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 delay06:00–07:000.2min · 606 recorded · 599 measured
Gap to highest-delay hour30.7min06:00 ↔ 20:00
Recorded flights4,707DAL–TPA
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
30.915.40.0
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
6063030
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
96.2%
0.5 min
210
212
06:00
95.5%
0.2 min
599
606
07:00
93.6%
1.3 min
295
295
08:00
92.1%
3.1 min
203
206
09:00
Fewer than 200 measured departures
—
173
178
10:00
80.4%
12.5 min
321
325
11:00
74.4%
13.0 min
211
217
12:00
Fewer than 200 measured departures
—
152
153
13:00
77.8%
12.8 min
329
333
14:00
Fewer than 200 measured departures
—
145
145
15:00
62.4%
17.0 min
218
218
16:00
57.3%
27.2 min
417
420
17:00
49.6%
30.3 min
226
229
18:00
63.0%
24.2 min
224
226
19:00
60.6%
24.6 min
348
350
20:00
52.6%
30.9 min
405
410
21:00
Fewer than 200 measured departures
—
183
184
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
20.810.40.0
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
7183590
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%
17.2 min
700
709
Tuesday
78.2%
12.5 min
619
624
Wednesday
78.4%
12.8 min
612
615
Thursday
72.0%
15.2 min
693
701
Friday
72.4%
13.1 min
710
718
Saturday
74.4%
15.9 min
617
625
Sunday
67.9%
20.8 min
708
715
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
22.211.10.0
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
4792400
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
83.0%
7.8 min
383
398
Feb
73.3%
14.0 min
401
403
Mar
74.1%
14.9 min
464
472
Apr
77.0%
12.2 min
430
433
May
64.4%
21.5 min
444
447
Jun
64.3%
21.6 min
459
459
Jul
66.3%
22.2 min
477
479
Aug
Fewer than 200 measured departures
—
192
193
Sep
Fewer than 200 measured departures
—
180
180
Oct
79.1%
9.8 min
368
370
Nov
80.4%
11.8 min
423
433
Dec
72.4%
19.0 min
438
440
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 time72.6%3,419
Delayed >15 min26.3%1,240
Cancelled1.0%48
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.