I ran a search but didn't find anything definitive.
I'm looking to fly PHL-SYD in a few months using GPUs to upgrade outbound and return.
Lately the UA site is returning pretty good fares that book into a K fare basis for the domestic legs to LAX or SFO and a W fare basis for the transpac leg.
Does anyone have experience upgrading a mixed fare basis ticket with GPUs? It looks like it should be no problem to apply it to all the legs but I'd like to be sure.
I'm looking to fly PHL-SYD in a few months using GPUs to upgrade outbound and return.
Lately the UA site is returning pretty good fares that book into a K fare basis for the domestic legs to LAX or SFO and a W fare basis for the transpac leg.
Does anyone have experience upgrading a mixed fare basis ticket with GPUs? It looks like it should be no problem to apply it to all the legs but I'd like to be sure.