Ontario International Airport averages 94 flights per day to 61 destinations, with 54 domestic and 7 international routes. A total of 30 airlines operate at ONT, led by Southwest Airlines. This airport provides direct service to 4 countries across two continents, with a route network dominated by domestic flights and Mexico as its largest international market. The longest nonstop route from Ontario connects to Taipei, with a typical flight time of 13 hrs 10 mins.
- Destinations
- 61 (54 domestic · 7 international)
- Flights per day
- 94 (88 domestic · 8 international)
- Busiest Route
- Phoenix (9/day)
- Longest Direct Flight
- Taipei 13 hrs 10 mins
- Shortest Flight
- San Bernardino 15 mins
- Top Airline
- Southwest Airlines (12 routes)
Weather in Ontario
61 Destinations from Ontario Airport (ONT)
This week, 61 active routes depart from Ontario International Airport. The busiest route connects Ontario with Phoenix and is operated by 2 airlines. The longest nonstop flight is to Taipei, and the shortest flight is to San Bernardino.
All Destinations
Airlines
Ontario International Airport is served by 30 airlines, with Southwest Airlines in the lead at 13% of routes. The top three carriers together cover 34% of routes. 16 carriers operate only one route each. A total of 6 airlines operate international routes, compared with 26 serving domestic routes. China Airlines is operating the longest nonstop flight, connecting to Taipei with a flight time of 13 hrs 10 mins.
Ontario International Airport provides direct service to 4 countries across two continents. The route network is 89% domestic and 11% international, with Guadalajara, Mexico serving as the primary international destination.
Global Rankings of Ontario Airport (ONT)
This snapshot shows how Ontario Airport (ONT) ranks globally across multiple operational and network dimensions. Rankings reflect relative position worldwide across destination breadth, flight volume, scheduling density, and long-haul reach.
Destinations
Measures how broadly the airport connects distinct endpoints across its route network.
- #258 – Total Destination Count (Network breadth)
- #145 – Domestic Destination Count
- #558 – International Destination Count
Flights & Scheduling
Reflects flight volume and how intensively runway infrastructure is scheduled.
- #247 – Total Flight Count (Operational intensity)
- #164 – Domestic Flight Count
- #477 – International Flight Count
- #315 – Flights per Runway (Scheduling density)
Distance & Reach
Highlights long-haul connectivity and how distance is distributed across flights and runways.
- #244 – Total Distance Flown (Global reach)
- #448 – Distance per Flight (Route profile)
- #296 – Distance per Runway (Long-haul leverage)
5 Runways at Ontario Airport (ONT)
The runways at this airport are long enough to accomodate all aircraft.