GPT to ATL flight delays & on-time performance
Nonstop flights from Gulfport Biloxi International Airport to Hartsfield Jackson Atlanta International Airport · 352 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at GPT or ATL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Gulfport/Biloxi (GPT) to Atlanta (ATL) arrived on time 87% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.6% were cancelled, and 6% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (100% on time); around 1pm did worst (79%).
- Wednesday was the most reliable day to fly (92% on time) and Sunday the least (82%).
- The largest source of delay minutes was late-arriving aircraft (46%).
Which airline is most on time from GPT to ATL?
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 | 87% | 1.6% | 13 min | 6.3% | 1,317 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am93%365 flights
- 9am100%44 flights
- 10am89%280 flights
- 11am88%26 flights
- 1pm79%76 flights
- 2pm86%164 flights
- 3pm90%72 flights
- 4pm79%19 flights
- 5pm79%122 flights
- 6pm80%147 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday86%3.0% cancelled
- Tuesday91%1.1% cancelled
- Wednesday92%0.0% cancelled
- Thursday88%0.5% cancelled
- Friday87%1.5% cancelled
- Saturday85%1.9% cancelled
- Sunday82%3.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft46%
- Airline (crew, maintenance, cleaning, fueling)38%
- Air traffic control & airport congestion12%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)71%
- Extreme weather29%
- Air traffic control & airport congestion0%
- Security0%
GPT to ATL: common questions
- How often are GPT to ATL flights on time?
- 87% 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 Gulfport/Biloxi to Atlanta 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 13 min (early arrivals count as zero). Flights that were late arrived 101 min behind schedule on average, and 6.3% of flights were an hour or more late.
- How long is taxi time at GPT?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ATL to GPT — 83% on time
More flights from Gulfport/Biloxi
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: GPT → ATL, nonstop flights by US airlines that report to the DOT. How we calculate this.