Southwest Florida's seasonal airport doesn't hand you a nonstop to Scandinavia, and that's precisely why routing strategy matters more here than on almost any other transatlantic itinerary I cover. There is no direct service between RSW and ARN, so business class from Fort Myers to Stockholm always means a connection, typically through Delta's Atlanta or New York-JFK gateways, American's Philadelphia or Charlotte hubs, or United's Newark or Chicago operations, before the long overnight hop to Arlanda. Delta's transatlantic metal, operated in joint venture partnership with Air France-KLM on many European legs, increasingly features the Delta One suite with a closing door on A330-900neo and A350 aircraft, while United's Polaris business seats appear on select 767 and 787 widebodies serving Newark-Stockholm during peak summer months. American routes Scandinavian traffic more through its partners, so expect a codeshare experience on the transatlantic leg rather than dedicated AA metal all the way to ARN.
Having connected through all three hubs multiple times, I'll say Newark offers the cleanest single-connection option when United operates its seasonal Stockholm nonstop, cutting total travel time closer to the 9.5-hour flight time on the long-haul segment alone rather than adding hours of layover. Atlanta works well for Delta loyalists chasing Sky Club access and smoother domestic-to-international transfers, though summer thunderstorm season can create afternoon delays that ripple into evening departures—so book morning connecting flights out of RSW whenever possible. Arlanda itself rewards early planning: its Fast Track security lane for business class passengers moves quickly even during the June-August tourist surge, and landing before 8am lets you clear immigration ahead of the bank of overnight European arrivals.
Because RSW's seasonal capacity shifts flight availability throughout the year, fares and premium cabin space on this corridor fluctuate more unpredictably than routes from larger Florida gateways. May through September remains the sweet spot for both weather and availability, but I'd strongly recommend setting up fare tracking alerts now, since business class award space and paid fares here can shift with little warning.