Route · PDX → ONT · 2020–2025 BTS data
Portland to Ontario
The PDX–ONT corridor (Portland, OR → Ontario, CA) runs ahead of the national average, served by 25 carriers across roughly 838 miles.
Data updated 2026-06-13
- 87.3%
- On-time
- +8.3 pts
- vs US avg
- 64 min
- Delay when late
- 2,522
- Flights
Cancelled
1.9%
Best Month
Mar 2025 98%
Worst Month
Aug 2024 79%
Distance
838 mi
Carriers
25
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 45 | 14 | 0 | 0 | F9,AS |
| Nov 2025 | 67 | 9 | 1 | 0 | F9,AS |
| Oct 2025 | 44 | 4 | 1 | 0 | AS,OO,F9 |
| Sep 2025 | 60 | 9 | 0 | 0 | OO,F9,AS |
| Aug 2025 | 40 | 10 | 0 | 0 | OO,F9,AS |
| Apr 2025 | 41 | 5 | 0 | 0 | OO,AS |
| Mar 2025 | 55 | 1 | 0 | 0 | AS,OO |
| Feb 2025 | 58 | 7 | 4 | 0 | AS,OO,F9 |
| Jan 2025 | 86 | 12 | 2 | 1 | AS,OO,WN,F9 |
| Dec 2024 | 52 | 6 | 0 | 0 | AS,F9,WN |
| Nov 2024 | 58 | 10 | 0 | 0 | WN,AS,F9 |
| Oct 2024 | 69 | 7 | 0 | 0 | AS,F9 |
| Sep 2024 | 58 | 11 | 0 | 0 | WN,AS,F9 |
| Aug 2024 | 84 | 18 | 1 | 0 | AS,F9,WN,OO |
| Jul 2024 | 67 | 10 | 2 | 0 | F9,OO,WN |
| Jun 2024 | 70 | 12 | 2 | 1 | F9,OO,WN |
| May 2024 | 84 | 7 | 1 | 0 | F9,OO,WN |
| Apr 2024 | 89 | 11 | 0 | 0 | F9,OO,WN |
| Mar 2024 | 54 | 4 | 0 | 0 | OO,WN |
| Jan 2024 | 32 | 5 | 11 | 0 | AS,WN,OO |
| Dec 2023 | 33 | 7 | 0 | 0 | OO,WN,AS |
| Nov 2023 | 34 | 5 | 0 | 0 | AS,OO,WN |
| Oct 2023 | 35 | 3 | 0 | 0 | AS,WN |
| May 2023 | 31 | 6 | 0 | 0 | AS |
Cancellation Rate
1.9%
25 of 1,346 flights
Diversion Rate
0.1%
2 of 1,346 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PDX - Portland
Full on-time, delay-cause, and seasonal performance for Portland, OR.
Origin airport →ONT - Ontario
Full on-time, delay-cause, and seasonal performance for Ontario, CA.
Destination airport →Compare the two airports
See PDX 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 PDX–ONT.
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What the Data Says About PDX to ONT
Portland to Ontario (PDX to ONT) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.3% on-time rate across 2,522 flights, with delays that do happen averaging 63.9 minutes. The corridor runs roughly 838 miles and is served by 25 carriers. Over the most recent 24 months, 25 of 1,346 flights were cancelled (1.9%) and 2 diverted (0.1%).
The monthly split is wide on this route: Mar 2025 posted the strongest performance at 98% on-time, while Aug 2024 came in at just 79% - a 20-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.