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2,814 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 8–9 am 89% arrive on time from BWI
Best single flight UA 2412 BWI 08:30 → DEN 10:25 · 90% on time Avoid UA 2012 BWI 16:23 → DEN 18:18 · 79% 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
BWI
89
91
90
83
88
74
50
71
55
76
56
56
72
47
45
% 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
Denver flights leaving BWI 8–9 pm: 1Close ×
WN 4214 BWI 20:00 DEN 22:00 4h 00m 34 71% 8.8% 72 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 871 87% 0.5% 70 min
Southwest 1,900 74% 1.5% 51 min
Frontier 43 – 0.0% 63 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 2412 BWI 08:30 DEN 10:25 90%
UA 2012 BWI 16:23 DEN 18:18 79%
All 12 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 BWI DEN 3h 58m 87% 0.5% 871 Flying now
Southwest BWI DEN 4h 00m 74% 1.5% 1,900 Flying now
Frontier BWI DEN 4h 03m 60% 0.0% 43 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