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 · Apr 4, 2025 → Jul 31, 2026
Lowest average delay07:00–08:0013.5min · 264 recorded · 260 measured
Recorded flights1,613MHK–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
13.56.80.0
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
2641320
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
—
33
34
06:00
Fewer than 200 measured departures
—
91
94
07:00
88.9%
13.5 min
260
264
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
36
38
10:00
No observations
—
—
—
11:00
Fewer than 200 measured departures
—
102
104
12:00
Fewer than 200 measured departures
—
4
4
13:00
Fewer than 200 measured departures
—
119
119
14:00
Fewer than 200 measured departures
—
190
198
15:00
Fewer than 200 measured departures
—
147
147
16:00
Fewer than 200 measured departures
—
51
55
17:00
Fewer than 200 measured departures
—
134
140
18:00
Fewer than 200 measured departures
—
29
29
19:00
Fewer than 200 measured departures
—
44
46
20:00
Fewer than 200 measured departures
—
73
73
21:00
Fewer than 200 measured departures
—
83
88
22:00
Fewer than 200 measured departures
—
168
180
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
33.316.60.0
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
2351180
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
73.2%
26.0 min
224
235
Tuesday
76.4%
17.6 min
220
223
Wednesday
85.1%
9.7 min
221
228
Thursday
67.7%
31.7 min
226
231
Friday
71.6%
30.9 min
222
231
Saturday
77.9%
33.3 min
226
231
Sunday
73.8%
24.3 min
225
234
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
9.64.80.0
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
2411210
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
69
73
Feb
Fewer than 200 measured departures
—
90
90
Mar
Fewer than 200 measured departures
—
121
124
Apr
80.5%
9.6 min
220
228
May
86.6%
4.7 min
239
241
Jun
Fewer than 200 measured departures
—
179
186
Jul
Fewer than 200 measured departures
—
179
185
Aug
Fewer than 200 measured departures
—
72
76
Sep
Fewer than 200 measured departures
—
60
60
Oct
Fewer than 200 measured departures
—
112
112
Nov
Fewer than 200 measured departures
—
107
118
Dec
Fewer than 200 measured departures
—
116
120
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 time72.8%1,174
Delayed >15 min24.2%390
Cancelled3.0%49
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.