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6,036 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Fly Dulles to LAX: 85% arrive on time, against 64% from BWI to Ontario.

Best time to leave 5–6 am 94% arrive on time from BWI
Best airport pair IAD → LAX 85% on time, 0.8% cancelled, 2,472 flights
Best single flight UA 1689 IAD 13:10 → LAX 15:42 · 90% on time Avoid UA 2276 IAD 17:48 → LAX 20:21 · 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
21
22
DCA
89
64
77
76
IAD
87
97
88
91
91
89
84
78
74
79
80
85
BWI
94
92
87
85
79
82
52
49
48
54
71
59
51
% 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
Los Angeles area flights leaving DCA 8–9 am: 1Close ×
AA 1966 DCA 08:40 LAX 11:19 5h 39m 364 83% 0.8% 51 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.
United 2,918 85% 0.9% 65 min
Delta DCA→LAX only 362 79% 2.5% 111 min
American 843 78% 1.2% 67 min
Alaska 383 70% 1.6% 62 min
Southwest 1,454 68% 1.1% 49 min
Spirit BWI→LAX only 76 – 1.3% 32 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.
UA 1689 IAD 13:10 LAX 15:42 90%
UA 1734 IAD 08:15 LAX 10:47 86%
UA 1385 IAD 22:20 LAX 00:57 84%
AA 1966 DCA 08:40 LAX 11:19 83%
AS 5 DCA 09:59 LAX 12:27 71%
· · ·
UA 2276 IAD 17:48 LAX 20:21 71%
All 23 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.
United IAD LAX 5h 35m 85% 0.8% 2,338 Flying now
United BWI LAX 5h 51m 84% 1.0% 580 Flying now
Delta DCA LAX 5h 52m 79% 2.5% 362 Flying now
American DCA LAX 5h 40m 79% 1.4% 728 Flying now
American IAD LAX 5h 34m 77% 0.0% 115 Flying now
Alaska DCA LAX 5h 28m 71% 1.6% 364 Flying now
Southwest BWI LAX 5h 50m 68% 1.4% 1,045 Flying now
Southwest BWI ONT 5h 30m 64% 0.4% 281 Flying now
Spirit BWI LAX 5h 46m 93% 1.3% 76 Not flying now
Southwest BWI LGB 5h 40m 73% 0.0% 128 Not flying now
Alaska IAD LAX 5h 29m 47%few flights 0.0% 19 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