Pula's tiny Istrian airport was never designed with transatlantic travelers in mind, which is precisely what makes routing there from Atlanta such an interesting exercise in connection strategy. There is no nonstop option, so business class from Atlanta to Pula requires a transfer through a major European gateway, and the smartest of these is Frankfurt or Munich via Lufthansa, with Zagreb via Croatia Airlines (OU) or Istanbul via Turkish Airlines (TK) as viable alternatives depending on schedule and fare class availability. Total travel time typically lands around 11 hours of actual flying once you factor in the connection, and Lufthansa's Frankfurt hub remains the most seamless for business class passengers thanks to its dedicated business lounges and efficient Schengen transfer process for onward flights into Croatia.
Having routed through all three carriers over the years, I'd steer discerning travelers toward Lufthansa's long-haul cabin out of Atlanta — increasingly featuring the new Allegris business class on select aircraft, with its sliding privacy doors and more personalized seat configurations, though older 747-8 and A340 configurations with the standard lie-flat business seat still appear on this corridor, so it's worth checking your specific aircraft type at booking. From Frankfurt or Munich, the onward hop to Pula (or via Zagreb) is typically a regional jet in business class, which is comfortable but modest — don't expect lounge access to match the long-haul leg, so build in time to enjoy Lufthansa's Frankfurt Senator lounge before your final descent into Istria. Turkish Airlines' Istanbul routing has its own appeal, particularly for those wanting to sample TK's well-regarded business class catering and their Istanbul Airport lounge, one of the most spacious in Europe, before a short hop to Croatia.
Istria's high season runs June through August, driving both leisure fares and connection congestion upward, so April, May, September, and October consistently offer the best combination of pleasant coastal weather and softer business class pricing on this corridor. My insider tip: booking the Lufthansa Frankfurt-Pula seasonal seasonal service directly rather than through Zagreb often unlocks better award saver space, since fewer travelers realize this direct regional link exists. Given the routing complexity and seasonal fare swings, setting up fare alerts for this specific city pair is genuinely the most efficient way to catch premium seats before they disappear.
