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 delay08:00–09:008.1min · 638 recorded · 633 measured
Gap to highest-delay hour13.1min08:00 ↔ 17:00
Recorded flights2,320DEN–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
21.210.60.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
6963480
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
—
16
16
06:00
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
48
48
08:00
87.7%
8.1 min
633
638
09:00
Fewer than 200 measured departures
—
76
76
10:00
Fewer than 200 measured departures
—
72
73
11:00
Fewer than 200 measured departures
—
117
118
12:00
Fewer than 200 measured departures
—
129
129
13:00
Fewer than 200 measured departures
—
82
83
14:00
Fewer than 200 measured departures
—
130
130
15:00
Fewer than 200 measured departures
—
134
134
16:00
Fewer than 200 measured departures
—
116
116
17:00
70.2%
21.2 min
688
696
18:00
Fewer than 200 measured departures
—
41
41
19:00
Fewer than 200 measured departures
—
21
22
20:00
No observations
—
—
—
21:00
No observations
—
—
—
22:00
No observations
—
—
—
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
20.510.20.0
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
3661830
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.1%
15.3 min
339
342
Tuesday
78.4%
15.7 min
282
284
Wednesday
83.3%
20.5 min
276
276
Thursday
74.3%
12.9 min
342
342
Friday
72.8%
14.4 min
346
350
Saturday
75.8%
12.2 min
355
360
Sunday
74.9%
12.8 min
363
366
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
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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
2881440
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
169
174
Feb
Fewer than 200 measured departures
—
187
188
Mar
Fewer than 200 measured departures
—
186
186
Apr
Fewer than 200 measured departures
—
180
180
May
72.8%
21.6 min
202
204
Jun
70.2%
16.8 min
282
282
Jul
66.6%
22.6 min
284
288
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
120
120
Oct
Fewer than 200 measured departures
—
182
182
Nov
Fewer than 200 measured departures
—
197
200
Dec
Fewer than 200 measured departures
—
190
192
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 time75.7%1,756
Delayed >15 min23.6%547
Cancelled0.7%17
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.