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 · Aug 5, 2025 → Jul 31, 2026
Lowest average delay10:00–11:002.8min · 254 recorded · 252 measured
Gap to highest-delay hour1.0min10:00 ↔ 06:00
Recorded flights1,465IND–MDW
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
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
3.81.90.0
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
2551280
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
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
—
1
1
06:00
92.5%
3.8 min
252
255
07:00
Fewer than 200 measured departures
—
108
108
08:00
Fewer than 200 measured departures
—
3
3
09:00
Fewer than 200 measured departures
—
103
104
10:00
92.1%
2.8 min
252
254
11:00
Fewer than 200 measured departures
—
5
5
12:00
Fewer than 200 measured departures
—
2
2
13:00
Fewer than 200 measured departures
—
4
4
14:00
Fewer than 200 measured departures
—
12
12
15:00
Fewer than 200 measured departures
—
3
3
16:00
Fewer than 200 measured departures
—
100
101
17:00
Fewer than 200 measured departures
—
148
151
18:00
Fewer than 200 measured departures
—
99
100
19:00
Fewer than 200 measured departures
—
45
47
20:00
Fewer than 200 measured departures
—
151
152
21:00
Fewer than 200 measured departures
—
132
136
22:00
Fewer than 200 measured departures
—
26
27
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
15.67.80.0
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
2151080
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.7%
10.6 min
202
206
Tuesday
83.6%
6.3 min
214
215
Wednesday
87.6%
6.8 min
209
210
Thursday
82.5%
11.9 min
206
209
Friday
77.4%
14.5 min
208
210
Saturday
78.5%
12.3 min
205
209
Sunday
70.8%
15.6 min
202
206
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
133670
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
132
133
Feb
Fewer than 200 measured departures
—
113
113
Mar
Fewer than 200 measured departures
—
119
124
Apr
Fewer than 200 measured departures
—
129
130
May
Fewer than 200 measured departures
—
122
124
Jun
Fewer than 200 measured departures
—
117
120
Jul
Fewer than 200 measured departures
—
122
124
Aug
Fewer than 200 measured departures
—
108
108
Sep
Fewer than 200 measured departures
—
120
120
Oct
Fewer than 200 measured departures
—
124
124
Nov
Fewer than 200 measured departures
—
115
120
Dec
Fewer than 200 measured departures
—
125
125
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 time78.6%1,152
Delayed >15 min20.1%294
Cancelled1.3%19
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.