tailodds FORECAST
Tickets
Any day
3,868 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 57%.

Best time to leave 6–7 am 90% arrive on time from BOS
Best single flight UA 647 BOS 07:45 → DEN 10:19 · 91% on time Avoid B6 993 BOS 19:59 → DEN 22:41 · 60% 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
BOS
93
95
92
89
85
85
70
69
70
89
70
39
56
45
65
% 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 BOS 9–10 am: 1Close ×
UA 662 BOS 09:40 DEN 12:12 4h 32m 278 91% 0.7% 70 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.
Delta 372 85% 1.6% 48 min
United 1,897 83% 1.1% 67 min
JetBlue 685 71% 2.5% 63 min
Southwest 914 67% 1.0% 55 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.
UA 647 BOS 07:45 DEN 10:19 91%
UA 662 BOS 09:40 DEN 12:12 91%
UA 414 BOS 12:22 DEN 14:53 90%
UA 2297 BOS 15:10 DEN 17:55 86%
DL 499 BOS 07:45 DEN 10:19 85%
· · ·
UA 800 BOS 16:57 DEN 19:45 75%
B6 993 BOS 19:59 DEN 22:41 60%
All 15 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.
Delta BOS DEN 4h 34m 85% 1.6% 372 Flying now
United BOS DEN 4h 35m 83% 1.1% 1,897 Flying now
JetBlue BOS DEN 4h 42m 71% 2.5% 685 Flying now
Southwest BOS DEN 4h 45m 67% 1.0% 914 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