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 delay10:00–11:009.7min · 810 recorded · 800 measured
Gap to highest-delay hour6.9min10:00 ↔ 14:00
Recorded flights2,126ORD–PNS
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
16.58.30.0
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
8104050
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
Fewer than 200 measured departures
—
2
2
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
No observations
—
—
—
06:00
Fewer than 200 measured departures
—
1
1
07:00
Fewer than 200 measured departures
—
37
37
08:00
Fewer than 200 measured departures
—
35
35
09:00
Fewer than 200 measured departures
—
16
17
10:00
84.3%
9.7 min
800
810
11:00
Fewer than 200 measured departures
—
136
139
12:00
Fewer than 200 measured departures
—
74
75
13:00
Fewer than 200 measured departures
—
158
163
14:00
81.1%
16.5 min
718
729
15:00
Fewer than 200 measured departures
—
65
69
16:00
Fewer than 200 measured departures
—
15
15
17:00
Fewer than 200 measured departures
—
1
1
18:00
Fewer than 200 measured departures
—
30
31
19:00
No observations
—
—
—
20:00
Fewer than 200 measured departures
—
2
2
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
20.910.50.0
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
3411710
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.4%
15.7 min
285
293
Tuesday
86.8%
5.5 min
272
280
Wednesday
84.6%
11.8 min
273
277
Thursday
80.0%
20.9 min
300
301
Friday
76.9%
20.3 min
298
300
Saturday
83.4%
10.7 min
337
341
Sunday
82.5%
11.1 min
325
334
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
20.710.40.0
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
3101550
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
—
126
134
Feb
85.4%
3.8 min
206
206
Mar
84.1%
12.2 min
301
310
Apr
78.6%
18.6 min
234
234
May
89.4%
6.8 min
236
240
Jun
Fewer than 200 measured departures
—
194
198
Jul
78.0%
20.7 min
200
202
Aug
Fewer than 200 measured departures
—
66
66
Sep
Fewer than 200 measured departures
—
60
60
Oct
Fewer than 200 measured departures
—
108
108
Nov
Fewer than 200 measured departures
—
174
179
Dec
Fewer than 200 measured departures
—
185
189
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 time80.6%1,714
Delayed >15 min17.7%376
Cancelled1.7%36
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.