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Showing Delta only (incl. its regional partners)All airlines ×
1,747 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SEA → SFO flights land within a few points of 2 in 3 on time whatever the hour.

Best time to leave 1–2 pm 79% arrive on time from SEA
Best single flight DL 2635 SEA 21:45 → SFO 00:06 · 71% on time Avoid DL 1412 SEA 09:45 → SFO 12:08 · 64% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SEA
67
80
86
60
84
73
% 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.

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%
DL 3707flown by SkyWest SEA 14:30 SFO 16:50 71%
DL 3991flown by SkyWest SEA 17:52 SFO 20:19 65%
DL 1412 SEA 09:45 SFO 12:08 64%

All 6 Delta 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.

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
DL 1412 SEA 09:45 SFO 12:08 2h 23m 346 64% 1.4% 62 min
DL 3707flown by SkyWest SEA 14:30 SFO 16:50 2h 20m 325 71% 1.2% 45 min
DL 3991flown by SkyWest SEA 17:52 SFO 20:19 2h 27m 294 65% 0.7% 56 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
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