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 delay06:00–07:0010.9min · 341 recorded · 339 measured
Gap to highest-delay hour22.5min06:00 ↔ 20:00
Recorded flights4,459FAT–SFO
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
33.416.70.0
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
5222610
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
Fewer than 200 measured departures
—
76
76
06:00
87.9%
10.9 min
339
341
07:00
86.3%
17.3 min
262
266
08:00
83.0%
14.0 min
512
512
09:00
Fewer than 200 measured departures
—
141
141
10:00
64.6%
30.7 min
325
325
11:00
76.5%
16.2 min
281
283
12:00
Fewer than 200 measured departures
—
121
123
13:00
Fewer than 200 measured departures
—
54
54
14:00
79.3%
15.0 min
516
522
15:00
No observations
—
—
—
16:00
74.1%
18.2 min
448
458
17:00
Fewer than 200 measured departures
—
62
64
18:00
76.7%
19.3 min
498
511
19:00
79.5%
15.5 min
244
246
20:00
70.3%
33.4 min
327
335
21:00
Fewer than 200 measured departures
—
30
30
22:00
Fewer than 200 measured departures
—
169
172
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
23.711.90.0
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
6643320
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.6%
19.4 min
652
664
Tuesday
82.8%
13.3 min
621
626
Wednesday
78.0%
13.1 min
632
637
Thursday
75.2%
19.3 min
641
651
Friday
74.1%
23.7 min
629
638
Saturday
81.0%
15.5 min
578
584
Sunday
75.8%
23.6 min
652
659
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
26.213.10.0
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
4502250
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
76.4%
24.6 min
351
360
Feb
73.5%
22.1 min
313
319
Mar
84.3%
9.7 min
408
409
Apr
76.0%
22.1 min
437
442
May
73.3%
24.5 min
450
450
Jun
77.3%
10.4 min
419
419
Jul
71.0%
25.3 min
424
424
Aug
83.6%
11.5 min
232
232
Sep
82.7%
14.0 min
237
237
Oct
84.3%
10.0 min
407
407
Nov
81.4%
17.0 min
392
416
Dec
68.4%
26.2 min
335
344
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 time76.5%3,410
Delayed >15 min22.3%995
Cancelled1.2%54
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.