Upvote:1
Many if not most frequent flyer programs offer some sort of "friends and family" program, either through pooling miles or allowing family members to transfer miles, which has the same net effect. For example...
I suspect the list of major airline FFPs that don't allow this in some form or another is shorter! Off the top of my head, I know of only Singapore Airlines' Krisflyer.
Beware that, nearly universally, family member travel/miles transfers do not count for status qualification. So if it takes 50,000 miles for Gold, and four people in your family fly 15,000 mi each, you're not going to qualify even if your FFP allows 100% gifting and there are now 60,000 mi sitting in your account.