Palm Beach's proximity to three major East Coast gateways makes the transatlantic hop to Cork a study in routing strategy rather than a simple nonstop affair. There is no direct service on this city pair, so business class from West Palm Beach to Cork routes through hub connections on American, Delta, or United, typically via New York-JFK, Philadelphia, or Newark. American's transatlantic partner network often channels PBI travelers through JFK onto British Airways or American-metal widebodies fitted with the Flagship Suite, while Delta favors JFK or Boston connections using its A330 or A350 fleet featuring Delta One suites with sliding doors. United tends to route through Newark, its primary transatlantic hub, aboard 767 or 787 aircraft with Polaris seating. Total journey time hovers near 8 hours of actual flying once you strip out the connection, but plan for 11-13 hours door-to-door given the domestic leg.
Having flown this corridor repeatedly, I've found the PBI-to-JFK connection the most forgiving for business travelers, since JFK's Terminal 8 (American) and Terminal 4 (Delta) both offer dedicated business class check-in and lounge access that make the layover feel like part of the experience rather than an obstacle. My insider tip: book the earliest PBI departure you can stomach, ideally the 6-7am wave, because it lands you in New York with enough buffer to clear a lounge shower and meal before the evening transatlantic push to Cork or Dublin (many itineraries route through Dublin with a short connecting flight or coach transfer, so confirm your routing carefully at booking). Avoid tight sub-90-minute connections at JFK during winter storm season, as ATC delays cascade quickly.
Shoulder season—January through March and October into November—consistently delivers the softest business class fares on this Ireland-bound routing, as leisure demand dips and airlines discount premium cabins to fill them. Because pricing on this three-airline, hub-dependent route fluctuates with fuel surcharges and partner award availability, setting up automated fare alerts is the smartest way to catch a business class fare drop before it disappears.