Atlanta (ATL) to Portland (PDX): On-Time Performance
Data through July 2026
Atlanta (ATL) to Portland (PDX) effectively runs on two schedules. In September 2025, 93% of arrivals were on time; in March 2026 that fell to 65% — a 28-point seasonal swing. Across the full period the route averages 78% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 73%), which matters most in the rough months.
- On-time
- 78%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 4.3
- last 12 months
- Duration
- 5h 13m
- scheduled
- Distance
- 2,172 mi
Best airline from ATL to PDX
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 79% | 13 min | 1.0% | 2,671 |
| Alaska Airlines | 72% | 18 min | 0.6% | 517 |
Monthly on-time trend
Best time to fly from ATL to PDX
Aim for departures around 10 a.m. (93% on-time); avoid 5 p.m. departures (61%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 14 min |
| Tuesdaybest | 82% | 11 min |
| Wednesday | 80% | 12 min |
| Thursday | 77% | 13 min |
| Friday | 75% | 17 min |
| Saturday | 78% | 14 min |
| Sunday | 75% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft25%
- Airline operations37%
- National airspace system28%
- Weather9%
Frequently asked questions
- How often are flights from ATL to PDX delayed?
- 22% of ATL–PDX flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- Which airline is most reliable from ATL to PDX?
- Delta Air Lines has the best on-time record on this route at 79%, based on 2,671 flights. 2 airlines flew ATL–PDX frequently enough to compare in this period.
- What is the best time of day to fly from ATL to PDX?
- Departures around 10 a.m. have the best record (93% on-time), while departures around 5 p.m. have the worst (61%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to PDX?
- The scheduled ATL–PDX flight time averages 5h 13m over 2,172 miles. Actual arrival times vary — flights on this route land 15+ minutes late 22% of the time.
- How often are ATL to PDX flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ATL to PDX?
- March 2026 was the roughest month in this dataset, with only 65% of arrivals on time. The best was September 2025 at 93%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 3,190 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.