I had the last segment cancelled from my PDX-SEA-LHR-BCN (LHR-BCN cancelled)--PDX-SEA is an Alaska codeshare, remainder of the flights are on BA metal.
I called in to ask if that would allow some change in routing due to the cancellation: specifically, whether they would allow us to fly via LAX instead of SEA. I was told "no" since there are no codeshare flights from PDX-LAX. Further, dropping the first segment and finding our own way to LAX is apparently not possible either, since it's over the 300mi limit in gateway changes. Is there any way around this, or are these the hard and fast rules?
Ideally we'd be flying PDX-LAX in the evening, spending the night there, and then taking the first flight out from LAX-LHR (16:15).
Thanks!