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6,796 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 63% on time.

Best time to leave 5–6 am 92% arrive on time from SEA
Best single flight DL 2635 SEA 21:45 → SFO 00:06 · 71% on time Avoid AS 725 SEA 07:03 → SFO 09:20 · 52% 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
SEA
94
98
64
60
68
57
67
84
75
78
72
76
68
52
60
60
70
% 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 (incl. SkyWest) 1,747 67% 1.4% 57 min
United (incl. SkyWest) 2,327 65% 0.8% 69 min
Alaska (incl. SkyWest, Horizon) 2,718 59% 1.2% 54 min
Southwest 4 – 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 2635 SEA 21:45 SFO 00:06 71%
AS 1385 SEA 16:36 SFO 18:48 71%
DL 3707flown by SkyWest SEA 14:30 SFO 16:50 71%
UA 1482 SEA 10:29 SFO 12:47 71%
AS 655 SEA 11:42 SFO 14:04 70%
· · ·
AS 688 SEA 17:59 SFO 20:16 55%
AS 528 SEA 08:53 SFO 11:09 54%
AS 725 SEA 07:03 SFO 09:20 52%

All 33 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.
UA 1259 SEA 05:00 SFO 07:10 2h 10m 15 93% 6.7% 42 min
UA 5676flown by SkyWest SEA 05:15 SFO 07:35 2h 20m 135 87% 0.7% 60 min
UA 2029 SEA 05:15 SFO 07:25 2h 10m 11 100% 9.1% –
UA 1578 SEA 07:00 SFO 09:18 2h 18m 35 11% 0.0% 64 min
AS 1475 SEA 07:00 SFO 09:18 2h 18m 46 19% 6.5% 51 min
UA 2842 SEA 07:00 SFO 09:18 2h 18m 24 12% 0.0% 69 min
AS 725 SEA 07:03 SFO 09:20 2h 17m 268 52% 2.2% 48 min
DL 794 SEA 07:15 SFO 09:34 2h 19m 31 45% 0.0% 53 min
DL 2870 SEA 07:20 SFO 09:39 2h 19m 55 36% 0.0% 47 min
UA 2831 SEA 08:45 SFO 11:03 2h 18m 72 33% 2.8% 79 min
AS 528 SEA 08:53 SFO 11:09 2h 16m 219 54% 0.9% 55 min
DL 1412 SEA 09:45 SFO 12:08 2h 23m 346 64% 1.4% 62 min
UA 1482 SEA 10:29 SFO 12:47 2h 18m 233 71% 0.4% 60 min
AS 655 SEA 11:42 SFO 14:04 2h 22m 274 70% 0.0% 50 min
AS 680 SEA 13:20 SFO 15:31 2h 11m 249 69% 1.2% 51 min
UA 2205 SEA 13:30 SFO 15:48 2h 18m 23 27% 4.3% 50 min
UA 737 SEA 13:30 SFO 15:48 2h 18m 362 56% 0.6% 64 min
DL 3707flown by SkyWest SEA 14:30 SFO 16:50 2h 20m 325 71% 1.2% 45 min
UA 325 SEA 15:33 SFO 17:47 2h 14m 101 84% 1.0% 61 min
UA 2866 SEA 15:33 SFO 17:47 2h 14m 110 56% 0.0% 74 min
AS 1385 SEA 16:36 SFO 18:48 2h 12m 233 71% 1.3% 41 min
UA 2164 SEA 17:20 SFO 19:37 2h 17m 23 43% 0.0% 56 min
UA 5592flown by SkyWest SEA 17:20 SFO 19:50 2h 30m 10 60% 0.0% 96 min
AS 791 SEA 17:36 SFO 19:52 2h 16m 51 28% 2.0% 46 min
DL 3991flown by SkyWest SEA 17:52 SFO 20:19 2h 27m 294 65% 0.7% 56 min
AS 688 SEA 17:59 SFO 20:16 2h 17m 209 55% 0.5% 58 min
AS 619 SEA 18:36 SFO 20:48 2h 12m 51 29% 0.0% 65 min
UA 2837 SEA 19:05 SFO 21:21 2h 16m 35 24% 0.0% 71 min
UA 2241 SEA 19:05 SFO 21:21 2h 16m 37 22% 2.7% 73 min
AS 628 SEA 19:42 SFO 21:54 2h 12m 51 12% 0.0% 64 min
AS 590 SEA 20:42 SFO 22:55 2h 13m 210 57% 0.5% 69 min
AS 411 SEA 21:42 SFO 23:59 2h 17m 90 64% 0.0% 58 min
DL 2635 SEA 21:45 SFO 00:06 2h 21m 340 71% 1.2% 59 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 SFO 2h 21m 67% 1.4% 1,747 Flying now
United SEA SFO 2h 18m 65% 0.8% 2,327 Flying now
Alaska SEA SFO 2h 16m 59% 1.2% 2,718 Flying now
Southwest SEA SFO – 100%few flights 0.0% 4 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