Thank you both.
Which one of those has the lowest fees? (sometimes it is hard to find since they have a "hidden" fee with a crappy exchange rate)
I found an old reference of exchanges that support Bitcoin LN,
https://lightningnetworkstores.com/?tags=exchangeat least the cheapest exchange fee right now is if you can successfully trade BTC><LTC on the spot market. LTC withdrawals, generally only 0.001LTC. But I suggest you find out the KYC preferences first for each exchange.