Santorini's caldera views are worth every mile of the journey from Louisiana, but there's no way around it: business class from New Orleans to Santorini requires at least one, often two, connections, since no US carrier or partner flies this pairing nonstop. The most reliable routing pairs Lufthansa's transatlantic metal through Frankfurt or Munich with an Aegean Airlines connection down to Santorini's small JTR airport, while British Airways offers a compelling alternative via London Heathrow with a change onto Aegean or a seasonal BA service into Athens before the short island hop. Total elapsed time from MSY typically runs 15-18 hours including connections, though the core long-haul segment mirrors the roughly 11-hour transatlantic flight time. I've routed this trip through both Frankfurt and Heathrow, and Frankfurt consistently offers shorter, less chaotic connection times for the onward Aegean flight.
Lufthansa's staggered introduction of Allegris cabins means the specific 777 or A350 you're assigned matters more than usual—request an Allegris-equipped aircraft when booking if you want the newer suite with a door, rather than the older, more open business seat still flying on many Frankfurt rotations. British Airways loyalists should aim for the Club Suite on the transatlantic legs out of London, a genuine step up from BA's older Club World product, with direct aisle access and proper privacy that makes the long overnight to Europe far more bearable. One insider tip few mention: Aegean's short intra-European hop down to Santorini rarely offers a true business cabin experience, so treat that segment as a formality and focus your seat-selection energy on the transatlantic leg where the hours actually accumulate.
Seasonality plays a major role in both comfort and availability here. April, May, September, and October hit the sweet spot—Santorini's brutal August crowds have thinned, Mediterranean weather is still glorious, and premium award space on Lufthansa and British Airways loosens considerably compared to peak summer. Given the complexity of routing options and the volatility of business class award and revenue fares on this itinerary, setting up automated fare alerts is the smartest way to catch a strong release before it disappears.