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6,800 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 72%.

Best time to leave 5–6 am 95% arrive on time from SFO
Best single flight DL 2721 SFO 05:55 → SEA 08:11 · 95% on time Avoid AS 656 SFO 10:18 → SEA 12:27 · 57% 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
SFO
96
95
93
90
82
62
78
73
76
75
60
77
60
73
83
70
68
64
% 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 (incl. SkyWest) 2,330 77% 0.5% 59 min
Delta (incl. SkyWest) 1,748 76% 1.4% 64 min
Alaska (incl. SkyWest, Horizon) 2,719 71% 1.3% 55 min
Southwest 3 – 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 2721 SFO 05:55 SEA 08:11 95%
AS 580 SFO 12:54 SEA 15:08 80%
DL 1412 SFO 13:38 SEA 15:59 77%
UA 2279 SFO 16:27 SEA 18:47 76%
AS 758 SFO 17:38 SEA 19:47 73%
· · ·
DL 3991flown by SkyWest SFO 20:59 SEA 23:24 67%
UA 1007 SFO 20:54 SEA 23:19 66%
AS 656 SFO 10:18 SEA 12:27 57%
All 30 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 SFO SEA 2h 18m 77% 0.5% 2,330 Flying now
Delta SFO SEA 2h 20m 76% 1.4% 1,748 Flying now
Alaska SFO SEA 2h 15m 71% 1.3% 2,719 Flying now
Southwest SFO SEA – 100%few flights 0.0% 3 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