One Blood , One Love , One Tribe. Defqon.1 2019 Ticket sale starts March 23 (13:00 CET). Defqon.1 2019 Travel Stay sale starts March 16 (13:00 CET) at travel.defqon1.com. For more information about Defqon.1 2019 , head over to bit.lyDQ19-Website. This year , Defqon.1 Weekend Festival will take place from June 28 till June 30. Discover the artists that are part of our tribe. Check out the Defqon.1 2019 line-up now at bit.lyDQ19-Line-up. Defqon.1 is the world's biggest harder styles festival. With over 85.000 unique visitors and spectacular shows as POWER HOUR and The Endshow , Defqon.1 serves as the ultimate sanctuary for those with an orange heart. More Info below.