There's no nonstop way to make the Providence-to-Corfu run, and honestly, that's fine — the routing itself becomes part of the strategy. Business class from Providence to Corfu invariably means connecting through a major European gateway, and after years of testing combinations, I've settled on two reliable patterns: Lufthansa via Frankfurt or Munich, or British Airways via London Heathrow, both feeding into Aegean Airlines' short intra-European hop down to Corfu's compact CFU airport. The total journey runs close to 10.5 hours of actual flight time, but budget a realistic 13-15 hours door to door once you factor in the connection, since Corfu itself has no long-haul business class service.
I favor the Lufthansa routing when Allegris-equipped aircraft are in rotation on the transatlantic leg — the redesigned business suite with its sliding privacy door is a genuine upgrade over the older flat-bed product, though availability on this specific city pair is still spotty as the rollout continues, so it's worth checking aircraft type before booking. British Airways via Heathrow gives you Club Suite on the long-haul sector, with its direct-aisle access and proper suite door, which I've found more consistently reliable for on-time performance into T5 than the Frankfurt alternative during summer thunderstorm season. Whichever hub you choose, Aegean's short business class hop to Corfu is a modest but pleasant reset — expect a proper seat with blocked middle, a light meal, and none of the chaos that plagues Greek island routes in peak July and August, which is exactly why I steer clients toward April, May, September, and October instead, when Corfu's crowds thin and fares soften.
One tip few mention: if connecting through Munich rather than Frankfurt, Lufthansa's lounge there tends to be far less congested for evening Athens/Corfu-bound connections, giving you a calmer pre-flight hour. Given how much fares on this itinerary swing with the shoulder-season calendar, setting up automated fare alerts is the smartest way to catch a premium-cabin deal before it disappears.