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 delay08:00–09:000.6min · 510 recorded · 505 measured
Gap to highest-delay hour17.8min08:00 ↔ 18:00
Recorded flights6,529ATL–OMA
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
18.49.20.0
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
6673340
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
91.3%
9.0 min
655
667
06:00
Fewer than 200 measured departures
—
39
40
07:00
91.9%
5.8 min
570
578
08:00
91.1%
0.6 min
505
510
09:00
81.7%
8.7 min
235
238
10:00
84.1%
12.6 min
271
274
11:00
84.0%
9.5 min
431
434
12:00
83.7%
5.9 min
503
511
13:00
83.7%
9.1 min
215
217
14:00
84.3%
10.1 min
223
225
15:00
80.3%
11.8 min
508
517
16:00
76.7%
11.0 min
473
479
17:00
Fewer than 200 measured departures
—
133
133
18:00
75.4%
18.4 min
491
497
19:00
77.4%
14.7 min
451
457
20:00
Fewer than 200 measured departures
—
73
73
21:00
Fewer than 200 measured departures
—
28
28
22:00
77.3%
14.5 min
612
622
23:00
Fewer than 200 measured departures
—
27
29
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
12.96.40.0
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
1,0085040
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.6%
12.9 min
1,000
1,008
Tuesday
84.1%
10.8 min
911
916
Wednesday
86.2%
9.1 min
905
915
Thursday
82.6%
10.0 min
942
944
Friday
82.8%
10.7 min
981
1,000
Saturday
84.7%
6.4 min
779
801
Sunday
79.1%
11.7 min
925
945
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
20.610.30.0
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
6683340
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
82.0%
12.5 min
561
579
Feb
88.5%
5.5 min
567
567
Mar
81.4%
17.0 min
652
668
Apr
84.1%
9.8 min
603
610
May
83.3%
9.9 min
588
596
Jun
80.0%
9.3 min
574
584
Jul
73.1%
20.6 min
590
596
Aug
79.9%
15.8 min
288
288
Sep
91.6%
0.5 min
274
274
Oct
88.6%
5.3 min
508
509
Nov
86.0%
5.8 min
600
606
Dec
79.5%
8.5 min
638
652
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 time81.7%5,334
Delayed >15 min17.0%1,109
Cancelled1.3%86
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.