**Note on this route:** The Birmingham referenced in the airline list (BHM) is Birmingham, Alabama—not the UK—which matters because there is no nonstop service between Birmingham, Alabama and Palma de Mallorca on any carrier. Business class from Birmingham to Palma de Mallorca requires a connection, typically routing through Atlanta on Delta or through London on British Airways/Iberia, with total journey times often exceeding the nominal ~10 hour flight time once you factor in the layover. Delta's transatlantic metal on this corridor usually means Delta One, either the reverse herringbone suites on 767/777 aircraft or the newer Delta One Suite with sliding doors on select widebodies, depending on which European gateway you connect through before continuing on to Palma. This is a case where the "flight time" figure is misleading unless you're just counting the transatlantic long-haul segment.
Having routed through Atlanta and London dozens of times on this kind of itinerary, my strong preference is Delta via Atlanta-Paris or Atlanta-Amsterdam, then a short intra-European hop into PMI, rather than funneling through Heathrow, where T5 connections to short-haul European flights can be tight and occasionally require a terminal change if arriving on a non-oneworld partner. If British Airways is your choice, their Club Suite (with the door) is worth booking on the transatlantic leg even if the Palma continuation reverts to a recliner-style Euro Business seat—that's standard across Europe and shouldn't be a dealbreaker. Iberia routings through Madrid are worth considering too, especially since Iberia's A330/A350 business cabins are consistently well-maintained, and Madrid connections to Palma run frequently, almost shuttle-like, during peak Mediterranean season.
Shoulder months—April, May, September, and October—remain your best window for award and revenue business class value, since summer sees Mallorca-bound leisure demand spike sharing overlapping through European hubs. One insider tip: build in a minimum 2.5-hour connection at Atlanta if flying Delta, since immigration and TSA re-screening for international transfers can eat far more time than posted minimums suggest. Given the complexity and multiple viable routings on this itinerary, setting up fare alerts to track business class pricing fluctuations across Delta, British Airways, and Iberia will save you from overpaying on a route that rarely has a single obvious "best" path.
