Route · OAK → ONT · 2020–2025 BTS data
Oakland to Ontario
The OAK–ONT corridor (Oakland, CA → Ontario, CA) runs ahead of the national average, served by 1 carrier across roughly 362 miles.
Data updated 2026-06-13
- 86.7%
- On-time
- +7.7 pts
- vs US avg
- 56 min
- Delay when late
- 9,137
- Flights
Cancelled
0.5%
Best Month
Feb 2025 94%
Worst Month
May 2024 77%
Distance
362 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 121 | 27 | 0 | 0 | WN |
| Nov 2025 | 130 | 20 | 4 | 1 | WN |
| Oct 2025 | 136 | 25 | 0 | 0 | WN |
| Sep 2025 | 133 | 17 | 0 | 0 | WN |
| Aug 2025 | 135 | 17 | 0 | 0 | WN |
| Jul 2025 | 134 | 19 | 0 | 0 | WN |
| Jun 2025 | 135 | 21 | 0 | 0 | WN |
| May 2025 | 146 | 17 | 2 | 0 | WN |
| Apr 2025 | 132 | 20 | 0 | 0 | WN |
| Mar 2025 | 136 | 17 | 0 | 0 | WN |
| Feb 2025 | 116 | 7 | 0 | 0 | WN |
| Jan 2025 | 120 | 9 | 2 | 0 | WN |
| Dec 2024 | 126 | 20 | 0 | 0 | WN |
| Nov 2024 | 130 | 10 | 1 | 0 | WN |
| Oct 2024 | 135 | 12 | 0 | 0 | WN |
| Sep 2024 | 132 | 13 | 1 | 0 | WN |
| Aug 2024 | 137 | 16 | 0 | 0 | WN |
| Jul 2024 | 133 | 24 | 1 | 0 | WN |
| Jun 2024 | 131 | 20 | 1 | 0 | WN |
| May 2024 | 132 | 31 | 0 | 0 | WN |
| Apr 2024 | 129 | 18 | 1 | 0 | WN |
| Mar 2024 | 130 | 20 | 1 | 0 | WN |
| Feb 2024 | 112 | 21 | 2 | 0 | WN |
| Jan 2024 | 127 | 17 | 0 | 0 | WN |
Cancellation Rate
0.5%
16 of 3,128 flights
Diversion Rate
0.0%
1 of 3,128 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
OAK - Oakland
Full on-time, delay-cause, and seasonal performance for Oakland, CA.
Origin airport →ONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
Destination airport →Compare the two airports
See OAK and ONT side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to OAK–ONT.
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What the Data Says About OAK to ONT
Oakland to Ontario (OAK to ONT) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.7% on-time rate across 9,137 flights, with delays that do happen averaging 55.8 minutes. The corridor runs roughly 362 miles and is served by 1 carrier. Over the most recent 24 months, 16 of 3,128 flights were cancelled (0.5%) and 1 diverted (0.0%).
The monthly split is wide on this route: Feb 2025 posted the strongest performance at 94% on-time, while May 2024 came in at just 77% - a 18-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.