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 delay09:00–10:004.2min · 202 recorded · 201 measured
Gap to highest-delay hour35.4min09:00 ↔ 19:00
Recorded flights4,902LNK–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
39.619.80.0
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
6833420
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
—
108
112
06:00
88.0%
8.5 min
408
417
07:00
83.4%
15.0 min
459
467
08:00
83.9%
10.9 min
541
549
09:00
84.6%
4.2 min
201
202
10:00
Fewer than 200 measured departures
—
104
106
11:00
76.4%
18.2 min
564
574
12:00
76.5%
17.6 min
531
540
13:00
Fewer than 200 measured departures
—
46
47
14:00
Fewer than 200 measured departures
—
33
35
15:00
71.2%
23.9 min
656
683
16:00
62.7%
35.7 min
354
365
17:00
Fewer than 200 measured departures
—
56
59
18:00
Fewer than 200 measured departures
—
114
120
19:00
58.4%
39.6 min
370
383
20:00
Fewer than 200 measured departures
—
175
181
21:00
Fewer than 200 measured departures
—
2
2
22:00
Fewer than 200 measured departures
—
54
58
23:00
Fewer than 200 measured departures
—
2
2
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
23.511.80.0
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
7193600
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.2%
22.7 min
694
719
Tuesday
79.9%
20.0 min
695
707
Wednesday
77.7%
18.8 min
676
689
Thursday
77.0%
19.7 min
674
694
Friday
74.5%
18.4 min
693
714
Saturday
76.2%
16.8 min
650
671
Sunday
72.3%
23.5 min
696
708
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
48.524.20.0
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
5552780
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
69.3%
26.4 min
309
314
Feb
75.0%
19.2 min
272
272
Mar
68.5%
33.5 min
390
418
Apr
75.2%
25.3 min
520
540
May
80.6%
14.9 min
546
551
Jun
75.5%
13.8 min
522
532
Jul
74.2%
21.9 min
535
555
Aug
78.8%
15.5 min
236
241
Sep
87.5%
6.0 min
231
232
Oct
84.0%
4.0 min
400
402
Nov
81.9%
12.9 min
486
508
Dec
62.2%
48.5 min
331
337
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 time74.2%3,635
Delayed >15 min23.3%1,143
Cancelled2.5%124
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.