There's no nonstop way to reach the Maltese archipelago from the Pacific Northwest, which is precisely what makes routing strategy the whole game when booking business class from Seattle to Malta. The most reliable path pairs Delta's transatlantic metal—typically an A330 or A350 with the Delta One suite, sliding door included—out of Seattle to a European gateway, then connects onward via Air Malta or Lufthansa to Malta International Airport. Delta One from SEA runs primarily through Amsterdam or Paris depending on season, and I've found the Amsterdam connection consistently smoother for onward Air Malta service, since Schiphol's transfer process is fast even with a lounge stop. Lufthansa routings through Frankfurt or Munich are the other strong option, especially if you can snag their new Allegris business class on the long-haul leg—though as of now Allegris deployment is still limited, so confirm aircraft type before booking, as older Lufthansa business seats (the 2-2-2 herringbone) are a noticeably lesser experience.
Having flown this corridor several times, my strongest insider tip is this: book the Air Malta or Lufthansa short-haul connector as a separate award or discounted economy segment only if your main carrier's connection times are brutal—Malta-bound flights from Frankfurt and Munich are frequent enough that you don't need to marry yourself to a single itinerary, and this flexibility often unlocks better business class award space on the long transatlantic leg. Arrive at SEA at least two hours early during summer for TSA PreCheck lines, which back up more than travelers expect given the airport's growing international traffic.
April, May, September, and October are the sweet spot for this route—shoulder season avoids both Malta's punishing July heat and the holiday fare spikes—and business class award space from Seattle opens up noticeably wider during these windows. Given the multiple connection possibilities and three carriers in play, fares and award availability shift often enough that setting up automated price and award alerts for this specific SEA-MLA corridor will save you both money and frustration.
