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4,735 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 5.

Best time to leave 5–6 am 90% arrive on time from BOS
Best single flight UA 2441 BOS 06:00 → SFO 09:27 · 86% on time Avoid UA 2400 BOS 18:10 → SFO 21:47 · 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
BOS
94
91
86
88
70
80
76
79
83
67
64
65
58
49
59
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.

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 1,905 76% 1.3% 68 min
Delta 918 72% 1.5% 65 min
JetBlue 1,738 70% 1.8% 69 min
Alaska 173 61% 0.6% 71 min
Southwest 1 – 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.
UA 2441 BOS 06:00 SFO 09:27 86%
B6 1333 BOS 06:35 SFO 10:08 85%
B6 1833 BOS 09:50 SFO 13:23 83%
DL 977 BOS 07:20 SFO 10:59 82%
UA 1074 BOS 11:35 SFO 15:02 80%
· · ·
B6 733 BOS 17:00 SFO 20:34 59%
B6 333 BOS 20:55 SFO 00:31 59%
UA 2400 BOS 18:10 SFO 21:47 57%

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.
UA 2441 BOS 06:00 SFO 09:27 6h 27m 313 86% 1.0% 46 min
B6 1333 BOS 06:35 SFO 10:08 6h 33m 180 85% 0.6% 50 min
DL 977 BOS 07:20 SFO 10:59 6h 39m 203 82% 2.5% 52 min
UA 2623 BOS 07:28 SFO 10:55 6h 27m 56 82% 0.0% 42 min
UA 323 BOS 07:28 SFO 10:55 6h 27m 37 86% 0.0% 27 min
B6 833 BOS 08:20 SFO 11:54 6h 34m 48 83% 0.0% 81 min
UA 2002 BOS 09:07 SFO 12:34 6h 27m 72 56% 0.0% 66 min
B6 1833 BOS 09:50 SFO 13:23 6h 35m 165 83% 0.0% 57 min
DL 860 BOS 10:11 SFO 13:45 6h 36m 54 51% 0.0% 61 min
UA 1074 BOS 11:35 SFO 15:02 6h 27m 258 80% 0.4% 72 min
B6 933 BOS 14:40 SFO 18:20 6h 40m 41 71% 0.0% 45 min
B6 233 BOS 15:50 SFO 19:22 6h 34m 171 74% 2.3% 54 min
UA 440 BOS 16:15 SFO 19:49 6h 34m 35 49% 0.0% 74 min
UA 512 BOS 16:15 SFO 19:49 6h 34m 37 69% 2.7% 77 min
B6 733 BOS 17:00 SFO 20:34 6h 35m 331 59% 1.2% 74 min
DL 1655 BOS 17:05 SFO 20:51 6h 48m 337 69% 1.8% 58 min
UA 2400 BOS 18:10 SFO 21:47 6h 37m 318 57% 1.6% 82 min
B6 1633 BOS 18:55 SFO 22:38 6h 41m 84 42% 3.6% 85 min
B6 1733 BOS 19:07 SFO 22:47 6h 40m 18 39% 0.0% 78 min
UA 2107 BOS 20:20 SFO 23:57 6h 37m 84 58% 2.4% 55 min
DL 2919 BOS 20:55 SFO 00:33 6h 38m 67 66% 1.5% 47 min
B6 333 BOS 20:55 SFO 00:31 6h 36m 301 59% 1.7% 72 min
B6 413 BOS 20:55 SFO 00:30 6h 35m 31 31% 12.9% 85 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 BOS SFO 6h 34m 76% 1.3% 1,905 Flying now
Delta BOS SFO 6h 47m 72% 1.5% 918 Flying now
JetBlue BOS SFO 6h 36m 70% 1.8% 1,738 Flying now
Alaska BOS SFO 6h 40m 61% 0.6% 173 Not flying now
Southwest BOS SFO – 100%few flights 0.0% 1 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