German phrase
Welche ~ fallen bei Verspätung an?
Meaning
What ___ are incurred when a delay occurs?
When to use it
It asks about delay costs. It politely checks which extra charges apply beyond the fare.
Example dialogue
Welche Kosten fallen bei Verspätung an?
What costs are incurred when a delay occurs?
Das kommt auf das Ticket an; meist fallen Umbuchungsgebühren und Verpflegungskosten an.
That depends on the ticket; usually, rebooking fees and meal costs apply.