This post is part of a four-part series. In Part 1, we looked at the mechanics of the Delta Airlines program. In Part 2, we looked at its award chart and rules to find valuable awards. In Part 3, we valued specific SkyMiles awards. In Part 4, I’ll put a number on one SkyMile.

In this post, I’ll explain why I value one SkyMile at 1.22 cents, but your value will be different. To start I’ll go back to the values for the redemptions I found in Part 3.

US Airways and American Airlines have merged since the publication of this post so it is no longer valid.

Nine minutes ago, I received an email from US Airways saying that I was targeted to buy Dividend Miles with a 90% bonus from now through May 15. Check to see if you have the email.

Clicking the link to Buy Miles in the email, I was brought to a purchase screen where the bonus miles were automatically included. The normal US Air price for miles is $37.63 per 1,000 or 3.7625 cents per mile.

This post is part of a four-part series. In Part 1, we looked at the mechanics of the United Mileage Plus program. In Part 2, we looked at the chart and rules to find valuable awards. In Part 3, we valued specific Mileage Plus awards. In Part 4, I’ll put a number on one Mileage Plus mile.

In this post, I’ll explain why I value one United Mileage Plus mile at 1.81 cents, but your value will be different. To start I’ll go back to the values for the redemptions I found in Part 3.

This post is part of a four-part series. In Part 1, we looked at the mechanics of the United Mileage Plus program. In Part 2, we looked at the chart and rules to find valuable awards. In Part 3, we’ll value specific Mileage Plus awards. In Part 4, I’ll put a number on one Mileage Plus mile.

Now that we've looked at the rules of the Mileage Plus program, and we've looked at the chart to find some valuable awards, we're going to value specific awards.

This post is part of a four-part series. In Part 1, we looked at the mechanics of the United Mileage Plus program. In Part 2, we’ll look at the chart to and rules to find valuable awards. In Part 3, we’ll value specific Mileage Plus awards. In Part 4, I’ll put a number on one Mileage Plus mile.

In this post, I'll detail what I think are some of the best Mileage Plus awards from North America.

This post is part of a four-part series. In Part 1, we will look at the mechanics of the United Mileage Plus program. In Part 2, we'll look at the chart and rules to find valuable awards. In Part 3, we’ll value specific Mileage Plus awards. In Part 4, I’ll put a number on one Mileage Plus mile.

United miles have a reputation among mileage collectors for being the most valuable mileage currency around.

This post is part of a four-part series. In Part 1, we looked at the mechanics of the AAdvantage program. In Part 2, we looked at the mechanics of a stopover, including how to use them to get free oneway trips within North America. In Part 3, we valued specific AAdvantage awards. In Part 4, I’ll put a number on one AAdvantage mile.

In this post, I'll explain why I value one AAdvantage mile at 1.77 cents per mile, but your value will be different.

This post is part of a four-part series. In Part 1, we looked at the mechanics of the AAdvantage program. In Part 2, we’ll look at the mechanics of a stopover, including how to use them to get free oneway trips within North America. In Part 3, we’ll value specific AAdvantage awards.

This post is part of a four-part series. In Part 1, we will look at the mechanics of the AAdvantage program. In Part 2, we’ll look at the mechanics of a stopover, including how to use them to get free oneway trips within North America. In Part 3, we’ll value specific AAdvantage awards. In Part 4, I’ll put a number on one AAdvantage mile.

1) American Airlines has two region-to-region charts, one for travel on American Airlines and one for travel on its partners.

Update April 1, 2014: This post was written before Southwest's massive devaluation. Now you need 70 points per dollar for Wanna Get Away? fares instead of 60. Now Rapid Rewards are worth about 1.45 cents each.

Southwest Airlines Rapid Rewards points are worth 1.69 cents per point. Unlike my calculation of the value of an Avios, the valuation of a Rapid Rewards point does not change based on where you live or your flying preferences because Rapid Rewards is a fixed-value award program.