Originally Posted by
MaineFlyer16
Does anyone know how mileage upgrades work when transiting through North America? Flying LHR-JFK-BOS-LAX-SYD. I am assuming I would have to use two upgrades plus copays?
That type of upgrade is good for 3 segments, so definitely LHR-JFK-BOS-LAX. I'm not sure though whether you can choose which segments, for example, could you skip JFK-BOS and use the upgrade on LAX-SYD?