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 delay06:00–07:000.6min · 497 recorded · 495 measured
Gap to highest-delay hour13.4min06:00 ↔ 21:00
Recorded flights2,307BFL–SFO
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
14.07.00.0
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
5232620
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
95.0%
0.6 min
495
497
07:00
Fewer than 200 measured departures
—
18
20
08:00
Fewer than 200 measured departures
—
3
3
09:00
Fewer than 200 measured departures
—
70
70
10:00
76.3%
11.5 min
523
523
11:00
Fewer than 200 measured departures
—
62
62
12:00
No observations
—
—
—
13:00
Fewer than 200 measured departures
—
172
173
14:00
81.2%
12.8 min
463
464
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
No observations
—
—
—
18:00
Fewer than 200 measured departures
—
1
1
19:00
Fewer than 200 measured departures
—
11
11
20:00
Fewer than 200 measured departures
—
61
62
21:00
82.0%
14.0 min
344
349
22:00
Fewer than 200 measured departures
—
72
72
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
15.37.70.0
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
3391700
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.4%
13.5 min
338
339
Tuesday
85.8%
6.9 min
324
325
Wednesday
83.5%
5.0 min
333
335
Thursday
83.1%
10.4 min
331
334
Friday
83.3%
12.5 min
335
336
Saturday
83.8%
11.0 min
309
311
Sunday
79.7%
15.3 min
325
327
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
18.49.20.0
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
2481240
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
—
186
189
Feb
Fewer than 200 measured departures
—
163
164
Mar
Fewer than 200 measured departures
—
178
178
Apr
Fewer than 200 measured departures
—
180
180
May
86.1%
5.1 min
201
202
Jun
71.7%
17.2 min
240
240
Jul
74.8%
18.4 min
246
246
Aug
Fewer than 200 measured departures
—
114
114
Sep
Fewer than 200 measured departures
—
106
106
Oct
84.3%
9.6 min
204
204
Nov
89.7%
3.2 min
233
236
Dec
81.6%
15.2 min
244
248
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 time82.1%1,893
Delayed >15 min17.4%402
Cancelled0.5%12
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.