Route · PDX → SAN · 2020–2025 BTS data
Portland to San Diego
The PDX–SAN corridor (Portland, OR → San Diego, CA) runs ahead of the national average, served by 16 carriers across roughly 933 miles.
Data updated 2026-06-13
- 84.8%
- On-time
- +5.8 pts
- vs US avg
- 57 min
- Delay when late
- 9,197
- Flights
Cancelled
1.8%
Best Month
May 2025 91%
Worst Month
Dec 2025 68%
Distance
933 mi
Carriers
16
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 157 | 50 | 2 | 0 | WN,AS |
| Nov 2025 | 145 | 45 | 0 | 0 | AS,WN |
| Oct 2025 | 143 | 38 | 1 | 1 | AS,WN |
| Sep 2025 | 130 | 17 | 1 | 0 | AS |
| Aug 2025 | 147 | 35 | 2 | 0 | WN,AS |
| Jul 2025 | 157 | 26 | 2 | 0 | AS,WN |
| Jun 2025 | 165 | 30 | 0 | 0 | AS,OO,WN |
| May 2025 | 161 | 14 | 0 | 0 | AS,OO |
| Apr 2025 | 135 | 17 | 1 | 0 | AS |
| Mar 2025 | 126 | 24 | 2 | 1 | AS |
| Feb 2025 | 100 | 23 | 4 | 0 | AS |
| Jan 2025 | 117 | 19 | 2 | 1 | AS,WN |
| Dec 2024 | 162 | 39 | 3 | 4 | AS,OO,WN |
| Nov 2024 | 157 | 36 | 2 | 0 | WN,AS |
| Oct 2024 | 151 | 43 | 4 | 0 | AS,NK,OO,WN |
| Sep 2024 | 165 | 29 | 0 | 0 | WN,AS,NK |
| Aug 2024 | 182 | 33 | 2 | 0 | AS,NK,WN,OO |
| Jul 2024 | 170 | 37 | 2 | 0 | AS,NK,OO,WN |
| Jun 2024 | 165 | 30 | 2 | 0 | AS,NK,OO,WN |
| May 2024 | 114 | 13 | 0 | 0 | AS,OO,WN |
| Apr 2024 | 112 | 23 | 1 | 0 | AS,OO,WN |
| Mar 2024 | 119 | 18 | 0 | 1 | AS,OO,WN |
| Feb 2024 | 114 | 21 | 1 | 1 | AS,OO,WN |
| Jan 2024 | 135 | 22 | 27 | 0 | AS,WN,OO |
Cancellation Rate
1.8%
61 of 3,429 flights
Diversion Rate
0.3%
9 of 3,429 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 →SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
Destination airport →Compare the two airports
See PDX and SAN 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–SAN.
Routes with a similar on-time rate
What the Data Says About PDX to SAN
Bureau of Transportation Statistics records show Portland to San Diego (PDX to SAN) running a 84.8% on-time rate over 9,197 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 57.2 minutes. The 933-mile corridor is served by 16 carriers, and over the last 24 months 1.8% of 3,429 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: May 2025 posted the strongest performance at 91% on-time, while Dec 2025 came in at just 68% - a 23-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.