You'll also find that redeeming miles for flights on partner airlines is another option with these cards. (rewardexpert.com)
You end up paying between 1.4 and 1.1 cents per mile, which is not bad, and a respectable rate for redeeming miles for flights in the first place. (rewardexpert.com)
It's worth noting that when paying for a flight with points, you'll still need to pay some taxes and fees. (wisebread.com)