It's worth noting that when paying for a flight with points, you'll still need to pay some taxes and fees. (wisebread.com)
Whenever you use your Membership Rewards points to pay for a flight using «Membership Rewards ® Pay with Points», you will receive 35 % of your points back. (valuepenguin.com)
Only want to use points or miles for upgrades or pay for flights on long haul flights. (johnnyjet.com)