0126_seal_rameySeal‘s finally left Heidi Klum — he flew out of the country last night … and did it with a you-know-what eatin’ grin on his face.

The singer wasn’t looking like a guy whose wife is divorcing him as he boarded a flight to her native country of Germany — smiling for the cameras waiting outside LAX.

By the way, Seal was still wearing his wedding ring.

Right before heading to the airport … Seal fueled ridiculous speculation his split from Heidi is a PR stunt to pump up record sales by performing on Jimmy Kimmel Live.

He sang … “I’ll Be Around.”