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1,552 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 4 in 5.

Best time to leave 10–11 am 95% arrive on time from ATL
Best single flight DL 539 ATL 08:30 → PDX 10:30 · 84% on time Avoid DL 503 ATL 16:52 → PDX 18:56 · 74% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

8
9
10
11
12
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14
15
16
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18
19
ATL
91
97
90
86
77
70
80
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
Portland flights leaving ATL 4–5 pm: 1Close ×
DL 503 ATL 16:52 PDX 18:56 5h 04m 351 74% 0.6% 60 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Alaska 286 83% 0.7% 74 min
Delta 1,264 80% 0.9% 51 min
American 1 – 0.0% –
Southwest 1 – 0.0% –

Dimmed: fewer than 150 flights in the year, too few to rank.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
DL 539 ATL 08:30 PDX 10:30 84%
AS 783 ATL 18:00 PDX 20:24 83%
DL 478 ATL 19:45 PDX 21:46 74%
DL 503 ATL 16:52 PDX 18:56 74%
All 6 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Alaska ATL PDX 5h 24m 83% 0.7% 286 Flying now
Delta ATL PDX 5h 01m 80% 0.9% 1,264 Flying now
American ATL PDX – 100%few flights 0.0% 1 Not flying now
Southwest ATL PDX – 100%few flights 0.0% 1 Not flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON