Route · SAN → DTW · 2020–2025 BTS data
San Diego to Detroit
The SAN–DTW corridor (San Diego, CA → Detroit, MI) runs ahead of the national average, served by 3 carriers across roughly 1,956 miles.
Data updated 2026-06-13
- 86.9%
- On-time
- +7.9 pts
- vs US avg
- 70 min
- Delay when late
- 5,986
- Flights
Cancelled
0.8%
Best Month
May 2024 94%
Worst Month
Jan 2024 72%
Distance
1,956 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 112 | 14 | 3 | 0 | DL |
| Nov 2025 | 107 | 17 | 0 | 0 | DL |
| Oct 2025 | 118 | 8 | 0 | 0 | DL,NK |
| Sep 2025 | 119 | 16 | 2 | 0 | DL,NK |
| Aug 2025 | 131 | 27 | 2 | 0 | NK,DL |
| Jul 2025 | 133 | 26 | 1 | 0 | DL,NK |
| Jun 2025 | 124 | 21 | 0 | 0 | DL,NK |
| May 2025 | 109 | 18 | 0 | 0 | DL |
| Apr 2025 | 102 | 8 | 1 | 0 | DL |
| Mar 2025 | 89 | 16 | 0 | 0 | DL |
| Feb 2025 | 70 | 12 | 0 | 1 | DL |
| Jan 2025 | 77 | 13 | 0 | 0 | DL |
| Dec 2024 | 112 | 26 | 2 | 0 | DL |
| Nov 2024 | 103 | 7 | 0 | 0 | DL |
| Oct 2024 | 111 | 21 | 1 | 0 | DL |
| Sep 2024 | 103 | 12 | 0 | 0 | DL |
| Aug 2024 | 113 | 18 | 0 | 1 | DL |
| Jul 2024 | 113 | 27 | 7 | 0 | DL |
| Jun 2024 | 111 | 31 | 0 | 1 | DL |
| May 2024 | 110 | 7 | 0 | 1 | DL |
| Apr 2024 | 99 | 7 | 0 | 0 | DL |
| Mar 2024 | 85 | 8 | 0 | 0 | DL |
| Feb 2024 | 58 | 6 | 0 | 0 | DL |
| Jan 2024 | 64 | 18 | 0 | 0 | DL |
Cancellation Rate
0.8%
19 of 2,473 flights
Diversion Rate
0.2%
4 of 2,473 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SAN - San Diego
Full on-time, delay-cause, and seasonal performance for San Diego, CA.
Origin airport →DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Destination airport →Compare the two airports
See SAN and DTW side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SAN–DTW.
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What the Data Says About SAN to DTW
San Diego to Detroit (SAN to DTW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.9% on-time rate across 5,986 flights, with delays that do happen averaging 70.3 minutes. The corridor runs roughly 1,956 miles and is served by 3 carriers. Over the most recent 24 months, 19 of 2,473 flights were cancelled (0.8%) and 4 diverted (0.2%).
The monthly split is wide on this route: May 2024 posted the strongest performance at 94% on-time, while Jan 2024 came in at just 72% - a 22-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from SAN to DTW? ▼
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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.