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 delay07:00–08:008.2min · 373 recorded · 368 measured
Gap to highest-delay hour9.4min07:00 ↔ 10:00
Recorded flights1,754ORD–SCE
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
17.78.80.0
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
4202100
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
Fewer than 200 measured departures
—
160
161
07:00
81.0%
8.2 min
368
373
08:00
Fewer than 200 measured departures
—
49
50
09:00
Fewer than 200 measured departures
—
2
2
10:00
77.4%
17.7 min
415
420
11:00
Fewer than 200 measured departures
—
91
93
12:00
Fewer than 200 measured departures
—
7
7
13:00
Fewer than 200 measured departures
—
111
111
14:00
Fewer than 200 measured departures
—
173
178
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
3
3
17:00
73.8%
14.4 min
237
247
18:00
Fewer than 200 measured departures
—
64
66
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
42
43
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
25.012.50.0
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
2921460
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.0%
19.3 min
254
262
Tuesday
76.7%
25.0 min
215
216
Wednesday
Fewer than 200 measured departures
—
196
199
Thursday
81.1%
16.5 min
248
256
Friday
76.8%
14.7 min
276
280
Saturday
79.4%
13.5 min
247
249
Sunday
78.3%
16.7 min
286
292
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
22.511.20.0
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
2191100
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
—
88
90
Feb
Fewer than 200 measured departures
—
68
74
Mar
76.0%
22.5 min
208
209
Apr
Fewer than 200 measured departures
—
178
181
May
77.6%
22.4 min
214
219
Jun
87.1%
5.6 min
201
207
Jul
Fewer than 200 measured departures
—
122
124
Aug
Fewer than 200 measured departures
—
72
72
Sep
Fewer than 200 measured departures
—
106
106
Oct
Fewer than 200 measured departures
—
175
175
Nov
Fewer than 200 measured departures
—
199
204
Dec
Fewer than 200 measured departures
—
91
93
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 time76.7%1,346
Delayed >15 min21.4%376
Cancelled1.8%32
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.