air-routes.com

2026.09.06 (9738fd5)

      1 result

      1 direct flight
      SEA → BFI
      • Alaska Airlines (Mon, Tue, Thu, Fri, Sat, Sun); Delta Air Lines (Mon, Wed, Fri, Sun); All Nippon Airways (Mon, Thu); Omni Air International (Thu, Fri, Sat); Horizon Air (Thu, Fri, Sat); Sun Country Airlines (Mon, Fri); Southwest Airlines (Tue) — nonstop, 0h 30m

      How it works — direct flights first; otherwise connections ordered preferring fewer stops (times shown are flying time only), up to seven.
      Data refreshed daily · API docs · /api/connections?from=OTP&to=BCN