Houston to Ontario? There's No Airport Called That

Houston has no "Ontario Airport." You're likely mixing up:

• George Bush Intercontinental (IAH) — 20 mi north of downtown. United hub, major international.
• William P. Hobby (HOU) — 7 mi southeast. Southwest focus, domestic + Latin America.
• Ontario International (ONT) — In Ontario, California (Inland Empire, 35 mi east of LA).

If You Meant Houston → Ontario, CA (ONT)

• Nonstop: United (IAH→ONT), Southwest (HOU→ONT). ~3 hr flight.
• Typical fare: $150–400 round-trip (advance, off-peak); $500+ last-minute.
• Time: 3h 15m block; 2h 45m air.

If You Meant Houston → Ontario, Canada

• No nonstop. Connect via YYZ (Toronto), YVR (Vancouver), or US hubs.
• ~5–7 hours total. $350–800+.

Clarify the destination. Then check Google Flights, Skyscanner, or airline sites for live pricing.