United just launched its latest buy miles sale, offering members either the opportunity to buy miles with up to a 100% bonus. That’s the best bonus that we’ve seen United offer. But, does it even make sense to buy miles? Let’s take a look at some examples.

Now through September 30, 2021, you’ll get a 30% bonus when transferring hotel points to United miles. This isn’t good enough to justify transferring points from most programs. However, there’s one exception: Marriott Bonvoy. By stacking transfer bonuses, you can get 35,750 United miles per 60,000 Marriott points transferred.

Now extended! Southwest Airlines is offering a fantastic promotion for one more day. Register and take one round-trip flight (or two one-way flights) by November 18 to earn a promotional Companion Pass for two months. But, you’re going to act quickly. You have until midnight on September 9 to register and book your flight. Here’s how to register for this awesome promotion!

IHG just launched its latest point sale, offering up to a 100% bonus on point purchases. If maximized, members can buy points for as little as 0.5 cents each. That matches the best point sale we’ve ever seen IHG offer, but you’ll need to act fast to snag this offer.

Flying Blue released its latest Promo Rewards for September 2021. Destinations within and beyond Europe are plentiful this month, with options in Africa, Asia, North America, and South America. If you’re able to take advantage of these 67 discounted routes, you’ll also get added flexibility. That’s because Flying Blue has widened the available window of travel and eliminated change fees on these awards until further notice.

Capital One just announced another transfer bonus promotion, this time to Air France/KLM Flying Blue. With the promotion, you receive a 20% bonus when you transfer Capital One Miles to Flying Blue through September 30, 2021. Use this transfer bonus to fly business class to Europe for under 59,000 Capital One miles.

In celebration of its 15th birthday, Etihad Airways is offering all Etihad Guest members 1,500 miles. The only caveat is you have to register before September 6, 2021. Plus, you can also get 15% of your miles back on all award flights booked with Etihad Airways before September 6, for travel before December 31, 2021.

Marriott’s newest global promotion is open for registration. Earn 1,500 bonus Bonvoy points on all stays between September 14 and December 12, 2021. Plus, some Bonvoy members are seeing targeted promotions, including earning a Free Night Award for completing just one stay! Here’s how to check your account for these promotions, and how to register for the newest Marriott global promotion.

American Express Membership Rewards are loaded with value. Now through (at least) the end of September, you can get even more out of them. Amex is offering various bonuses when you convert Membership Rewards to 12 different transfer partners.

Good news award travelers! Amex just launched another bonus for transferring Membership Rewards points to Marriott Bonvoy, and this time it’s even better. During this promotion, you’ll get 1,300 Marriott points for every 1,000 Membership Rewards points after the 30% bonus. As you’ll see in this article, that’s not the best deal. However, this offer may still be worth taking advantage of in some circumstances.