Originally Posted by
Often1
Bad information here. US law provides that for tickets to/from the USA, the baggage allowance for the marketing carrier of the first segment is the allowance for all segments of that ticket, including the return.
Who is the marketing carrier for your BKK-NRT segment and what is the allowance for that segment?
I flew LHR to PTY thru EWR, all on UA. LHR - EWR was on Y. I upgraded my EWR - PTY leg to J as it was ~price of the E+ seat I was going to buy anyway. After purchasing that upgrade my baggage allowance changed on the UA site from 1 pieces free to 2 pieces free. I checked in and they put priority tag on my bag. I had no status at the time
Same on way back, and again baggage changed from 1 piece to 2 pieces