The Red Devils needed extra-time at Wembley as they came from a goal down to beat the Eagles 2-1 and secure their first trophy since Sir Alex Ferguson's retirement back in 2013.
De Gea has played a vital role in United's success this season and has been a regular fixture between the posts for Louis van Gaal's men.
And the Spain goalkeeper looked to be thrilled as he posed for a snap with his new trophy on the coach back to Manchester.
De Gea posted the picture above on his personal Instagram account on Sunday afternoon and wrote: "You're finally mine!! I'm taking you home! @manchesterunited #WeAreUnited"
United ended up missing out on a spot in next season's Champions League after they were forced to settle for a fifth-placed finish in the Premier League behind Manchester City.
