Portland (PWM) to Atlanta (ATL): On-Time Performance
Data through May 2026
When you fly PWM to ATL matters as much as anything else about the booking: the route swung from 97% on-time in April 2026 to just 61% in June 2025. Across the full period the route averages 80% on-time against a national 78%.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 1.8
- last 12 months
- Duration
- 3h 0m
- scheduled
- Distance
- 1,027 mi
Monthly on-time trend
Best time to fly from PWM to ATL
Aim for departures around 6 a.m. (89% on-time); avoid 6 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 10 min |
| Tuesday | 80% | 16 min |
| Wednesday | 82% | 11 min |
| Thursday | 81% | 12 min |
| Fridaybest | 87% | 12 min |
| Saturday | 77% | 32 min |
| Sunday | 77% | 14 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft18%
- Airline operations63%
- National airspace system15%
- Weather4%
Frequently asked questions
- How often are flights from PWM to ATL delayed?
- 20% of PWM–ATL 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 15 minutes.
- What is the best time of day to fly from PWM to ATL?
- Departures around 6 a.m. have the best record (89% on-time), while departures around 6 p.m. have the worst (52%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PWM to ATL?
- The scheduled PWM–ATL flight time averages 3h 0m over 1,027 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are PWM to ATL flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from PWM to ATL?
- June 2025 was the roughest month in this dataset, with only 61% of arrivals on time. The best was April 2026 at 97%. If your dates are flexible, that 36-point gap is worth planning around.
Explore related pages
More routes from PWM
Other ways to fly to Atlanta (ATL)
Related guides
Based on 1,173 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.