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 delay07:00–08:003.1min · 640 recorded · 628 measured
Gap to highest-delay hour19.9min07:00 ↔ 18:00
Recorded flights10,239ATL–ORF
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
23.011.50.0
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
8084040
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
91.5%
6.2 min
588
598
06:00
89.3%
8.7 min
532
543
07:00
91.2%
3.1 min
628
640
08:00
88.3%
7.2 min
685
696
09:00
84.5%
6.5 min
651
660
10:00
86.9%
4.9 min
674
687
11:00
86.4%
6.5 min
435
439
12:00
82.5%
9.9 min
799
808
13:00
79.4%
10.7 min
698
707
14:00
82.6%
8.5 min
281
285
15:00
74.9%
15.0 min
773
777
16:00
73.8%
21.8 min
481
485
17:00
74.5%
15.7 min
544
548
18:00
68.9%
23.0 min
617
629
19:00
69.0%
18.2 min
617
625
20:00
70.2%
18.9 min
302
304
21:00
Fewer than 200 measured departures
—
174
176
22:00
79.4%
16.4 min
539
549
23:00
Fewer than 200 measured departures
—
80
83
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
17.48.70.0
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
1,5877940
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
77.3%
14.1 min
1,561
1,587
Tuesday
85.6%
7.5 min
1,378
1,384
Wednesday
86.7%
7.8 min
1,364
1,377
Thursday
82.2%
8.9 min
1,526
1,534
Friday
81.6%
11.4 min
1,545
1,572
Saturday
79.5%
14.8 min
1,211
1,244
Sunday
72.9%
17.4 min
1,513
1,541
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
22.611.30.0
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
1,0965480
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.9%
12.8 min
767
808
Feb
83.1%
9.4 min
773
783
Mar
82.0%
10.0 min
895
907
Apr
87.2%
7.5 min
900
918
May
76.1%
15.2 min
1,022
1,026
Jun
77.1%
15.2 min
1,018
1,032
Jul
70.2%
22.6 min
1,082
1,096
Aug
80.5%
11.2 min
522
528
Sep
90.1%
2.3 min
506
506
Oct
84.9%
7.5 min
834
836
Nov
84.2%
7.3 min
884
890
Dec
76.9%
11.9 min
895
909
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 time79.6%8,151
Delayed >15 min19.0%1,947
Cancelled1.4%141
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.