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6,800 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 2 in 3.

Best time to leave 6–7 am 92% arrive on time from ATL
Best single flight DL 926 ATL 07:25 → DCA 09:15 · 85% on time Avoid DL 727 ATL 19:55 → DCA 21:46 · 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
ATL
93
91
86
83
75
81
85
79
74
66
65
68
73
66
62
68
% 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
Washington flights leaving ATL 11 am–12 pm: 1Close ×
DL 737 ATL 11:00 DCA 12:42 1h 42m 365 81% 2.2% 55 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.
American (incl. Envoy, PSA, Republic) 1,851 73% 5.7% 123 min
Southwest 1,107 72% 1.5% 66 min
Delta 3,842 69% 2.4% 61 min

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 926 ATL 07:25 DCA 09:15 85%
DL 380 ATL 09:20 DCA 11:08 82%
DL 737 ATL 11:00 DCA 12:42 81%
DL 360 ATL 13:09 DCA 14:59 72%
DL 537 ATL 21:55 DCA 23:44 70%
· · ·
DL 832 ATL 17:55 DCA 19:48 59%
DL 850 ATL 15:30 DCA 17:25 58%
DL 727 ATL 19:55 DCA 21:46 57%
All 25 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.
American ATL DCA 1h 58m 73% 5.7% 1,851 Flying now
Southwest ATL DCA 1h 45m 72% 1.5% 1,107 Flying now
Delta ATL DCA 1h 51m 69% 2.4% 3,842 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