I am 1 year into a 3 year car lease. I have made every payment on time, and I have good credit. I want to end my lease early, but how do I know what it will cost me? Do I have to pay every remaining payment? or is there a smaller fee to just turn the car in?

look over the contract and see if there's a section where you can do that..

You can terminate early but it'll cost you an arm and a leg... usually the entire remaining payments. Just sell your contract at http://www.swapalease.com or http://www.leasetrader.com

There are a few ways out of a lease, but the bottom line is: unless somebody takes over the contract, you are responsible for all remaining payments. Dealers can hide the extent of the damage by using rebates and discounts, but you would have gotten them anyway. The only real cost effective way is http://www.swapalease.com and hope someone will take over your contract, so you can start from 0.

Do not end your lease early, it will cost you a lot of money and it will not be worth it. If you really need to end it, go to leastrader.com and you get somebody to take over your lease.