The lease expiration schedule for the 53 leased A319/320s is public information as the company has previously disclosed it in investor presentations:

2019 1
2020 2
2021 9
2022 14
2023 18
2024 6
2025 3

The 10 A321NEOs are all on 12 year leases from GECAS with expirations 2029-2031. The 10 newest A320s are owned so they could be sold at any time.

Cheers - Rob.