Fans who want to return their tickets for EURO 2020 can return them until Thursday, April 22. In the case of tickets for Bilbao, Münich and Dublin, the deadline is extended until Monday, April 26.
Once the attendance quotas for each of the stadiums of the twelve host cities and the sanitary measures of each country were known, UEFA announced on its website to the fans the information they should know to be able to attend the stadiums during the next month of June. Likewise, UEFA indicated the procedures and deadlines for the return of tickets.
If you want more information check UEFA’s official website.