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Route · GPT → IAH · 2020–2025 BTS data

Gulfport/Biloxi to Houston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GPT to IAH (Gulfport/Biloxi to Houston) ranks #4760 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

91.6%
On-time
+12.6 pts
vs US avg
73 min
Delay when late
653
Flights
#4760 of 4927
Corpus placement

Cancelled

5.7%

Best Month

Sep 2020 98%

Worst Month

Feb 2020 87%

Distance

376 mi

Carriers

2

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Oct 2020 62 7 1 1 OO
Sep 2020 57 1 3 0 EV
Aug 2020 60 6 4 0 EV
Jul 2020 53 4 0 0 EV
Jun 2020 45 6 1 0 EV
May 2020 59 2 2 1 EV
Apr 2020 36 1 4 0 EV
Mar 2020 88 7 17 0 EV
Feb 2020 101 13 2 0 EV
Jan 2020 92 8 3 1 EV

GPT–IAH seasonal on-time pattern

Best: September (98.2%) · weakest: June (86.7%)

85%90%95%100% JanFebMarAprMayJunJulAugSepOct 88.7%

Strongest calendar month

September

98.2% on-time · ~57 flights/mo

Busiest calendar month

February

~101 flights/mo avg

Weakest calendar month

June

86.7% on-time · ~45 flights/mo

Cancellation Rate

5.7%

37 of 653 flights

Diversion Rate

0.5%

3 of 653 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

GPT - Gulfport/Biloxi

Full on-time, delay-cause, and seasonal performance for Gulfport/Biloxi, MS.

GPT on-time profile

IAH - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

IAH on-time profile

Compare the two airports

See GPT and IAH side by side on delays, cancellations, and reliability.

Compare GPT vs IAH

Origin-hub reliability standing

Among GPT's stronger departures

GPT → IAH posts a 91.6% on-time rate, landing in the ≥85% band with 3 of 4 BTS-tracked routes leaving Gulfport/Biloxi. The same hub also shows 1 mid-band and 0 challenged departures · fleet-wide on-time rank #61 of 4927 (highest on-time = #1).

What the Data Says About GPT to IAH

Gulfport/Biloxi to Houston (GPT to IAH) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 91.6% on-time rate across 653 flights, with delays that do happen averaging 73.0 minutes. The corridor runs roughly 376 miles and is served by 2 carriers. Over the most recent 24 months, 37 of 653 flights were cancelled (5.7%) and 3 diverted (0.5%).

Monthly performance varies moderately here: Sep 2020 was the strongest month at 98% on-time versus Feb 2020 at 87%, a 11-point difference.

On the multi-year calendar, GPT–IAH peaks in September at 98.2% on-time while February carries the heaviest traffic (~101 flights per month) ; the softest month is June at 86.7%, a 11.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GPT to IAH rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GPT to IAH ranks #4760 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from GPT to IAH? ▼
Flights from Gulfport/Biloxi to Houston have a 91.6% on-time rate based on 653 flights. The average delay is 73.0 minutes. The best recent month was Sep 2020 with 98% on-time.
What is the cancellation rate for GPT to IAH? ▼
Over the last 24 months, 5.7% of flights on this route were cancelled (37 of 653 flights) and 0.5% were diverted.
How far is the flight from GPT to IAH? ▼
The flight distance from Gulfport/Biloxi (GPT) to Houston (IAH) is approximately 376 miles. This route is served by 2 carriers.
When is the best time to fly from GPT to IAH? ▼
The best recent month for on-time performance was Sep 2020 (98% on-time). The worst was Feb 2020 (87% on-time). Consider booking during months with historically better performance.

Airports on this route

GPT Airport

Gulfport/Biloxi
IAH Airport

Houston
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.

Using GPT–IAH data

GPT–IAH runs 12.6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare GPT and IAH airport profiles: delay causes and top routes differ even on the same corridor. GPT airport
  • If your dates flex, September (98.2% on-time) beats June (86.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 91.6% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.