While some jet-setters prefer flying by the  seat  of their pants, others plan to cruise the clouds in comfort.  Luckily for globetrotters inclined toward coziness, the airlines with the world’s most spacious economy seats of 2026 have just been revealed, crowning New York’s JetBlue as the only US-based carrier as a runner-up in the roominess ranking.  Still, it’s a high honor to be recognized for offering high-quality chairs to low-budget derrières.  Researchers for SimpleFlying , a virtual