tailodds FORECAST
Tickets
Any day
3,872 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 7–8 am 94% arrive on time from DEN
Best single flight UA 2656 DEN 23:59 → BOS 05:58 · 92% on time Avoid B6 394 DEN 14:45 → BOS 20:43 · 68% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
DEN
96
88
78
68
74
57
64
63
61
70
70
29
22
66
81
% 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
Boston flights leaving DEN 11 am–12 pm: 1Close ×
DL 499 DEN 11:30 BOS 17:36 4h 06m 349 75% 1.4% 59 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 1,900 78% 0.9% 71 min
Delta 372 75% 1.3% 57 min
JetBlue 686 69% 3.1% 86 min
Southwest 914 59% 1.1% 66 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 2656 DEN 23:59 BOS 05:58 92%
UA 558 DEN 07:45 BOS 13:49 91%
UA 1232 DEN 09:40 BOS 15:44 86%
DL 499 DEN 11:30 BOS 17:36 75%
UA 1356 DEN 17:40 BOS 23:44 73%
· · ·
UA 597 DEN 14:06 BOS 20:10 71%
B6 994 DEN 23:37 BOS 05:30 70%
B6 394 DEN 14:45 BOS 20:43 68%
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.
United DEN BOS 4h 02m 78% 0.9% 1,900 Flying now
Delta DEN BOS 4h 06m 75% 1.3% 372 Flying now
JetBlue DEN BOS 3h 58m 69% 3.1% 686 Flying now
Southwest DEN BOS 3h 50m 59% 1.1% 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