Silicon Valley executives chasing the midnight sun have quietly discovered that Reykjavík makes an elegant gateway to Europe, and the reality is there's no nonstop option for business class from San Jose to Reykjavík — every itinerary routes through a connecting hub, typically Seattle or San Francisco on Delta, Chicago, Denver, or Newark on United, or a transatlantic gateway before dropping into Keflavík on Icelandair's own metal. Delta's best bet involves connecting onto a transatlantic partner or its own long-haul aircraft to Amsterdam or elsewhere in Europe before backtracking, while United typically routes through its Newark or Chicago hubs onto widebody service across the Atlantic. Icelandair, meanwhile, is the only carrier with actual nonstop transatlantic metal touching Keflavík directly from several US cities, though not from San Jose itself, so most SJC travelers will position through Boston, Denver, or Seattle to catch Icelandair's Saga Premium cabin — a hybrid product with wide recliner seating rather than full lie-flat, worth knowing before you book expecting a traditional business suite.
Having routed through Keflavík dozens of times, I've learned the airport rewards early arrivals: KEF's compact single terminal means security and immigration move fast even during peak summer crush, so there's little upside to lingering in a connecting city lounge when you could be sipping coffee in Iceland's understated but efficient departures hall instead. My insider tip: if Icelandair's Saga cabin doesn't suit a red-eye sleep requirement, consider positioning through a Delta hub like Minneapolis or JFK to secure a Delta One suite with proper lie-flat seating and Westin Heavenly Bedding for the long transatlantic leg, then treat the KEF connection as a scenic stopover rather than a grueling layover — many travelers extend for 24-48 hours to catch the Blue Lagoon or Golden Circle before continuing into mainland Europe.
Late spring through early autumn — May through September — brings both the best weather for viewing Iceland's dramatic landscapes and the most frequent premium award and revenue fare movement on this corridor, as airlines adjust capacity for peak transatlantic demand. Because pricing and availability shift quickly across these three carriers and their connection points, setting up fare alerts is the smartest way to catch a favorable business class fare before it disappears.