United MileagePlus (Consolidated) - My friend is platinum, can he use my GPU to upgrade his longhaul flight?

And how to do that? What is the normal value of GPU? I cannot enter couponconnect now. I have no idea the value of GPU.

And how to do that? What is the normal value of GPU? I cannot enter couponconnect now. I have no idea the value of GPU.

The value is whatever you place on it.

And yes you can upgrade him..while logged in to your account pull up his itinerary using the confirmation number and click on the upgrade button. It will allow you to apply your GPU.. or, give your MP# and PIN to him and he can do it himself from your account.

Please see:

http://www.flyertalk.com/forum/united-mileageplus-consolidated/1321087-learning-new-website-how-sponsor-upgrade.html

Short answer: YES. And your friend would get your 1K status for prioritization.

NB: You do NOT want to accept anything of value in exchange for the GPU (ie: sell it) as that would violate the terms of the program and put both of your accounts at risk.

If you can't use a GPU and want to sponsor a friend, you can do it from the website. Search the forums for some very good descriptions of the specific steps, for example:
http://www.flyertalk.com/forum/united-mileageplus-consolidated/1321087-learning-new-website-how-sponsor-upgrade.html

Sponsoring another member

Premier members may request an upgrade for any other traveler using a Global Premier Upgrade, even if they are not traveling on the same reservation. In order to sponsor a Global Premier Upgrade for another traveler, the sponsoring member will need to sign in to united.com using their own account, then search for the reservation using the traveling member’s confirmation number and last name. The sponsoring member can then redeem the Global Premier Upgrade by selecting the Upgrade Reservation link. Waitlist confirmation priority is based on the Premier status of the redeeming account.

thanks