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 delay07:00–08:003.2min · 572 recorded · 559 measured
Gap to highest-delay hour19.6min07:00 ↔ 19:00
Recorded flights10,581JFK–PHX
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
22.811.40.0
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
1,1865930
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
Fewer than 200 measured departures
—
16
17
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
54
55
06:00
92.3%
4.9 min
1,092
1,121
07:00
92.5%
3.2 min
559
572
08:00
88.9%
5.4 min
1,058
1,078
09:00
83.9%
14.0 min
573
580
10:00
Fewer than 200 measured departures
—
194
199
11:00
77.2%
14.6 min
359
366
12:00
77.6%
17.0 min
1,167
1,186
13:00
81.1%
12.9 min
476
487
14:00
Fewer than 200 measured departures
—
81
82
15:00
71.5%
19.5 min
541
551
16:00
75.9%
16.3 min
577
599
17:00
80.5%
14.1 min
950
966
18:00
77.4%
13.7 min
482
495
19:00
72.3%
22.8 min
224
237
20:00
72.3%
22.2 min
303
308
21:00
73.9%
14.6 min
459
464
22:00
84.3%
10.4 min
351
355
23:00
81.6%
13.6 min
843
863
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
14.87.40.0
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
1,5947970
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.3%
13.6 min
1,541
1,589
Tuesday
83.6%
11.9 min
1,415
1,455
Wednesday
81.7%
10.9 min
1,428
1,444
Thursday
80.6%
11.9 min
1,550
1,558
Friday
82.8%
13.1 min
1,555
1,577
Saturday
83.3%
11.4 min
1,339
1,364
Sunday
79.0%
14.8 min
1,531
1,594
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
20.510.20.0
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
1,0935470
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
86.4%
8.7 min
990
1,030
Feb
82.8%
12.0 min
886
935
Mar
81.1%
10.3 min
1,077
1,093
Apr
83.9%
11.6 min
1,039
1,041
May
84.0%
10.8 min
1,007
1,013
Jun
78.1%
16.4 min
918
922
Jul
74.3%
20.5 min
877
935
Aug
84.5%
6.3 min
400
406
Sep
84.4%
13.2 min
392
394
Oct
82.3%
10.7 min
775
782
Nov
83.2%
12.5 min
992
1,000
Dec
77.7%
15.4 min
1,006
1,030
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 time80.0%8,463
Delayed >15 min17.9%1,896
Cancelled2.1%222
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.