Reykjavík occupies a curious sweet spot in the transatlantic map — close enough to Atlanta for a manageable overnight hop, yet far enough north to deliver genuine Nordic scenery the moment you deplane. Business class from Atlanta to Reykjavík has become one of the more interesting seasonal plays in the transatlantic market: Delta and Icelandair both operate nonstop service on this route, typically running from late spring through early fall, while United passengers instead connect through Newark or Washington Dulles to reach Keflavík aboard Polaris-equipped 767s and 787s. That seasonality matters — outside the May-through-September window, nonstop options thin out considerably, and travelers often end up routing through JFK or Boston instead.
Delta's product on this route is Delta One, and depending on the aircraft assigned that season, you'll find either the suite with closing door on newer widebodies or the standard flat-bed on the 767, both perfectly comfortable for the roughly 6.5-hour crossing. Icelandair is the wrinkle worth understanding before you book: its Saga Class is a premium cabin with wider recliner-style seating and better service, but it is not a true lie-flat product, so travelers prioritizing sleep on a red-eye departure should weigh that against Delta's fully flat option. United's Polaris, reached via a connection, offers direct-aisle access and proper bedding, making it worth the extra hop if your dates align better with Newark or Dulles departures. One insider move that rarely gets mentioned: Icelandair's free stopover program lets you break your journey in Reykjavík for up to seven days at no additional airfare, effectively turning a business trip into a bonus Icelandic getaway if you build it into your itinerary early.
Keflavík's compact terminal means even late-night arrivals clear immigration quickly, a small mercy after a transatlantic red-eye. Because this route's premium fares swing significantly with the shoulder-season calendar, setting up continuous fare alerts is the smartest way to catch the inevitable dips before they disappear.