Seville's Andalusian charm rarely appears on the same sentence as Indianapolis, yet the connection is more manageable than most flyers assume once you understand the routing logic. There is no nonstop option, so business class from Indianapolis to Seville inevitably routes through a major transatlantic gateway — and after dozens of itineraries pieced together on this exact corridor, I can say confidently that Chicago O'Hare or Dallas-Fort Worth via American Airlines, connecting onto British Airways or Iberia in London or Madrid, tends to produce the smoothest experience. American's domestic leg from Indianapolis feeds efficiently into its widebody hubs, and from there you're onto proper long-haul business product: British Airways' Club Suite, with its sliding door and direct aisle access, is the standout choice on the transatlantic segment if you route through Heathrow, while Iberia's A330 and A350 business class, featuring lie-flat seats with reverse herringbone configuration on the A350, works well if you prefer a single-connection routing through Madrid before a short regional hop to Seville.
Madrid-Barajas is genuinely the more elegant gateway for this itinerary, since Iberia operates the Madrid-Seville shuttle frequently and Terminal 4S is purpose-built for smooth intra-Iberia connections, whereas London requires navigating Heathrow's Terminal 5 and a separate carrier for the final leg. My insider tip: build in a two-hour minimum connection in Madrid rather than the minimum legal connection time, because Iberia's short-haul gates to Andalusian cities are sometimes a considerable walk from where widebody arrivals park, and immigration into the Schengen zone happens in Madrid, not Seville — so you'll clear passport control before that final hop, which changes how tight you can safely cut things.
April, May, September, and October remain the sweet spot for this routing, both for Seville's climate — brutal by July — and for softer transatlantic business fares as summer peak demand fades. Given the multiple viable routings and carriers involved, setting up fare alerts across American, British Airways, and Iberia simultaneously is the smartest way to catch the inevitable pricing dips on this itinerary.
