Call the dealer and ask what the payoff is. We always turn our leases in a month or so early.

OP, I read on the cars subreddit that people have had success getting CarMax to buy out their leases with no obligation to buy another car, so check there.

Also, there are people who need to rent or lease cars for very short periods (2-6 months), so you can also look into listing your car on Swapalease or Leastrader. Good luck!