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 delay07:00–08:005.1min · 414 recorded · 400 measured
Gap to highest-delay hour19.7min07:00 ↔ 14:00
Recorded flights2,148FOD–ORD
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
24.812.40.0
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
5252630
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
No observations
—
—
—
06:00
No observations
—
—
—
07:00
82.5%
5.1 min
400
414
08:00
Fewer than 200 measured departures
—
0
1
09:00
Fewer than 200 measured departures
—
15
15
10:00
84.8%
10.8 min
454
472
11:00
Fewer than 200 measured departures
—
66
68
12:00
80.2%
11.3 min
506
525
13:00
Fewer than 200 measured departures
—
1
1
14:00
75.2%
24.8 min
431
452
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
131
134
17:00
No observations
—
—
—
18:00
Fewer than 200 measured departures
—
65
66
19:00
No observations
—
—
—
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
14.27.10.0
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
3561780
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.5%
13.0 min
335
354
Tuesday
Fewer than 200 measured departures
—
194
194
Wednesday
79.8%
9.2 min
336
350
Thursday
81.5%
12.5 min
335
344
Friday
78.6%
13.4 min
336
354
Saturday
Fewer than 200 measured departures
—
189
196
Sunday
77.6%
14.2 min
344
356
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
14.67.30.0
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
2161080
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
77.1%
14.6 min
205
214
Feb
Fewer than 200 measured departures
—
186
192
Mar
Fewer than 200 measured departures
—
192
212
Apr
Fewer than 200 measured departures
—
197
206
May
Fewer than 200 measured departures
—
196
196
Jun
Fewer than 200 measured departures
—
156
156
Jul
Fewer than 200 measured departures
—
162
168
Aug
Fewer than 200 measured departures
—
103
106
Sep
Fewer than 200 measured departures
—
102
102
Oct
Fewer than 200 measured departures
—
176
176
Nov
Fewer than 200 measured departures
—
197
204
Dec
Fewer than 200 measured departures
—
197
216
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 time77.0%1,653
Delayed >15 min19.4%416
Cancelled3.7%79
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.