The Little League World Series champs just visited the White House ... and got the best ride back home ever -- A FLIGHT ON AIR FORCE ONE WITH THE PRESIDENT!!!
The 12-year-olds won the Little League WS back in August ... and shortly after the game, Donald Trump tweeted he'd love to host them for a title celebration at 1600 Penn.
So, the kids took him up on that offer Friday ... and got the coolest reward -- a private flight back home on Trump's plane!!!
Trump was headed to Louisiana this weekend anyway -- No.