Can You Upgrade with Miles After Buying a Cheap Flight?
It's a constant question among travelers: "Can I upgrade the cheap flight I bought with miles?" And it's a nice thought - who wouldn't want to buy a cheaper fare, then burn some miles to fly business class instead of sitting back in economy? As with many things in the world of travel and points and miles, there's not a black-and-white answer. But if there's a short answer, here it is: It rarely ma...
