In the spirit of this thread:
http://www.flyertalk.com/forum/unite...-1-flight.html
I'm wondering what the longest possible itinerary that could be upgraded with a single RPU. And to paraphrase
bhmlurker:
Upgradable with one RPU by everyday UA customers, no super circular routes, no zig zags, just a normal routing that UA call center would sell you. No weird routing that'd cause select UA employees to curse you out Oh yeah, the whole route must have F or C of some sort.
Is LIM-EWR RPU eligible? Otherwise what S. America origin gets you the longest RPU eligible flight to EWR (BOG? Quito only goes to IAH).
Then on to Hawaii. Does the single RPU then continue to be eligible on the island hopper flights?