Seville rewards patience, and after a dozen or so routings through Europe's hub cities, I've concluded there's no shortcut worth taking that skips proper research first. There is no nonstop option here: business class from Detroit to Seville always involves a connection, typically through Madrid via Iberia, London Heathrow via British Airways, or Frankfurt/Munich via Lufthansa. Iberia's A330 and A350 business cabins offer direct one-stop access into Seville via Madrid, and this is often the most efficient itinerary given Iberia's multiple daily Madrid-Seville hops. British Airways routes through Heathrow, where Club Suite—BA's fully enclosed, door-equipped seat now rolling out across the 777 and A350 fleet—makes the long transatlantic leg genuinely restful before a short onward hop to Seville on a regional aircraft. Lufthansa connects via Frankfurt or Munich, and depending on aircraft assignment, you may find their long-haul business seat or, increasingly, the new Allegris cabin on select 787 and A350 routes.
My strong preference is the Iberia routing through Madrid-Barajas, because Terminal 4's dedicated Iberia business lounges are spacious and rarely crowded compared to Heathrow's T5 or Frankfurt's often-congested B gates, and the short intra-Spain hop to Seville feels almost like a private shuttle after the transatlantic haul. An insider tip few travelers know: booking the Madrid-Seville segment as a through-ticket with Iberia (rather than separately) often unlocks better business seat availability on the connecting flight, since Iberia prioritizes protected connections over standalone regional bookings.
Shoulder seasons—April, May, September, and October—are ideal for this route, both for Seville's climate (summer heat there is brutal) and for finding more workable premium award space, since leisure demand to Andalusia spikes sharply in peak summer. Because fares and premium inventory on this three-airline corridor shift constantly with hub scheduling changes, setting up dedicated fare alerts for Detroit-Seville business class is the smartest way to catch favorable pricing windows before they close.
