air-routes.com

2026.09.06 (9738fd5)

      1 result

      1 direct flight
      ONT → IAH
      • Frontier Airlines (Mon 17:43/20:06 · Tue 17:43/20:06 · Wed 17:43/20:06 · Thu 17:43/20:06 · Fri 17:43/20:06 · Sat 17:43/17:59 · Sun 17:43/20:06); United Airlines (Mon 05:45/06:00 · Tue 05:45/06:00 · Wed 05:45/06:00 · Thu 05:45/06:00 · Fri 05:45/06:00 · Sat 05:45/06:00 · Sun 05:45/06:00); Delta Air Lines (Tue, Wed, Thu) — nonstop, 2h 51m

      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