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3,473 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 7 in 10.

Best time to leave 5–6 am 96% arrive on time from SFO
Best single flight DL 1331 SFO 05:50 → SLC 08:42 · 96% on time Avoid DL 902 SFO 13:20 → SLC 16:15 · 71% 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
SFO
96
92
91
74
80
76
64
78
81
63
68
80
76
60
% 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
Salt Lake City flights leaving SFO 8–9 am: 2Close ×
UA 5405flown by SkyWest SFO 08:40 SLC 11:49 2h 09m 35 94% 0.0% 56 min
UA 5605flown by SkyWest SFO 08:40 SLC 11:49 2h 09m 37 95% 0.0% 24 min

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) 1,715 78% 1.0% 77 min
United (incl. SkyWest) 1,484 77% 0.9% 64 min
Frontier 195 71% 2.1% 82 min
Alaska (incl. SkyWest, Horizon) 79 – 1.3% 76 min

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 1331 SFO 05:50 SLC 08:42 96%
DL 920 SFO 09:55 SLC 12:44 78%
DL 1088 SFO 17:07 SLC 20:02 71%
DL 902 SFO 13:20 SLC 16:15 71%
All 14 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.
Delta SFO SLC 1h 56m 78% 1.0% 1,715 Flying now
United SFO SLC 1h 59m 77% 0.9% 1,484 Flying now
Frontier SFO SLC 2h 09m 71% 2.1% 195 Flying now
Alaska SFO SLC 1h 55m 78% 1.3% 79 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