BTW, I tried looking up a fare for one week NYC-Zagreb round trip. They offered fares in $800-$3000 range. Interesting, for ZAG-JFK trip (that is, other way around) any agent in Zagreb will easily find fares below $400.

yes, international fares are not our strong point. the AI-based engine only applies to domestic flights in the US.

you'll often find the best deals on international flights from tour operators or wholesalers that buy blocks of seats from the airlines at rock-bottom prices and resell at a discount.

--dan.