I just received an email from Chase regarding this promo. You can earn a total of 10% cash back ( regular 1% cash back plus 9% bonus) on up to $2,500 in combined hotel and car rental purchases made only through Chase Ultimate Rewards in July. You need to use your Chase Freedom card in order to get the bonus. You can earn up to $250 total cash back ($25 cash back plus your $225 bonus cash back).
Transaction must post during the promotional period but you can travel anytime. Bonus cash back will post to your account within a week of the transaction posting, and will appear on your monthly credit card billing statement and be available for use within 1-2 billing cycles. To qualify for this promotional offer, account must be open and not in default at the time of fulfillment.
You might not get the best prices through Chase Ultimate Rewards so double check first to make sure you’re getting a good deal. They don’t usually have the best hotel prices, but they have competitive car rental rates.