Route · GSP → DTW · 2020–2025 BTS data
Greer to Detroit
The GSP–DTW corridor (Greer, SC → Detroit, MI) runs ahead of the national average, served by 13 carriers across roughly 508 miles.
Data updated 2026-06-13
- 89.8%
- On-time
- +10.8 pts
- vs US avg
- 112 min
- Delay when late
- 2,871
- Flights
Cancelled
1.0%
Best Month
Jul 2023 96%
Worst Month
Jul 2024 76%
Distance
508 mi
Carriers
13
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 57 | 7 | 2 | 0 | DL,OO |
| Nov 2025 | 47 | 8 | 4 | 0 | OO,DL |
| Oct 2025 | 36 | 0 | 0 | 0 | DL,OO |
| Sep 2025 | 52 | 5 | 0 | 0 | OO,DL |
| Aug 2025 | 65 | 6 | 0 | 0 | OO,DL |
| Jul 2025 | 80 | 15 | 1 | 1 | DL,OO |
| Jun 2025 | 74 | 15 | 0 | 0 | DL,OO |
| May 2025 | 51 | 8 | 0 | 0 | OO,DL |
| Dec 2024 | 75 | 4 | 0 | 1 | 9E,OO |
| Nov 2024 | 75 | 7 | 0 | 0 | 9E |
| Oct 2024 | 73 | 4 | 0 | 0 | OO,9E |
| Sep 2024 | 67 | 11 | 1 | 0 | OO,9E,DL |
| Aug 2024 | 72 | 16 | 0 | 0 | DL,9E,OO |
| Jul 2024 | 68 | 16 | 5 | 0 | 9E,DL,OO |
| Jun 2024 | 67 | 13 | 0 | 1 | 9E,DL,OO |
| May 2024 | 57 | 3 | 0 | 0 | 9E,DL,OO |
| Apr 2024 | 48 | 1 | 0 | 0 | 9E,DL,OO |
| Nov 2023 | 45 | 2 | 0 | 0 | 9E,DL,OO |
| Oct 2023 | 50 | 2 | 0 | 0 | 9E,DL,OO |
| Sep 2023 | 54 | 4 | 0 | 0 | 9E,DL,OO |
| Aug 2023 | 58 | 7 | 0 | 0 | 9E,DL,OO |
| Jul 2023 | 52 | 2 | 0 | 0 | 9E,DL,OO |
| Jun 2023 | 56 | 4 | 0 | 0 | 9E,DL,OO |
| May 2023 | 50 | 2 | 1 | 0 | DL,OO |
Cancellation Rate
1.0%
14 of 1,429 flights
Diversion Rate
0.2%
3 of 1,429 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
GSP - Greer
Full on-time, delay-cause, and seasonal performance for Greer, SC.
Origin airport →DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Destination airport →Compare the two airports
See GSP 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 GSP–DTW.
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What the Data Says About GSP to DTW
Greer to Detroit (GSP to DTW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 89.8% on-time rate across 2,871 flights, with delays that do happen averaging 111.5 minutes. The corridor runs roughly 508 miles and is served by 13 carriers. Over the most recent 24 months, 14 of 1,429 flights were cancelled (1.0%) and 3 diverted (0.2%).
The monthly split is wide on this route: Jul 2023 posted the strongest performance at 96% on-time, while Jul 2024 came in at just 76% - 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.