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3,278 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 87% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 6–7 am 92% arrive on time from ATL
Best single flight AS 377 ATL 07:00 → SEA 09:26 · 86% on time Avoid DL 714 ATL 18:25 → SEA 20:49 · 67% 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
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ATL
88
87
88
87
85
85
88
83
92
78
78
72
79
78
% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta 2,380 78% 0.5% 57 min
Alaska 898 75% 1.0% 56 min

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.
AS 377 ATL 07:00 SEA 09:26 86%
DL 774 ATL 09:52 SEA 12:20 84%
DL 629 ATL 12:35 SEA 14:55 82%
DL 444 ATL 07:40 SEA 10:00 82%
DL 481 ATL 14:32 SEA 16:49 80%
· · ·
DL 903 ATL 21:35 SEA 23:59 79%
DL 472 ATL 16:45 SEA 19:04 70%
DL 714 ATL 18:25 SEA 20:49 67%

All 14 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.
AS 377 ATL 07:00 SEA 09:26 5h 26m 307 86% 0.3% 79 min
DL 444 ATL 07:40 SEA 10:00 5h 20m 363 82% 1.7% 52 min
AS 348 ATL 08:54 SEA 11:20 5h 26m 129 69% 1.6% 56 min
AS 457 ATL 09:00 SEA 11:31 5h 31m 27 93% 0.0% 114 min
DL 774 ATL 09:52 SEA 12:20 5h 30m 365 84% 0.0% 50 min
DL 648 ATL 11:10 SEA 13:38 5h 28m 121 87% 0.0% 66 min
DL 629 ATL 12:35 SEA 14:55 5h 20m 365 82% 0.5% 49 min
DL 481 ATL 14:32 SEA 16:49 5h 16m 308 80% 0.0% 48 min
AS 218 ATL 16:18 SEA 18:46 5h 28m 51 62% 2.0% 55 min
AS 263 ATL 16:34 SEA 19:05 5h 31m 49 77% 2.0% 32 min
DL 472 ATL 16:45 SEA 19:04 5h 19m 174 70% 0.0% 63 min
DL 714 ATL 18:25 SEA 20:49 5h 24m 307 67% 0.3% 74 min
DL 834 ATL 19:22 SEA 21:48 5h 26m 45 56% 0.0% 42 min
DL 903 ATL 21:35 SEA 23:59 5h 24m 284 79% 0.7% 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 ATL SEA 5h 24m 78% 0.5% 2,380 Flying now
Alaska ATL SEA 5h 31m 75% 1.0% 898 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