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 delay07:00–08:001.6min · 410 recorded · 397 measured
Gap to highest-delay hour30.4min07:00 ↔ 20:00
Recorded flights9,078JFK–RDU
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
32.016.00.0
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
8434220
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
91.5%
2.7 min
482
498
06:00
92.3%
3.0 min
674
693
07:00
91.2%
1.6 min
397
410
08:00
85.6%
8.3 min
382
394
09:00
85.3%
5.7 min
456
459
10:00
87.5%
5.1 min
719
748
11:00
83.0%
7.3 min
377
379
12:00
82.5%
8.7 min
819
843
13:00
80.3%
11.0 min
447
456
14:00
75.9%
14.8 min
794
812
15:00
80.1%
10.7 min
433
454
16:00
74.4%
17.2 min
277
281
17:00
68.5%
23.6 min
634
693
18:00
74.1%
19.6 min
398
421
19:00
69.5%
24.9 min
282
301
20:00
61.5%
32.0 min
449
485
21:00
70.8%
18.6 min
610
661
22:00
Fewer than 200 measured departures
—
81
90
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
16.08.00.0
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
1,3756880
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.5%
11.0 min
1,247
1,328
Tuesday
82.5%
8.8 min
1,208
1,257
Wednesday
83.7%
9.7 min
1,205
1,239
Thursday
77.6%
13.8 min
1,229
1,259
Friday
79.0%
12.1 min
1,277
1,304
Saturday
80.4%
13.3 min
1,313
1,375
Sunday
75.7%
16.0 min
1,232
1,316
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
32.016.00.0
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
1,1725860
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
80.1%
12.2 min
693
746
Feb
81.9%
11.1 min
631
701
Mar
79.6%
12.6 min
741
750
Apr
83.5%
6.8 min
649
652
May
84.5%
8.1 min
705
707
Jun
74.1%
19.2 min
749
781
Jul
64.6%
32.0 min
701
830
Aug
84.2%
7.1 min
398
402
Sep
82.8%
10.8 min
389
394
Oct
87.3%
5.0 min
828
836
Nov
85.1%
5.5 min
1,146
1,172
Dec
74.8%
15.2 min
1,081
1,107
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 time76.8%6,972
Delayed >15 min19.2%1,739
Cancelled4.0%367
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.