Bitstamp and Coinbase pro has no withdrawal fee for bitcoin.
If you want some trading exchange where you have more trading pairs then binance offers lowest possible withdraw fee for bitcoin which is $0.02 for a withdrawal.
indeed, binance is the best for withdrawal and also bitcoin exchange, yesterday I have felt it I think if transacting with btc will take a lot of ordinary, but after I try it myself and see the cost maybe this can be said to be very cheap for me personally, even though I don't so do withdrawals
