For Seattle to Pristina business class, five airlines offer genuinely competitive lie-flat products. Delta routes you through Amsterdam or a European gateway in its Delta One Suite, a fully enclosed suite with a closing door, 1-2-1 configuration, and a Tumi amenity kit — arguably the most private hard product of the group. British Airways connects via London in its newer Club Suite, also door-equipped, dressed in White Company bedding, a strong pick if you want a Heathrow stopover. Lufthansa flies its Allegris Business suites out of Frankfurt or Munich on the A350, leaning on German engineering and genuinely improved seat privacy over its older cabins. Iberia routes through Madrid with a comfortable 1-2-1 lie-flat seat and the bonus of Spanish cuisine onboard, while Air France connects via Paris CDG, pairing lie-flat comfort with La Première lounge access for those with long layovers. All five give you a fully flat bed for the long overnight legs, which matters enormously on a 13-hour-plus total journey.