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5,551 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 88% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 10–11 pm 91% arrive on time from SEA
Best single flight UA 2618 SEA 07:00 → ORD 13:15 · 92% on time Avoid AS 429 SEA 10:29 → ORD 16:44 · 56% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SEA
91
89
85
79
71
71
63
72
68
77
74
83
74
% 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 1,503 81% 0.9% 92 min
Delta 907 78% 1.2% 75 min
American 1,350 74% 1.9% 104 min
Alaska 1,791 74% 1.3% 58 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 2618 SEA 07:00 ORD 13:15 92%
UA 747 SEA 23:11 ORD 05:18 86%
DL 2055 SEA 07:20 ORD 13:30 85%
AS 328 SEA 00:17 ORD 06:20 83%
AS 538 SEA 17:48 ORD 23:59 80%
· · ·
DL 2108 SEA 17:40 ORD 23:39 76%
AS 410 SEA 13:10 ORD 19:21 72%
AS 429 SEA 10:29 ORD 16:44 56%

All 23 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 328 SEA 00:17 ORD 06:20 4h 03m 232 83% 0.9% 47 min
AS 578 SEA 06:00 ORD 12:03 4h 03m 52 90% 0.0% 63 min
AA 2922 SEA 06:00 ORD 12:12 4h 12m 138 91% 0.7% 337 min
UA 2618 SEA 07:00 ORD 13:15 4h 15m 265 92% 0.4% 143 min
DL 2055 SEA 07:20 ORD 13:30 4h 10m 299 85% 0.3% 60 min
AS 265 SEA 08:34 ORD 14:46 4h 12m 260 77% 1.2% 48 min
AA 2523 SEA 10:22 ORD 16:53 4h 28m 70 74% 0.0% 189 min
AS 429 SEA 10:29 ORD 16:44 4h 15m 227 56% 3.1% 60 min
AS 584 SEA 10:31 ORD 16:48 4h 17m 28 54% 0.0% 54 min
DL 637 SEA 10:35 ORD 16:45 4h 10m 107 72% 1.9% 53 min
UA 2835 SEA 10:52 ORD 17:05 4h 13m 72 72% 0.0% 112 min
AS 346 SEA 11:29 ORD 17:38 4h 09m 35 28% 5.7% 54 min
AS 409 SEA 12:45 ORD 19:03 4h 18m 28 71% 0.0% 65 min
AS 410 SEA 13:10 ORD 19:21 4h 11m 353 72% 1.1% 66 min
UA 768 SEA 13:51 ORD 20:17 4h 26m 35 43% 0.0% 79 min
UA 2101 SEA 13:55 ORD 20:21 4h 26m 86 65% 0.0% 107 min
AA 2520 SEA 13:58 ORD 20:26 4h 36m 72 46% 1.4% 72 min
AA 2524 SEA 15:28 ORD 22:00 4h 32m 72 60% 4.2% 83 min
UA 1503 SEA 17:15 ORD 23:22 4h 07m 71 81% 1.4% 105 min
DL 2108 SEA 17:40 ORD 23:39 3h 59m 363 76% 1.4% 95 min
AS 538 SEA 17:48 ORD 23:59 4h 11m 350 80% 0.9% 69 min
UA 747 SEA 23:11 ORD 05:18 4h 07m 363 86% 0.3% 95 min
AA 2881 SEA 23:56 ORD 06:02 4h 06m 72 94% 2.8% 160 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.
United SEA ORD 4h 10m 81% 0.9% 1,503 Flying now
Delta SEA ORD 4h 10m 78% 1.2% 907 Flying now
American SEA ORD 4h 16m 74% 1.9% 1,350 Flying now
Alaska SEA ORD 4h 09m 74% 1.3% 1,791 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