Any reciprocal benefits offered between now and then may include free checked bags, bonus miles, and complimentary domestic upgrades. (travelcodex.com)
American, for instance, charges 15,000 miles plus $ 75 for a one - way domestic upgrade. (rewardexpert.com)
They've compromised somewhat on this between the two systems, taking the current AAdvantage domestic upgrade process, with unlimited complimentary upgrades on short flights. (viewfromthewing.boardingarea.com)