The US Airways 100% bonus on purchased or gifted miles that was supposed to expire November 15 has apparently been extended to November 30.

The landing page for buying and gifting miles still says the bonus expires November 15, but if you choose either buy or gift miles the terms on conditions on each of those pages now list the expiration date of the bonus as November 30.

Now, some folks are a little bit nervous about US Airways miles at the moment since they’ve been having difficulty redeeming awards between the US and Europe on Lufthansa that are being offered to other Star Alliance members. The fear is that US Airways has implemented some sort of blocking scheme, similar to what United had in place for years, when they don’t want to pay the partner airline so much for their seats (and Lufthansa availability is on the whole too good, many partners wind up buying seats from Lufthansa in large quantities). Of course it’s too early to tell what’s going on there, it could well be an IT glitch, we’ll figure it out for sure over the coming weeks I’d imagine.

But it doesn’t actually matter for the purposes of this bonus. Since US Airways agents will put awards on hold without your having a sufficient mileage balance, you can first secure the reservation and then and only then buy the miles you need to support that reservation. In that way, as long as you’re using the miles right away, it becomes a virtually no risk offer.