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 delay07:00–08:000.8min · 270 recorded · 269 measured
Gap to highest-delay hour21.0min07:00 ↔ 17:00
Recorded flights5,799BNA–JFK
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
21.910.90.0
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
8444220
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
—
7
7
06:00
90.5%
4.2 min
410
427
07:00
92.9%
0.8 min
269
270
08:00
86.6%
6.0 min
410
424
09:00
91.4%
2.3 min
325
329
10:00
83.2%
9.0 min
440
447
11:00
85.2%
6.1 min
582
594
12:00
86.0%
5.8 min
494
509
13:00
75.8%
15.0 min
570
583
14:00
78.9%
14.0 min
493
502
15:00
73.5%
16.3 min
803
844
16:00
Fewer than 200 measured departures
—
89
104
17:00
68.5%
21.9 min
238
244
18:00
Fewer than 200 measured departures
—
111
118
19:00
Fewer than 200 measured departures
—
71
75
20:00
Fewer than 200 measured departures
—
137
148
21:00
Fewer than 200 measured departures
—
131
141
22:00
Fewer than 200 measured departures
—
31
33
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
15.57.80.0
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
8594300
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
80.0%
9.4 min
821
859
Tuesday
82.6%
8.5 min
768
800
Wednesday
85.0%
6.7 min
779
790
Thursday
76.1%
15.5 min
800
818
Friday
80.5%
11.3 min
822
844
Saturday
82.1%
14.4 min
809
831
Sunday
77.6%
13.3 min
812
857
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
28.014.00.0
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
6523260
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
80.6%
7.6 min
470
508
Feb
76.0%
9.8 min
458
482
Mar
86.1%
9.0 min
548
552
Apr
87.0%
3.6 min
538
538
May
83.6%
13.8 min
475
477
Jun
65.9%
28.0 min
431
448
Jul
65.8%
26.3 min
365
434
Aug
81.0%
6.6 min
231
232
Sep
89.6%
2.5 min
287
288
Oct
86.3%
5.7 min
578
584
Nov
82.4%
7.7 min
643
652
Dec
77.9%
16.9 min
587
604
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 time77.9%4,518
Delayed >15 min18.8%1,093
Cancelled3.2%188
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.