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 delay06:00–07:001.8min · 629 recorded · 621 measured
Gap to highest-delay hour25.6min06:00 ↔ 14:00
Recorded flights5,526EWR–SAN
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
27.413.70.0
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
7803900
00:0003:0006:0009:0012:0015:0018:0021:00
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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
No observations
—
—
—
06:00
92.0%
1.8 min
621
629
07:00
88.5%
6.9 min
767
780
08:00
76.2%
23.6 min
466
480
09:00
86.6%
7.9 min
417
421
10:00
82.5%
6.6 min
211
211
11:00
Fewer than 200 measured departures
—
53
54
12:00
Fewer than 200 measured departures
—
18
18
13:00
69.5%
24.2 min
259
265
14:00
67.6%
27.4 min
321
322
15:00
Fewer than 200 measured departures
—
39
39
16:00
77.0%
19.7 min
627
646
17:00
76.2%
14.4 min
265
268
18:00
74.0%
16.9 min
312
325
19:00
Fewer than 200 measured departures
—
33
34
20:00
Fewer than 200 measured departures
—
168
172
21:00
84.4%
12.0 min
270
277
22:00
92.2%
5.4 min
575
585
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
19.19.60.0
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
7973990
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.8%
13.5 min
772
795
Tuesday
87.0%
5.9 min
768
782
Wednesday
84.0%
10.0 min
779
786
Thursday
78.8%
18.5 min
787
793
Friday
83.4%
12.0 min
785
797
Saturday
79.5%
13.9 min
761
776
Sunday
77.8%
19.1 min
770
797
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
24.312.20.0
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
6143070
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.8%
10.4 min
382
394
Feb
87.8%
4.0 min
384
400
Mar
85.1%
8.9 min
495
496
Apr
82.1%
14.0 min
475
476
May
79.6%
22.0 min
534
544
Jun
80.3%
11.1 min
554
560
Jul
71.9%
24.3 min
580
614
Aug
77.1%
13.3 min
306
310
Sep
86.9%
3.7 min
282
286
Oct
83.9%
5.9 min
479
480
Nov
82.4%
12.9 min
465
470
Dec
79.0%
19.7 min
486
496
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 time79.8%4,409
Delayed >15 min18.3%1,013
Cancelled1.9%104
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.