air-routes.com

2026.09.07 (63e2638)

      7 results

      No direct — 7 connections
      IST → STL
      • via Chicago (ORD) — 12h 16m total
      • via Frankfurt am Main (FRA) — 12h 18m total
      • via Montréal (YUL) — 12h 21m total
      • via Detroit (DTW) — 12h 24m total
      • via London (LHR) — 12h 31m total
      • via Toronto (YYZ) — 12h 33m total
      • via Boston (BOS) — 12h 40m total

      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