Route · GSP → ORD · 2020–2025 BTS data
Greer to Chicago
The GSP–ORD corridor (Greer, SC → Chicago, IL) runs ahead of the national average, served by 24 carriers across roughly 577 miles.
Data updated 2026-06-13
- 81.7%
- On-time
- +2.7 pts
- vs US avg
- 77 min
- Delay when late
- 6,603
- Flights
Cancelled
1.9%
Best Month
Feb 2025 91%
Worst Month
Jul 2025 62%
Distance
577 mi
Carriers
24
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 140 | 51 | 6 | 2 | YX,OH,MQ,OO |
| Nov 2025 | 166 | 42 | 16 | 0 | OO,MQ,OH,YX |
| Oct 2025 | 173 | 33 | 0 | 1 | OH,OO,YX,MQ |
| Sep 2025 | 128 | 15 | 2 | 0 | MQ,OH,OO,YX |
| Aug 2025 | 147 | 25 | 6 | 0 | OO,YX,MQ,OH |
| Jul 2025 | 170 | 64 | 2 | 0 | OH,OO,YX,MQ |
| Jun 2025 | 125 | 32 | 2 | 0 | OH,OO,YX,MQ |
| May 2025 | 109 | 21 | 0 | 0 | OO,UA,YX,MQ |
| Apr 2025 | 86 | 13 | 2 | 0 | MQ,OO,UA |
| Mar 2025 | 110 | 23 | 2 | 2 | YX,OO,UA,MQ |
| Feb 2025 | 75 | 7 | 0 | 0 | OO,YX,MQ |
| Jan 2025 | 90 | 9 | 3 | 0 | YX,OO,MQ |
| Dec 2024 | 120 | 29 | 0 | 0 | MQ,OO,YX |
| Nov 2024 | 120 | 22 | 1 | 0 | YX,MQ |
| Oct 2024 | 146 | 27 | 0 | 0 | UA,MQ,YX |
| Sep 2024 | 123 | 21 | 2 | 0 | YX,OO,UA,MQ |
| Aug 2024 | 140 | 41 | 0 | 1 | MQ,YX,OO,UA |
| Jul 2024 | 137 | 39 | 2 | 2 | MQ,OO,YX |
| Jun 2024 | 122 | 37 | 3 | 1 | MQ,OO,YX |
| May 2024 | 145 | 36 | 1 | 0 | MQ,YX,OO,UA |
| Apr 2024 | 116 | 17 | 0 | 0 | MQ,OO |
| Mar 2024 | 94 | 13 | 0 | 0 | MQ,YX,OO,UA |
| Feb 2024 | 87 | 10 | 0 | 0 | MQ,OO,UA |
| Jan 2024 | 92 | 10 | 6 | 1 | MQ,YX,OO |
Cancellation Rate
1.9%
56 of 2,961 flights
Diversion Rate
0.3%
10 of 2,961 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 →ORD - Chicago
Full on-time, delay-cause, and seasonal performance for Chicago, IL.
Destination airport →Compare the two airports
See GSP and ORD 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–ORD.
Routes with a similar on-time rate
What the Data Says About GSP to ORD
6,603 tracked flights put the GSP to ORD pairing (Greer to Chicago) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 76.6 minutes on average. Across the 577-mile route and its 24 carriers, the trailing 24 months show 1.9% cancelled and 0.3% diverted (2,961 flights sampled).
The monthly split is wide on this route: Feb 2025 posted the strongest performance at 91% on-time, while Jul 2025 came in at just 62% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from GSP to ORD? ▼
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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.