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Showing Delta only (incl. its regional partners)All airlines ×
2,380 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SEA → ATL flights land within a few points of 85% on time whatever the hour.

Best time to leave 6–7 am 95% arrive on time from SEA
Best single flight DL 569 SEA 06:00 → ATL 13:49 · 95% on time Avoid DL 554 SEA 11:56 → ATL 19:54 · 78% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SEA
93
87
80
77
85
61
78
83
79
81
82
% 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

Pick an hour to see this route’s flights leaving then.

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 569 SEA 06:00 ATL 13:49 95%
DL 652 SEA 23:59 ATL 07:46 89%
DL 560 SEA 16:05 ATL 23:59 87%
DL 567 SEA 21:45 ATL 05:36 84%
DL 562 SEA 07:20 ATL 15:13 83%
· · ·
DL 542 SEA 13:35 ATL 21:40 80%
DL 554 SEA 11:56 ATL 19:54 78%

All 9 Delta flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
DL 569 SEA 06:00 ATL 13:49 4h 49m 364 95% 0.3% 67 min
DL 562 SEA 07:20 ATL 15:13 4h 53m 365 83% 0.8% 149 min
DL 797 SEA 08:40 ATL 16:33 4h 53m 61 69% 1.6% 130 min
DL 554 SEA 11:56 ATL 19:54 4h 58m 302 78% 0.0% 56 min
DL 542 SEA 13:35 ATL 21:40 5h 05m 350 80% 0.6% 83 min
DL 560 SEA 16:05 ATL 23:59 4h 54m 348 87% 0.6% 80 min
DL 567 SEA 21:45 ATL 05:36 4h 51m 190 84% 1.1% 85 min
DL 409 SEA 22:58 ATL 06:45 4h 47m 24 83% 0.0% 35 min
DL 652 SEA 23:59 ATL 07:46 4h 47m 348 89% 0.6% 58 min

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.
Delta SEA ATL 4h 53m 85% 0.6% 2,380 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