About 1 in 11 DL 3155 flights from Gulfport arrived 15+ minutes late, diverted or cancelled over the past year (9%); 2.0% were cancelled. The typical flight landed 10 minutes early.
DL 3155: GPT → ATL
Scheduled to leave Gulfport at 6:00 a.m. local time. Over the past year it arrived on time 91% of the time (255 flights), in line with other DL flights on the route at that hour (91%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 37 | 89% |
| Tuesday | 36 | 97% |
| Wednesday | 36 | 92% |
| Thursday | 36 | 92% |
| Friday | 36 | 89% |
| Saturday | 37 | 89% |
| Sunday | 37 | 89% |
Why it was late
All flights GPT → ATL · Connecting off DL 3155? Check the risk
Questions
How often is DL 3155 from GPT to ATL late?
Delta Air Lines 3155 from Gulfport/Biloxi, MS to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 9% of 255 scheduled flights between September 2025 and August 2026. 2.0% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.