You can easily do change your flight tickets. The airline provides you the facility of Easyjet Date change, your date can be changed in a snap of a finger. For making date change in the flight tickets you have to pay the fare difference and the change fee to proceed forward to the Process. Free changes can be done only once but if you want to change twice or thrice time then you have to pay for it.

https://airlinespolicy.com/flight-change-policy/easyjet-flight-change-policy/