No. The Boarding Pass is not a subscription. It is a one-time seasonal purchase that lasts for the duration of the pass period.

When you unlock the Boarding Pass, you gain access to extra rewards such as boosters, coins, and exclusive items as you progress through levels and stages. Once the pass ends, you’ll have the option to purchase it again for the next season if you wish.

This means you will not be automatically charged every month. You only pay when you choose to buy the pass.