large hole for NBC executives to fill. The show's other top talent — Bill Hader, Fred Armisen — won't be back for season 39. 

Head writer and Weekend Update anchor Seth Meyers will also be leaving at the end of the year to take over for 'Late Night' host Jimmy Fallon, who is moving over to fill Jay Leno's shoes on the 'Tonight Show.'

Fan-favorites Kristen Wiig and Andy Samberg also left the show in 2012 to focus on their film careers.

More from GlobalPost: Pakistan bans 'immoral' condom ad from TV (VIDEO)