Webnov 16, 2021 · upgrade one day admission ticket to a season pass. 20830 views • nov 8, 2021 • knowledge. Webon behalf of all of us at six flags, we'd like to welcome you to the membership support portal. From here you can learn about and manage every element of your six flags. Webapr 18, 2021 · season pass holders and members must register their card in the guest portal first before they can start earning points. To register your card, please visit the. We realize that after a…