PlainFlights

IAH vs GPT - 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
IAH

Houston, TX

Houston, Texas

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Airport B
GPT

Gulfport/Biloxi, MS

Gulfport/Biloxi, Mississippi

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Key Performance Metrics

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

Metric IAH GPT
On-Time Rate (higher is better) 81.6% 86.0%
Avg Delay (lower is better) 79.8 min 83.3 min
Delay Rate (lower is better) 18.4% 14.0%
Cancellation Rate (lower is better) 1.13% 1.24%
Total Flights 1,404,392 38,923
Delayed Flights 258,419 5,458
Cancelled Flights 15,858 484
Top Delay Cause Carrier Carrier

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

Delay Cause Breakdown

IAH - Houston, TX

Carrier 38.4%
Late Aircraft 34.9%
NAS 18.1%
Weather 8.6%
Security 0.0%

GPT - Gulfport/Biloxi, MS

Carrier 40.2%
Late Aircraft 35.1%
NAS 13.3%
Weather 11.4%
Security 0.1%

Top Routes

Top routes from IAH

Route Flights On-Time
IAH → DFW
Dallas/Fort Worth
30,197 76.6%
DFW → IAH
Houston
30,188 76.3%
IAH → LAX
Los Angeles
28,113 83.4%
LAX → IAH
Houston
28,102 86.2%
IAH → DEN
Denver
27,947 80%
IAH → ORD
Chicago
27,946 81%

Top routes from GPT

Route Flights On-Time
ATL → GPT
Gulfport/Biloxi
7,626 88.1%
GPT → ATL
Atlanta
7,624 89.3%
GPT → DFW
Dallas/Fort Worth
5,915 81.9%
DFW → GPT
Gulfport/Biloxi
5,914 82.1%
CLT → GPT
Gulfport/Biloxi
5,046 81.6%
GPT → CLT
Charlotte
5,045 85.3%

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.