FTD is offering 25 United miles per dollar plus 100 miles for flower purchases.
It’s a campaign tied to Valentine’s Day and the United Visa, but the offer doesn’t appear to require having or using a United Visa for the purchase. Unclear if or when the offer will expire, as most FTD offers stay around quite a long time. I used a temporary targeted 30 miles per dollar offer successfully for years, and as long as the offer details appear at the top of the landing page it should work.
This one is incrementally better than the 25 United mile per dollar offer which has been around for years.