Update 4/14/14: US Airways has increased the price of its awards to North Asia in business class to 110k miles roundtrip.

In December, I compiled Comparison Tables of United, Delta, US Airways, and American Airlines Award Charts to show which program had the cheapest awards in each cabin to every country you want to visit.

With Delta announcing a new award chart that takes effect for awards booked January 1, 2015, I have updated the tables for economy and business class.

There are a few ways to use these charts.

Figure out which miles to earn for your next big