Gulfport/Biloxi (GPT) to Atlanta (ATL): On-Time Performance
Data through July 2026
Gulfport/Biloxi (GPT) to Atlanta (ATL) effectively runs on two schedules. In October 2024, 97% of arrivals were on time; in June 2025 that fell to 72% — a 26-point seasonal swing. Across the full period the route averages 87% on-time against a national 78%. Morning departures also hold up better than evening ones (91% vs 80%), which matters most in the rough months.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 3.6
- last 12 months
- Duration
- 1h 26m
- scheduled
- Distance
- 352 mi
Monthly on-time trend
Best time to fly from GPT to ATL
Aim for departures around 12 p.m. (95% on-time); avoid 7 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 89% | 14 min |
| Tuesdaybest | 91% | 14 min |
| Wednesday | 89% | 10 min |
| Thursday | 89% | 11 min |
| Friday | 85% | 17 min |
| Saturday | 87% | 11 min |
| Sunday | 81% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft41%
- Airline operations44%
- National airspace system11%
- Weather4%
Frequently asked questions
- How often are flights from GPT to ATL delayed?
- 13% of GPT–ATL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- What is the best time of day to fly from GPT to ATL?
- Departures around 12 p.m. have the best record (95% on-time), while departures around 7 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from GPT to ATL?
- The scheduled GPT–ATL flight time averages 1h 26m over 352 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are GPT to ATL flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from GPT to ATL?
- June 2025 was the roughest month in this dataset, with only 72% of arrivals on time. The best was October 2024 at 97%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 2,744 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.