The pair are amongst three Tottenham stars heading to France with the Red Devils.
Though winger Nacer Chadli was left out by head coach Marc Wilmots, Spurs fans will be able to see defensive pair Jan Vertonghen and Toby Alderweireld as well as midfield star Mousa Dembele in action for the Red Devils this month.
After the England squad flew out on Monday it was the turn of the Belgian squad to make the journey on Tuesday ahead of next Monday's opener against Italy.
Alderweireld, arguably Spurs' best player in their superb domestic season, shared a photo of the Belgian squad on their private plane on Tuesday afternoon, while Dembele posted a selfie of a group of players including club teammate Vertonghen.
Alderweireld, Dembele, and Vertonghen all had stellar individual campaigns for Mauricio Pochettino's side this season, making 117 appearances between them in all competitions at club level.
Alongside the Belgian trio, Harry Kane, Dele Alli, Eric Dier, Kyle Walker, and Danny Rose will play some part for England, while Ben Davies, Hugo Lloris, and Kevin Wimmer will turn out for Wales, France, and Austria respectively.