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 → Jun 3, 2026
Lowest average delay07:00–08:001.6min · 390 recorded · 386 measured
Gap to highest-delay hour35.0min07:00 ↔ 19:00
Recorded flights2,499DAL–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
36.618.30.0
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
3901950
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
—
9
9
06:00
Fewer than 200 measured departures
—
4
4
07:00
93.0%
1.6 min
386
390
08:00
87.1%
7.4 min
294
296
09:00
Fewer than 200 measured departures
—
75
75
10:00
Fewer than 200 measured departures
—
168
174
11:00
Fewer than 200 measured departures
—
27
28
12:00
76.0%
13.9 min
258
259
13:00
81.0%
10.4 min
352
354
14:00
Fewer than 200 measured departures
—
136
137
15:00
Fewer than 200 measured departures
—
139
140
16:00
Fewer than 200 measured departures
—
109
111
17:00
69.3%
19.1 min
254
257
18:00
Fewer than 200 measured departures
—
16
16
19:00
53.5%
36.6 min
245
249
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
19.89.90.0
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
3851930
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.7%
13.1 min
379
385
Tuesday
80.3%
12.4 min
355
358
Wednesday
80.4%
12.3 min
352
356
Thursday
74.3%
14.5 min
373
378
Friday
76.3%
14.6 min
375
379
Saturday
76.8%
15.8 min
271
275
Sunday
73.3%
19.8 min
367
368
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
25.212.60.0
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
2821410
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
198
206
Feb
Fewer than 200 measured departures
—
190
190
Mar
76.5%
17.4 min
230
233
Apr
76.3%
14.2 min
228
232
May
66.7%
25.2 min
234
238
Jun
Fewer than 200 measured departures
—
178
178
Jul
Fewer than 200 measured departures
—
177
178
Aug
Fewer than 200 measured departures
—
149
151
Sep
Fewer than 200 measured departures
—
145
146
Oct
84.0%
6.3 min
281
282
Nov
83.0%
11.8 min
224
227
Dec
77.3%
19.8 min
238
238
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 time76.4%1,910
Delayed >15 min22.5%562
Cancelled1.1%27
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.