Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.
Flight timing & delays
Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.
Times are local to the departure airport of each flight; both directions are combined.
US domestic sectors recorded by BTS
Source: the US BTS · Oct 12, 2024 → Jul 31, 2026
Lowest average delay07:00–08:002.4min · 276 recorded · 268 measured
Gap to highest-delay hour34.5min07:00 ↔ 21:00
Recorded flights1,534BOS–SYR
Departure hour
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
36.818.40.0
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
3001500
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
View the figures
Departure hour
On-time departures
Average departure delay
With departure time
Recorded flights
00:00
No observations
—
—
—
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
67
67
06:00
90.4%
3.3 min
292
300
07:00
92.5%
2.4 min
268
276
08:00
Fewer than 200 measured departures
—
41
41
09:00
Fewer than 200 measured departures
—
38
38
10:00
Fewer than 200 measured departures
—
34
34
11:00
Fewer than 200 measured departures
—
43
43
12:00
Fewer than 200 measured departures
—
1
1
13:00
Fewer than 200 measured departures
—
6
6
14:00
Fewer than 200 measured departures
—
39
39
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
38
38
17:00
Fewer than 200 measured departures
—
64
64
18:00
Fewer than 200 measured departures
—
53
54
19:00
Fewer than 200 measured departures
—
61
62
20:00
Fewer than 200 measured departures
—
133
135
21:00
51.4%
36.8 min
214
222
22:00
Fewer than 200 measured departures
—
112
114
23:00
No observations
—
—
—
Day of week
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
22.011.00.0
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
2211110
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.8%
10.9 min
212
220
Tuesday
82.9%
12.3 min
216
221
Wednesday
79.9%
7.1 min
219
220
Thursday
75.5%
22.0 min
220
220
Friday
76.2%
14.0 min
218
221
Saturday
81.5%
6.0 min
211
216
Sunday
65.4%
21.5 min
208
216
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
186930
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
118
124
Feb
Fewer than 200 measured departures
—
101
112
Mar
Fewer than 200 measured departures
—
124
124
Apr
Fewer than 200 measured departures
—
168
168
May
Fewer than 200 measured departures
—
185
186
Jun
Fewer than 200 measured departures
—
180
180
Jul
Fewer than 200 measured departures
—
181
186
Aug
Fewer than 200 measured departures
—
62
62
Sep
Fewer than 200 measured departures
—
48
48
Oct
Fewer than 200 measured departures
—
101
102
Nov
Fewer than 200 measured departures
—
118
118
Dec
Fewer than 200 measured departures
—
118
124
Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.
Recorded outcomes
On time75.7%1,161
Delayed >15 min22.4%343
Cancelled2.0%30
Missing departure time0.0%0
All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.
On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.
Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.