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Showing Delta only (incl. its regional partners)All airlines ×
3,127 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 63%.

Best time to leave 6–7 am 95% arrive on time from BOS
Best single flight DL 5687 BOS 06:00 → DCA 07:49 · 93% on time Avoid DL 5666 BOS 20:05 → DCA 22:03 · 59% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
BOS
96
94
90
91
85
87
89
83
75
65
55
71
% 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 5687flown by Republic BOS 06:00 DCA 07:49 93%
DL 5692flown by Republic BOS 07:25 DCA 09:18 89%
DL 5693flown by Republic BOS 09:15 DCA 11:07 87%
DL 5672flown by Republic BOS 12:35 DCA 14:26 85%
DL 5704flown by Republic BOS 21:50 DCA 23:43 77%
· · ·
DL 5682flown by Republic BOS 14:20 DCA 16:13 69%
DL 5667flown by Republic BOS 17:50 DCA 19:52 63%
DL 5666flown by Republic BOS 20:05 DCA 22:03 59%

All 13 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 5687flown by Republic BOS 06:00 DCA 07:49 1h 49m 150 93% 5.3% 62 min
DL 5692flown by Republic BOS 07:25 DCA 09:18 1h 53m 327 89% 2.1% 46 min
DL 5693flown by Republic BOS 09:15 DCA 11:07 1h 48m 328 87% 2.7% 56 min
DL 5592flown by Republic BOS 10:25 DCA 12:12 1h 47m 47 85% 0.0% 73 min
DL 5857flown by Republic BOS 12:30 DCA 14:19 1h 49m 156 75% 1.9% 50 min
DL 5672flown by Republic BOS 12:35 DCA 14:26 1h 50m 288 85% 1.7% 58 min
DL 5682flown by Republic BOS 14:20 DCA 16:13 1h 48m 244 69% 4.1% 43 min
DL 5689flown by Republic BOS 15:45 DCA 17:43 1h 58m 303 69% 5.3% 61 min
DL 5820flown by Republic BOS 15:56 DCA 17:56 2h 01m 27 73% 3.7% 39 min
DL 5667flown by Republic BOS 17:50 DCA 19:52 2h 02m 170 63% 7.6% 77 min
DL 5767flown by Republic BOS 17:55 DCA 19:52 1h 57m 31 71% 0.0% 63 min
DL 5666flown by Republic BOS 20:05 DCA 22:03 1h 53m 198 59% 7.6% 76 min
DL 5704flown by Republic BOS 21:50 DCA 23:43 1h 53m 181 77% 7.7% 70 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 BOS DCA 1h 54m 77% 3.7% 3,127 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