Bradley International isn't a hub anyone associates with transatlantic glamour, but that's precisely what makes routing through it to Andalusia so rewarding once you understand the mechanics. There's no nonstop option here: business class from Hartford to Seville always requires a connection, and after many iterations of this itinerary, I've settled on two reliable strategies. The first is flying American Airlines out of BDL to a East Coast gateway like Philadelphia or JFK, then transferring onto American's transatlantic metal or a British Airways codeshare into London Heathrow, where a same-terminal connection (Terminal 3 to Terminal 5, or vice versa depending on routing) onto a British Airways Club Suite flight gets you into Seville via Madrid or with a Madrid stopover on Iberia. The second, often smoother, option is connecting through Madrid on Iberia, whose A330 and A350 business cabins feature direct-aisle-access seating on the A350 and a more traditional 2-2-2 on some A330s — worth checking your aircraft type at booking since the experience differs meaningfully.
Iberia's Madrid hub is the more elegant solution operationally: it's a genuine Spanish gateway with frequent short connecting hops to Seville, and Iberia's business class lounges in Terminal 4 are spacious enough to make a long layover feel like part of the trip rather than a tax on it. If you route via London instead, British Airways' Club Suite — with its sliding door and fully flat bed — is worth the extra connection time, especially on the transatlantic leg where the difference in rest quality is substantial over an 8.5-hour flight. My insider tip: when connecting through Madrid, request an Iberia fast-track for the Schengen passport check if your layover is under two hours, as this queue is the most common point of delay for missed connections into Seville.
April, May, September, and October aren't just pleasant weather windows in Andalusia — they're also when award and discounted business fares on this Hartford–Seville corridor tend to loosen up, as summer heat and holiday crowds subside. Given the multiple routing permutations and carriers involved, setting up automated fare alerts is the smartest way to catch these seasonal dips before they disappear.