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| Current local time | 07:48:01 Sunday 23.08.2026 |
| Time zone | UTC - 08:00 |
| Demand calculation | 22:58:59 UTC |
| IATA code | ONT |
| ICAO code | KONT |
| IATA Area | Traffic Conference 1 |
| IATA Sub-Area | North America |
| Region | California |
| Country | USA |
| Continent | North America |
| Runway | 3,717 m |
| Airport size | Above-average sized airport |
| Slots (per 5 minutes) | 8 |
| Slot Availability | 99% |
| Min. transfer time | 01:00h |
| Nighttime ban | no nighttime ban |
| Noise restrictions | no noise restrictions |
| Passengers | ![]() |
| Cargo | ![]() |
| 2026-08-22 17:18 UTC | SilverWings has opened a new station at Ontario. |
| 2026-08-17 16:23 UTC | Royal Canadian Airlines has opened a new station at Ontario. |
| 2026-08-15 10:14 UTC | linlin, based at Ontario, has ceased operations. All shares have been returned or liquidated. |
| 2026-08-15 10:13 UTC | linlin has been founded in Ontario. |
| 2026-08-13 18:17 UTC | USWestern has opened a new station at Ontario. |
| 2026-08-07 08:44 UTC | Jetline US has opened a new station at Ontario. |
| 2026-08-07 07:12 UTC | Flystar US has opened a new station at Ontario. |
| 2026-08-02 06:31 UTC | Pacific Sunset Airlines has opened a new station at Ontario. |
| 2026-08-02 01:11 UTC | Pacific Sunset Airlines has opened a new station at Ontario. |
| 2026-07-30 23:16 UTC | CalStar Airways has opened a new station at Ontario. |
| 2026-07-25 15:42 UTC | CaliAirShuttle has opened a new station at Ontario. |
| 2026-07-20 16:55 UTC | Norcal Airlines has opened a new station at Ontario. |
| 2026-07-20 11:39 UTC | Guo Air has opened a new station at Ontario. |
| 2026-07-20 08:50 UTC | Ventura Airways has opened a new station at Ontario. |
| 2026-07-19 18:05 UTC | Ventura Airways has opened a new station at Ontario. |
There are thousands of airports and hundreds of countries in AirlineSim. Consequently, data are bound to be wrong sometimes. In case you came across any mistake - like wrong values, missing airports or naming errors - please send your findings, your sources and a detailed description of the issue to support@airlinesim.aero. Thank you very much for your support!
| Enterprise | IL | Weekly departures | Flight schedule | ||
|---|---|---|---|---|---|
| CAL Airways | 14 Departures | ||||
| CaliAirShuttle | 7 Departures | ||||
| Dada Air | 0 Departures | ||||
|
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Diamond Airline | 21 Departures | |||
|
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Flystar US | 14 Departures | |||
| Jetline US | 2 Departures | ||||
| LAKAIR Cargo | 14 Departures | ||||
| Norcal Airlines | 7 Departures | ||||
|
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Patriot Airlines | 0 Departures | |||
|
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Royal Canadian Airlines | 7 Departures | |||
| SilverWings | 14 Departures | ||||
| USWestern | 0 Departures | ||||