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 delay11:00–12:0013.1min · 387 recorded · 383 measured
Gap to highest-delay hour34.3min11:00 ↔ 17:00
Recorded flights5,681FNT–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
47.423.70.0
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
7143570
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
82.6%
38.8 min
212
223
06:00
80.2%
42.9 min
252
256
07:00
85.2%
13.7 min
594
607
08:00
Fewer than 200 measured departures
—
175
181
09:00
Fewer than 200 measured departures
—
54
55
10:00
70.7%
20.2 min
290
295
11:00
78.9%
13.1 min
383
387
12:00
Fewer than 200 measured departures
—
163
168
13:00
77.8%
14.4 min
532
540
14:00
73.2%
24.4 min
488
499
15:00
Fewer than 200 measured departures
—
65
70
16:00
66.0%
32.7 min
692
714
17:00
58.1%
47.4 min
303
323
18:00
Fewer than 200 measured departures
—
88
91
19:00
65.7%
45.0 min
353
375
20:00
63.2%
40.3 min
647
676
21:00
Fewer than 200 measured departures
—
112
122
22:00
Fewer than 200 measured departures
—
92
99
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
42.921.40.0
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
8324160
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
70.0%
31.9 min
789
832
Tuesday
76.4%
25.3 min
788
806
Wednesday
72.2%
25.6 min
784
804
Thursday
71.5%
29.3 min
789
809
Friday
72.5%
28.9 min
790
822
Saturday
71.1%
30.6 min
765
792
Sunday
65.1%
42.9 min
790
816
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
45.622.80.0
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
6103050
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
68.5%
36.4 min
412
422
Feb
63.9%
45.6 min
379
390
Mar
65.8%
35.7 min
439
470
Apr
73.8%
27.8 min
515
540
May
75.1%
20.3 min
535
542
Jun
67.6%
42.2 min
558
575
Jul
68.4%
33.8 min
589
610
Aug
69.7%
31.6 min
337
352
Sep
79.4%
19.2 min
349
352
Oct
75.2%
17.1 min
484
484
Nov
78.4%
16.7 min
491
522
Dec
68.6%
44.3 min
407
422
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 time68.9%3,915
Delayed >15 min27.8%1,580
Cancelled3.3%186
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.