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5,558 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 62%.

Best time to leave 1–2 pm 84% arrive on time from ORD
Best single flight UA 2099 ORD 08:45 → SEA 11:38 · 83% on time Avoid AS 337 ORD 17:42 → SEA 20:21 · 49% 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
ORD
86
88
86
84
73
68
75
86
70
70
85
58
63
62
58
53
39
% 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.
United 1,504 77% 0.7% 61 min
Delta 907 68% 1.4% 70 min
Alaska 1,796 68% 1.9% 66 min
American 1,351 65% 1.9% 70 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.
UA 2099 ORD 08:45 SEA 11:38 83%
DL 2041 ORD 06:55 SEA 09:31 74%
UA 1801 ORD 16:20 SEA 19:06 73%
AS 407 ORD 15:43 SEA 18:22 68%
AS 329 ORD 20:20 SEA 23:04 67%
· · ·
AS 587 ORD 08:02 SEA 10:37 64%
UA 2211 ORD 20:05 SEA 22:56 59%
AS 337 ORD 17:42 SEA 20:21 49%
All 24 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.
United ORD SEA 4h 41m 77% 0.7% 1,504 Flying now
Delta ORD SEA 4h 40m 68% 1.4% 907 Flying now
Alaska ORD SEA 4h 40m 68% 1.9% 1,796 Flying now
American ORD SEA 4h 44m 65% 1.9% 1,351 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