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 delay08:00–09:004.2min · 355 recorded · 353 measured
Gap to highest-delay hour23.9min08:00 ↔ 13:00
Recorded flights4,431DFW–SJC
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
28.114.00.0
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
8494250
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
—
31
32
06:00
90.9%
6.9 min
651
669
07:00
Fewer than 200 measured departures
—
8
8
08:00
88.1%
4.2 min
353
355
09:00
79.1%
13.0 min
368
377
10:00
74.2%
16.8 min
260
260
11:00
72.9%
17.7 min
834
849
12:00
71.8%
26.7 min
245
252
13:00
71.2%
28.1 min
205
205
14:00
67.3%
25.3 min
517
532
15:00
Fewer than 200 measured departures
—
119
120
16:00
No observations
—
—
—
17:00
Fewer than 200 measured departures
—
9
9
18:00
Fewer than 200 measured departures
—
57
58
19:00
62.3%
25.3 min
395
410
20:00
Fewer than 200 measured departures
—
141
149
21:00
Fewer than 200 measured departures
—
93
96
22:00
Fewer than 200 measured departures
—
11
11
23:00
Fewer than 200 measured departures
—
37
39
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
21.410.70.0
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
6773390
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
74.5%
21.4 min
666
677
Tuesday
77.1%
15.8 min
576
589
Wednesday
73.2%
16.6 min
581
587
Thursday
78.0%
17.4 min
649
666
Friday
75.3%
20.8 min
652
671
Saturday
73.9%
14.8 min
552
569
Sunday
70.5%
20.7 min
658
672
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
34.817.40.0
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
4462230
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
78.3%
12.9 min
368
404
Feb
80.9%
10.6 min
392
392
Mar
75.7%
17.1 min
408
410
Apr
76.2%
16.1 min
408
418
May
71.8%
22.7 min
400
412
Jun
70.9%
28.3 min
436
446
Jul
64.7%
28.4 min
436
444
Aug
65.2%
34.8 min
201
205
Sep
Fewer than 200 measured departures
—
178
180
Oct
84.5%
5.4 min
328
328
Nov
78.5%
13.4 min
372
383
Dec
70.8%
18.7 min
407
409
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 time73.0%3,234
Delayed >15 min24.8%1,100
Cancelled2.2%97
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.