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 delay06:00–07:001.4min · 599 recorded · 581 measured
Gap to highest-delay hour36.8min06:00 ↔ 17:00
Recorded flights2,817EWR–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
38.119.10.0
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
5993000
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
—
32
33
06:00
93.1%
1.4 min
581
599
07:00
Fewer than 200 measured departures
—
27
27
08:00
Fewer than 200 measured departures
—
70
73
09:00
Fewer than 200 measured departures
—
138
140
10:00
89.9%
5.1 min
237
246
11:00
Fewer than 200 measured departures
—
141
143
12:00
Fewer than 200 measured departures
—
179
187
13:00
Fewer than 200 measured departures
—
45
46
14:00
Fewer than 200 measured departures
—
29
29
15:00
Fewer than 200 measured departures
—
184
197
16:00
Fewer than 200 measured departures
—
82
87
17:00
69.7%
38.1 min
218
242
18:00
Fewer than 200 measured departures
—
38
39
19:00
Fewer than 200 measured departures
—
109
127
20:00
Fewer than 200 measured departures
—
36
40
21:00
74.3%
19.1 min
335
347
22:00
58.5%
26.9 min
200
209
23:00
Fewer than 200 measured departures
—
6
6
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
16.48.20.0
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
4342170
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
82.0%
9.4 min
395
428
Tuesday
88.3%
2.2 min
401
425
Wednesday
83.6%
10.3 min
426
434
Thursday
80.5%
16.0 min
410
428
Friday
83.3%
12.9 min
419
429
Saturday
82.2%
16.4 min
287
295
Sunday
82.2%
15.4 min
349
378
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
27.613.80.0
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
3321660
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
88.4%
5.3 min
241
251
Feb
Fewer than 200 measured departures
—
197
214
Mar
86.8%
9.4 min
266
270
Apr
84.4%
9.3 min
211
214
May
85.1%
13.3 min
268
276
Jun
86.7%
8.3 min
225
234
Jul
75.7%
27.6 min
280
332
Aug
Fewer than 200 measured departures
—
90
92
Sep
Fewer than 200 measured departures
—
66
68
Oct
84.6%
6.9 min
247
248
Nov
80.3%
12.8 min
310
320
Dec
79.0%
13.0 min
286
298
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 time79.4%2,236
Delayed >15 min16.0%451
Cancelled4.6%130
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.