I'm trying to build a multi-city itinerary on Croatian Airlines (and possibly LH). The itinerary will be BRU-ZAG, DBV-FRA. I can find the fares that I'm okay with on ITA, but I can't book the fares anywhere. Croatian Airlines website apparently does not offer the option for multi-city bookings and when I price the flights as one-way the fare is nearly double.

I can't get the same fare on Expedia.com or Travelocity.com. Does anyone have a suggestion?

I'm totally new to *A airlines.

Thank you.