Originally Posted by
Prospero
There are two governing bodies applicable here:
The US DOT mandates that the marketing carrier’s checked baggage policy applies to flights that originate or end in the USA.
Elsewhere, IATA rules apply, which state the rules belonging to the operating carrier applies.
Thanks. This is probably the best explanation and reason. I wasn't charged any luggage fees from BOS to LHR on Iberia. I wasn't charged any luggage fees from MAD to BOS on Iberia. Both basic economy flights.
But I was charged luggage fees from LHR to BCN on Iberia. Also basic economy. I certainly would have paid the luggage fees at booking time if I knew this as the fees are much less than at the airport.