Route · DTW → SAN · 2020–2025 BTS data
Detroit to San Diego
The DTW–SAN corridor (Detroit, MI → San Diego, CA) runs ahead of the national average, served by 3 carriers across roughly 1,956 miles.
Data updated 2026-06-13
- 81.9%
- On-time
- +2.9 pts
- vs US avg
- 62 min
- Delay when late
- 5,989
- Flights
Cancelled
0.7%
Best Month
Sep 2024 86%
Worst Month
Dec 2025 64%
Distance
1,956 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 112 | 40 | 3 | 0 | DL |
| Nov 2025 | 107 | 30 | 0 | 1 | DL |
| Oct 2025 | 118 | 18 | 0 | 0 | DL,NK |
| Sep 2025 | 119 | 23 | 2 | 3 | DL,NK |
| Aug 2025 | 131 | 24 | 1 | 0 | NK,DL |
| Jul 2025 | 133 | 40 | 2 | 0 | DL,NK |
| Jun 2025 | 124 | 32 | 0 | 0 | DL,NK |
| May 2025 | 109 | 18 | 0 | 1 | DL |
| Apr 2025 | 102 | 22 | 1 | 0 | DL |
| Mar 2025 | 89 | 15 | 0 | 1 | DL |
| Feb 2025 | 70 | 22 | 0 | 1 | DL |
| Jan 2025 | 77 | 15 | 0 | 0 | DL |
| Dec 2024 | 112 | 25 | 2 | 2 | DL |
| Nov 2024 | 103 | 15 | 0 | 0 | DL |
| Oct 2024 | 111 | 17 | 1 | 1 | DL |
| Sep 2024 | 103 | 14 | 0 | 0 | DL |
| Aug 2024 | 113 | 34 | 0 | 0 | DL |
| Jul 2024 | 113 | 31 | 6 | 0 | DL |
| Jun 2024 | 111 | 39 | 0 | 0 | DL |
| May 2024 | 110 | 30 | 0 | 0 | DL |
| Apr 2024 | 99 | 17 | 0 | 0 | DL |
| Mar 2024 | 84 | 16 | 0 | 1 | DL |
| Feb 2024 | 58 | 8 | 0 | 1 | DL |
| Jan 2024 | 64 | 11 | 0 | 1 | DL |
Cancellation Rate
0.7%
18 of 2,472 flights
Diversion Rate
0.5%
13 of 2,472 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Origin airport →SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
Destination airport →Compare the two airports
See DTW 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 DTW–SAN.
Routes with a similar on-time rate
What the Data Says About DTW to SAN
5,989 tracked flights put the DTW to SAN pairing (Detroit to San Diego) at a 81.9% on-time rate, squarely in line with the wider network. Delays that do occur run 62.4 minutes on average. Across the 1,956-mile route and its 3 carriers, the trailing 24 months show 0.7% cancelled and 0.5% diverted (2,472 flights sampled).
The monthly split is wide on this route: Sep 2024 posted the strongest performance at 86% on-time, while Dec 2025 came in at just 64% - a 22-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DTW to SAN? ▼
What is the cancellation rate for DTW to SAN? ▼
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Flight Guides
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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.