Atlanta (ATL) to Gulfport/Biloxi (GPT): On-Time Performance
Data through May 2026
When you fly ATL to GPT matters as much as anything else about the booking: the route swung from 98% on-time in November 2024 to just 65% in June 2025. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 79%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 3.6
- last 12 months
- Duration
- 1h 22m
- scheduled
- Distance
- 352 mi
Monthly on-time trend
Best time to fly from ATL to GPT
Aim for departures around 8 a.m. (94% on-time); avoid 10 p.m. departures (73%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 12 min |
| Tuesdaybest | 87% | 9 min |
| Wednesday | 85% | 10 min |
| Thursday | 82% | 12 min |
| Friday | 83% | 12 min |
| Saturday | 83% | 13 min |
| Sunday | 76% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations54%
- National airspace system10%
- Weather4%
Frequently asked questions
- How often are flights from ATL to GPT delayed?
- 17% of ATL–GPT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 13 minutes.
- What is the best time of day to fly from ATL to GPT?
- Departures around 8 a.m. have the best record (94% on-time), while departures around 10 p.m. have the worst (73%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to GPT?
- The scheduled ATL–GPT flight time averages 1h 22m over 352 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are ATL to GPT flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from ATL to GPT?
- June 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was November 2024 at 98%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 2,622 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.