Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.IHG is currently running a flash sale to sell points with a 100% bonus, dropping the cost to just 0.5 cents per point. Meanwhile, United is running a 50% transfer bonus for transferring IHG points to United miles. Instead of transferring at a 5:1 ratio, you’ll get 3,000 United miles for every 10,000 IHG Rewards points transferred.This opens a great sweet spot for just a few more hours: effectively buying United miles for just 1.67 cents per mile.Here’s how to take advantage of this offer:Buy at least 26,000 IHG points to get the maximized 0.5 cents per point purchase rate. You need to complete your purchase by 11:59pm Eastern Time on June 15 to get 100% the bonus.Once your points post to your IHG Rewards account, you can transfer the IHG points to United. Call IHG Rewards at 1-888-211-987 to initiate the transfer. You’ll need to transfer points by June 30 to get the 50% bonus.If you maximize this deal, you can buy 200,000 IHG Rewards points for $1,000 and transfer these points to United to net 60,000 United miles at an effective rate of 1.67 cents per mile.H/T: Loyalty Lobby