But when is it not worth it?. I note some talk about indirect routings. Earlier this year at short notice I had a trip from London to Toronto. No club seats avail direct outbounds, so was offered the choice of up front in Lufthansa via FFurt or in the back direct with Air Canada.
5 hours after take off from Heathrow as we flew back over the UK from Frankfurt, it occurred to me that I should have gone direct. Service was excellent, but I would rather have been in a bar in Downtown Toronto.