Originally Posted by
yipinglim
General question regarding codeshare between United and ANA:
I'm looking to fly from SFO to SIN via NRT on ANA. If the prices are the same booking on either ANA or United, is there any reason why I would not want to book on ANA directly to avoid codeshares ?
The biggest disadvantage I could think of is that you would not be able to upgrade a UA codeshare on NH metal using NH upgrade points, or vice versa on a NH codeshare on UA metal with UA upgrade instruments. Star Alliance upgrades are also impossible on codeshares.