Zadar's Dalmatian coastline rewards patience, and nowhere is that more true than in the routing puzzle facing Indianapolis travelers chasing a proper lie-flat seat to Croatia. There's no nonstop option here—business class from Indianapolis to Zadar always requires at least one connection, typically through Frankfurt, Munich, or Istanbul, with total journey time running well beyond the 10-hour air time once you factor layovers. Lufthansa remains my preferred carrier for this itinerary, particularly now that select long-haul aircraft feature the new Allegris business seats with proper doors and adjustable privacy panels—a meaningful upgrade over the older business product still flying on some Frankfurt-bound routes. Turkish Airlines via Istanbul is the sleeper choice: their business class cabin, complete with generous IST lounge access and Turkish hospitality, often undercuts the German carriers on price while matching them on comfort.
Having routed through both Frankfurt and Istanbul multiple times en route to the Adriatic, my advice is to build in at least a two-hour connection window—Frankfurt's Terminal 1 can involve lengthy walks between arriving Star Alliance flights and departure gates, and Istanbul's sprawling new airport, while beautiful, punishes tight connections. Croatia Airlines (OU) typically operates the final leg into Zadar as an economy-configured regional jet, so don't expect business class seating on that short hop; instead, treat it as a quick puddle-jump reward after the long-haul comfort you've already banked. My insider tip: book the earliest morning Zadar arrival you can find during summer high season, since ZAD's small terminal gets overwhelmed by charter traffic from Northern Europe by midday, and immigration lines lengthen considerably after 11am.
April, May, September, and October consistently offer the best value for this itinerary, as European leisure demand softens and Lufthansa and Turkish adjust business fares accordingly—plus you'll dodge the Adriatic's summer crowds while still enjoying warm coastal weather. Given how thin and seasonal premium inventory can be on this Indianapolis-to-Zadar corridor, setting up automated fare alerts is genuinely the smartest way to catch the occasional pricing dip before it disappears.
