Round Trip TicketsTo purchase a round trip, please try to buy the return leg
CUL-CEI first, without actually buying it, then proceed to buy the other and immediately buy the original!
This way we'll know, it's a round trip and in case one leg has been sold out, we don't buy either.
If the purchases are more than 20 min apart or have a different name/email address, they will not show up in our system as belonging together! (and we might buy just one leg)