Five airlines cover this corridor well, each with a different personality. American's Flagship Business, connecting via its US hubs into a partner's European network, offers a 1-2-1 lie-flat suite with Casper bedding and Flagship Lounge access on the Miami end. British Airways routes through London with its newer Club Suite product, the one with an actual closing door for privacy, dressed in White Company linens. Lufthansa's Allegris suites on its A350s, connecting through Frankfurt, bring German engineering to the seat design along with genuinely efficient service. Iberia funnels traffic through Madrid with a comfortable 1-2-1 lie-flat cabin and a strong Spanish food and wine program worth trying. Turkish Airlines, via Istanbul, pairs a solid lie-flat seat with DO&CO catering and one of the more impressive airport lounges in the world if your layover allows time to enjoy it. Each of these carriers gives Miami to Strasbourg business class travelers a genuinely different connection city experience, so the choice often comes down to whether you'd rather stop in London, Frankfurt, Madrid, or Istanbul.