A few weeks ago, MH launched MHupgrade, allowing passengers on eligible itineraries to bid for upgrades. Anecdotally, it appears most paid fares (other than those in the highest cabin already) are eligible for upgrades. I received email notification of this service for a booking made via MH, but not for a booking made through an online TA, but checked online at above link - and it indeed was eligible.
Anecdotally (on FT) it seems some relatively inexpensive upgrades are available.
Also, in case someone asks, upgrades book into I class - which is not eligible for miles/status accrual - but miles accrual from originally ticketed fare class should still apply.
Anecdotally (on FT) it seems some relatively inexpensive upgrades are available.
Also, in case someone asks, upgrades book into I class - which is not eligible for miles/status accrual - but miles accrual from originally ticketed fare class should still apply.