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 delay17:00–18:005.6min · 417 recorded · 402 measured
Gap to highest-delay hour9.6min17:00 ↔ 20:00
Recorded flights2,604ANC–BET
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
15.27.60.0
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
5332670
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
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
16
16
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
37
37
10:00
85.0%
5.6 min
520
533
11:00
Fewer than 200 measured departures
—
102
103
12:00
79.2%
6.7 min
322
330
13:00
75.9%
11.3 min
278
285
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
83.1%
5.6 min
402
417
18:00
76.8%
7.8 min
228
233
19:00
71.7%
10.8 min
364
375
20:00
64.7%
15.2 min
266
275
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
12.56.20.0
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
3761880
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
71.7%
12.5 min
368
376
Tuesday
79.1%
7.3 min
364
376
Wednesday
82.4%
5.1 min
364
368
Thursday
78.5%
7.6 min
348
360
Friday
80.5%
7.2 min
364
374
Saturday
81.0%
7.4 min
368
374
Sunday
74.9%
10.2 min
359
376
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
15.47.70.0
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
2481240
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
67.3%
15.4 min
220
240
Feb
77.1%
10.2 min
218
224
Mar
72.1%
13.9 min
244
248
Apr
80.2%
4.9 min
237
240
May
84.3%
3.5 min
248
248
Jun
83.8%
5.9 min
240
240
Jul
79.8%
8.6 min
238
244
Aug
Fewer than 200 measured departures
—
122
124
Sep
Fewer than 200 measured departures
—
118
120
Oct
Fewer than 200 measured departures
—
198
204
Nov
86.0%
2.5 min
222
232
Dec
73.5%
10.3 min
230
240
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 time76.2%1,985
Delayed >15 min21.1%550
Cancelled2.6%69
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.