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 delay20:00–21:000.9min · 290 recorded · 286 measured
Gap to highest-delay hour14.7min20:00 ↔ 15:00
Recorded flights5,516LAX–LIH
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
15.67.80.0
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
1,0185090
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
—
79
79
08:00
91.4%
1.5 min
769
770
09:00
79.8%
8.1 min
792
795
10:00
Fewer than 200 measured departures
—
172
172
11:00
Fewer than 200 measured departures
—
106
106
12:00
85.4%
5.0 min
247
247
13:00
86.2%
7.3 min
732
733
14:00
81.8%
9.0 min
1,013
1,018
15:00
77.5%
15.6 min
293
297
16:00
Fewer than 200 measured departures
—
39
39
17:00
Fewer than 200 measured departures
—
184
184
18:00
No observations
—
—
—
19:00
No observations
—
—
—
20:00
93.0%
0.9 min
286
290
21:00
83.5%
9.6 min
388
394
22:00
90.4%
1.6 min
324
329
23:00
Fewer than 200 measured departures
—
63
63
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
11.05.50.0
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
9204600
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
85.2%
4.7 min
752
756
Tuesday
86.6%
4.7 min
684
686
Wednesday
86.5%
6.7 min
753
756
Thursday
85.4%
5.1 min
776
782
Friday
82.2%
10.6 min
776
780
Saturday
81.4%
11.0 min
916
920
Sunday
83.5%
5.7 min
830
836
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
17.68.80.0
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
7263630
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
78.1%
17.6 min
416
430
Feb
80.1%
9.2 min
351
352
Mar
84.8%
3.7 min
479
482
Apr
81.5%
9.0 min
475
478
May
85.8%
4.3 min
513
514
Jun
85.0%
5.7 min
618
618
Jul
83.4%
8.6 min
723
726
Aug
84.9%
4.9 min
284
284
Sep
88.3%
2.4 min
230
230
Oct
86.5%
8.0 min
391
394
Nov
87.6%
1.9 min
468
468
Dec
86.3%
7.7 min
539
540
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 time83.8%4,624
Delayed >15 min15.6%863
Cancelled0.5%29
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.