About 1 in 6 DL 2479 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.0% were cancelled. The typical flight landed 2 minutes early.
DL 2479: ATL → PWM
Scheduled to leave Atlanta at 10:20 a.m. local time. Over the past year it arrived on time 84% of the time (140 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 21 | 76% |
| Tuesday | 19 | — |
| Wednesday | 19 | — |
| Thursday | 20 | 85% |
| Friday | 20 | 95% |
| Saturday | 20 | 85% |
| Sunday | 21 | 76% |
Why it was late
All flights ATL → PWM · Connecting off DL 2479? Check the risk
DL 2479: PWM → ATL
Scheduled to leave Portland at 1:55 p.m. local time. Over the past year it arrived on time 58% of the time (139 flights), better than other DL flights on the route at that hour (49%). Last seen in the data Aug 31, 2026.
Usually Delta Air Lines's last flight of the day from Portland to Atlanta (60% of days). Delta Air Lines's last PWM–ATL flight was cancelled 1.4% of the time, against 0.8% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 21 | 48% |
| Tuesday | 19 | — |
| Wednesday | 19 | — |
| Thursday | 19 | — |
| Friday | 20 | 50% |
| Saturday | 20 | 65% |
| Sunday | 21 | 52% |
Why it was late
All flights PWM → ATL · Connecting off DL 2479? Check the risk
Questions
How often is DL 2479 from ATL to PWM late?
Delta Air Lines 2479 from Atlanta, GA to Portland, ME arrived 15 or more minutes late, was diverted or was cancelled on 16% of 140 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.
How often is DL 2479 from PWM to ATL late?
Delta Air Lines 2479 from Portland, ME to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 42% of 139 scheduled flights between September 2025 and August 2026. 0.0% 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.