Sorry to hear about your baggage through-check problem.
Presumably as a cost-saving measure airlines are increasingly restricting the availability of baggage through-checking. In more and more cases they are limiting this facility to those passengers who hold one ticket or who are connecting between alliance members.
But as our readers are discovering, even when they travel with the same alliance carrier or hold one ticket there is no guarantee that their bags will be through-checked.
One Munich-based reader travelled with LH and NZ from Munich to Auckland via Hong Kong using separate tickets. The LH staff in Munich happily checked his bags right through. But on the return trip, NZ staff in Auckland refused to do likewise “because of the recession.”
A Luxembourg-based reader travelling with a regular ticket (ie a single published fare ticket for the entire trip) couldn’t get AC to through check his bags between Toronto and Luxembourg. He had booked Lufthansa for the Toronto-Frankfurt sector but the flight was actually operated by Air Canada.
Had Lufthansa been the operator he could have got his bags through checked onto Luxair at Frankfurt for the final leg to Luxembourg. But because Air Canada was the operator and this airline does not hold a baggage agreement with Luxair, he could not.
So as you can see, it’s a complex situation and the airlines show no signs of resolving the matter.