Originally Posted by
trooper
Wouldn't DL/AA/UA also operate similar International flights with those seats empty (absent folks using upgrade instruments/$$$?) I thought free upgrades were purely a US domestic thing..(OK..plus some nearby "international" destinations)
That's correct - No major airline routinely upgrades people for free on long-haul international flights; even for their own elites. It's always a matter of cash/miles/upgrade instruments, unless it's an OP-UP