Airports › Ontario (ONT) › June 2024
Airport month · June 2024
Ontario International in June 2024
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In June 2024, reporting carriers scheduled 2,304 domestic departures from Ontario International (ONT). 80.0% left less than 15 minutes late and 80.6% reached their destination on time; 1.2% were cancelled.
Nationally that month, 73.7% of flights departed on time and 73.9% arrived on time, so ONT departures were 6.3 points above the national departure figure.
Flights arriving at ONT that month were on time 74.4% of the time (2,304 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 35% and national aviation system 13%.
- On time 80.6%
- Arrived 15+ minutes late 17.9%
- Cancelled 1.2%
- Diverted 0.3%
June 2024 against a year earlier, the airport's year and the nation
| Measure | Jun 2024 | Year earlier | ONT, 12 months to Jul 2026 | All reported flights, Jun 2024 |
|---|---|---|---|---|
| Departed on time | 80.0% | — | 80.3% | 73.7% |
| Arrived on time | 80.6% | — | 81.2% | 73.9% |
| Cancelled | 1.2% | — | 0.9% | 1.3% |
| Average departure delay (late minutes only) | 14.9 min | — | 13.7 min | 19.7 min |
| Scheduled departures a day | 77 | — | 71 | 20,371 |
| Scheduled departures | 2,304 | — | 25,854 | 611,132 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 939 | 41% | 82.7% | 2.8 min | 0.1% |
| F9 Frontier Airlines | 352 | 15% | 66.5% | 22.3 min | 4.8% |
| AA American Airlines | 273 | 12% | 81.3% | 9.2 min | 2.2% |
| OO SkyWest Airlines | 246 | 11% | 85.8% | 9.1 min | 0.0% |
| UA United Airlines | 167 | 7% | 81.4% | 1.8 min | 0.6% |
| DL Delta Air Lines | 147 | 6% | 91.2% | -0.8 min | 0.0% |
| AS Alaska Airlines | 120 | 5% | 79.2% | 6.8 min | 0.8% |
| B6 JetBlue Airways | 30 | 1% | 76.7% | -1.9 min | 3.3% |
| HA Hawaiian Airlines | 30 | 1% | 86.7% | -10.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ONT–PHX | Ontario to Phoenix | 276 | 80.8% | 14.0 min | 0.4% |
| ONT–SEA | Ontario to Seattle | 270 | 80.7% | 6.7 min | 0.4% |
| ONT–DEN | Ontario to Denver | 262 | 80.5% | 3.4 min | 0.4% |
| ONT–LAS | Ontario to Las Vegas | 239 | 73.2% | 16.4 min | 3.3% |
| ONT–DFW | Ontario to Dallas/Fort Worth | 209 | 78.5% | 11.7 min | 2.9% |
| ONT–SMF | Ontario to Sacramento | 142 | 82.4% | 4.4 min | 0.0% |
| ONT–OAK | Ontario to Oakland | 131 | 83.2% | 1.3 min | 0.0% |
| ONT–SLC | Ontario to Salt Lake City | 119 | 89.1% | 3.4 min | 3.4% |
| ONT–SJC | Ontario to San Jose | 115 | 87.8% | 0.4 min | 0.0% |
| ONT–ATL | Ontario to Atlanta | 87 | 92.0% | -6.6 min | 0.0% |
| ONT–SFO | Ontario to San Francisco | 86 | 61.6% | 19.9 min | 2.3% |
| ONT–PDX | Ontario to Portland | 71 | 83.1% | 4.4 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ONT on time in June 2024?
80.0% of 2,304 scheduled domestic departures left less than 15 minutes late, and 80.6% reached their destination on time. The national figures that month were 73.7% and 73.9%.
How does that compare with a year earlier?
June 2023 is outside the 36 months on file, or the airport had too few reported flights that month.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ONT · methodology · corrections.