Moldova rarely appears on American business travelers' radar, which is precisely why the routing deserves attention: there is no nonstop option, and business class from Indianapolis to Chisinau requires a strategic connection, typically through Frankfurt, Munich, or Istanbul, with total journey times running well beyond the ~11 hours of actual flying once you factor in the layover. Delta passengers departing IND usually route through Detroit or JFK before joining a joint-venture partner across the Atlantic, while Lufthansa and Turkish Airlines both offer more direct European-to-Chisinau legs that make them my preferred choices for this itinerary. I've flown this corridor enough times to know that Istanbul is the underrated hub here — Turkish Airlines' business class, with its wide seats and renowned onboard chef service on widebody aircraft, softens the long haul in a way that a domestic-to-international Delta connection through a crowded northeastern hub often doesn't.
Lufthansa's Frankfurt or Munich connection is worth considering if your Indianapolis departure aligns with Delta's transatlantic partnership schedule, giving you access to Lufthansa's business class product, including the newer Allegris cabin on select aircraft — though availability on the Chisinau leg itself is on a regional jet, so don't expect lie-flat seating for that final short hop. My insider tip: build in a deliberate overnight in Istanbul or Frankfurt rather than a tight connection; misconnects on the Chisinau segment are common because it's often operated with limited daily frequency, and Turkish Airlines' Istanbul Airport lounge is spacious enough to make a long layover genuinely pleasant rather than a chore.
Winter and shoulder-season months — January, February, March, October, and November — consistently offer the most favorable business class fares on this route, since Moldova sees minimal leisure demand outside of the warmer months. Given the routing complexity and fluctuating award space across three major carriers, I'd strongly recommend setting up fare alerts rather than manually checking each week; this is a route where patient, automated tracking pays off far more than impulsive booking.