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 delay07:00–08:001.8min · 460 recorded · 452 measured
Gap to highest-delay hour28.6min07:00 ↔ 19:00
Recorded flights5,525SJU–TPA
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
30.415.20.0
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
8064030
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
Fewer than 200 measured departures
—
1
1
03:00
No observations
—
—
—
04:00
Fewer than 200 measured departures
—
1
1
05:00
87.1%
3.3 min
209
213
06:00
94.0%
2.9 min
799
806
07:00
93.8%
1.8 min
452
460
08:00
Fewer than 200 measured departures
—
131
131
09:00
Fewer than 200 measured departures
—
44
44
10:00
83.2%
8.6 min
202
205
11:00
82.1%
11.5 min
358
358
12:00
75.8%
15.9 min
277
278
13:00
Fewer than 200 measured departures
—
178
180
14:00
64.6%
20.5 min
263
264
15:00
72.3%
14.7 min
253
253
16:00
71.6%
20.4 min
416
419
17:00
60.8%
27.5 min
309
314
18:00
65.3%
23.3 min
259
259
19:00
63.0%
30.4 min
265
266
20:00
58.2%
28.5 min
669
682
21:00
61.0%
25.4 min
331
338
22:00
Fewer than 200 measured departures
—
52
53
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
20.410.20.0
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
9064530
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
74.9%
17.5 min
788
802
Tuesday
80.8%
11.1 min
686
688
Wednesday
77.7%
12.6 min
669
673
Thursday
74.4%
15.7 min
784
789
Friday
75.1%
17.7 min
800
805
Saturday
72.6%
15.7 min
891
906
Sunday
71.6%
20.4 min
851
862
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
JanFebMarAprMayJunJulAugSepOctNovDec
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
29.514.70.0
JanFebMarAprMayJunJulAugSepOctNovDec
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
6623310
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
79.3%
8.9 min
497
514
Feb
80.7%
13.2 min
424
425
Mar
74.0%
14.0 min
577
590
Apr
75.0%
14.1 min
463
468
May
75.3%
15.9 min
481
481
Jun
74.9%
16.5 min
609
611
Jul
65.8%
23.8 min
651
662
Aug
63.6%
29.5 min
225
228
Sep
Fewer than 200 measured departures
—
166
166
Oct
78.4%
15.6 min
306
306
Nov
80.4%
14.8 min
506
506
Dec
73.1%
17.7 min
564
568
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 time74.3%4,104
Delayed >15 min24.7%1,365
Cancelled1.0%56
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.