-
If you redeem airline miles directly from the airline, you won’t earn any additional miles.
For example, if you used United miles to purchase a United award ticket, then NO you don’t earn any more miles on that ticket.
If you use credit card points like Chase or Capital One and purchase an award ticket via their travel portal, then you should earn miles for those tickets.
If you transferred your Chase or Capital One points to the airline and then redeemed the miles for an award ticket, you wouldn’t get any additional miles.