Originally Posted by
Flexible preferences
I think you need to through check your bags to the final destination on the ticket in both directions, at least coming home anyway. On the way out I am not so sure, but believe you need to check them in DUB.
though that is correct, as Physci says, you can add 'extra' bags along the way, i.e. no issue checking in back at LHR having already flown DUB LHR.