US Airways is running a 100% bonus on purchased miles through September 30.

For the past several years US Airways has been the industry leader in selling miles cheap. Offering a 100% bonus just meant, more or less, meant that it was a day of the week that ended in “day”.

With this offer they sell 20,000 or more miles at 1.88 cents apiece.

Of course US Airways miles aren’t as cheap as they used to be or even as cheap as they used to be.

And you can’t get 90,000 mile Hong Kong awards in business class anymore. But now that those are 110,000 miles, you might as well go for first class which is just 120,000 miles roundtrip. Hard to argue first isn’t worth it, for just 5000 miles more each way.

I’m not a buyer presently, but US Airways has been selling miles cheaper than American ever used to. American’s bonus offers have gotten a bit more aggressive, but we still didn’t know what to expect for the future.

I’m told that this is likely the last go of a 100% bonus on US Airways miles at current pricing. This isn’t a public or official pronouncement, but something I’ve been told — that as part of integrating the Dividend Miles and AAdvantage programs, at a latest case come November the bonus and pricing structure for US Airways miles will look more like the old American approach.

That may or may not influence your thinking about jumping in on the last five days of the current offer.

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