ATL to GPT flight delays & on-time performance
Nonstop flights from Hartsfield Jackson Atlanta International Airport to Gulfport Biloxi International Airport · 352 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ATL or GPT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Atlanta (ATL) to Gulfport/Biloxi (GPT) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.6% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (97% on time); around 4pm did worst (74%).
- Tuesday was the most reliable day to fly (90% on time) and Sunday the least (78%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (53%).
Which airline is most on time from ATL to GPT?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 83% | 1.6% | 12 min | 6.5% | 1,317 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am97%92 flights
- 9am88%255 flights
- 12pm88%76 flights
- 1pm82%208 flights
- 2pm81%47 flights
- 3pm85%20 flights
- 4pm74%230 flights
- 5pm79%19 flights
- 9pm84%353 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%1.5% cancelled
- Tuesday90%1.1% cancelled
- Wednesday89%0.0% cancelled
- Thursday80%1.0% cancelled
- Friday81%0.5% cancelled
- Saturday84%2.6% cancelled
- Sunday78%4.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)53%
- Late-arriving aircraft29%
- Air traffic control & airport congestion11%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)67%
- Extreme weather33%
- Air traffic control & airport congestion0%
- Security0%
ATL to GPT: common questions
- How often are ATL to GPT flights on time?
- 83% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Atlanta to Gulfport/Biloxi cancelled?
- 1.6% of scheduled flights were cancelled (21 of 1,317).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 6.5% of flights were an hour or more late.
- How long is taxi time at ATL?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: GPT to ATL — 87% on time
More flights from Atlanta
More flights to Gulfport/Biloxi
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ATL → GPT, nonstop flights by US airlines that report to the DOT. How we calculate this.