1. Register here for a $50 promo code off of any AA flight booking when booking with a Mastercard for travel before March 15, 2022. There’s a catch though, the code comes six to eight weeks after your first booking for a second booking. So, it’s really a buy-one, get-one for $50 off offer. I bet you can game it with a refundable fare, but at this point no one has been able to try.
2. Check here for a targeted offer for 135,000 points for upgrading from an American Express Gold or Green card to a Platinum card. Yes, this may even work with the NLL Business Gold card that you may have opened on Thursday. (Thanks to DDG)
3. An interesting promotion has come from Avis, which has happened in the past (checks notes) approximately zero times. Register at that link, then rent an intermediate car from Avis twice for at least two days and you’ll earn a free rental day. Also, don’t forget to register for Avis Preferred status if you have an American Express Platinum card. It’s an even stronger flex if your Platinum card was from item 2.