PlainFlights

ORD vs GSP - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
ORD

Chicago, IL

Chicago, Illinois

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Airport B
GSP

Greer, SC

Greer, South Carolina

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric ORD GSP
On-Time Rate (higher is better) 81.0% 83.5%
Avg Delay (lower is better) 81.9 min 77.4 min
Delay Rate (lower is better) 19.0% 16.5%
Cancellation Rate (lower is better) 1.16% 1.12%
Total Flights 3,114,086 155,526
Delayed Flights 592,111 25,645
Cancelled Flights 36,132 1,749
Top Delay Cause Late Aircraft Late Aircraft

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

ORD - Chicago, IL

Late Aircraft 39.2%
Carrier 33.6%
NAS 19.5%
Weather 7.7%
Security 0.1%

GSP - Greer, SC

Late Aircraft 40.8%
Carrier 34.1%
NAS 19.6%
Weather 5.3%
Security 0.1%

Top Routes

Top routes from ORD

Route Flights On-Time
ORD → LGA
New York
56,539 78.2%
LGA → ORD
Chicago
56,521 80.8%
ORD → LAX
Los Angeles
37,020 79.8%
LAX → ORD
Chicago
36,987 84.3%
ORD → DEN
Denver
35,971 79.3%
DEN → ORD
Chicago
35,925 76.8%

Top routes from GSP

Route Flights On-Time
GSP → ATL
Atlanta
18,285 91.8%
ATL → GSP
Greer
18,284 86.7%
GSP → CLT
Charlotte
14,768 82.2%
CLT → GSP
Greer
14,762 80.6%
GSP → ORD
Chicago
6,603 81.7%
ORD → GSP
Greer
6,594 79.6%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.