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 delay09:00–10:00-3.2min · 234 recorded · 234 measured
Gap to highest-delay hour14.0min09:00 ↔ 07:00
Recorded flights4,237JAC–SLC
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
10.93.9-3.2
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
7833920
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
Fewer than 200 measured departures
—
13
13
07:00
86.7%
10.9 min
640
644
08:00
No observations
—
—
—
09:00
94.9%
-3.2 min
234
234
10:00
Fewer than 200 measured departures
—
94
97
11:00
89.8%
3.2 min
772
773
12:00
Fewer than 200 measured departures
—
92
95
13:00
85.4%
6.7 min
549
551
14:00
No observations
—
—
—
15:00
86.7%
7.8 min
458
465
16:00
No observations
—
—
—
17:00
86.4%
7.3 min
772
783
18:00
86.5%
2.8 min
274
274
19:00
Fewer than 200 measured departures
—
112
112
20:00
Fewer than 200 measured departures
—
196
196
21:00
No observations
—
—
—
22:00
No observations
—
—
—
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
12.06.00.0
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
6303150
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
85.4%
12.0 min
618
628
Tuesday
90.0%
5.5 min
579
580
Wednesday
88.6%
3.9 min
569
577
Thursday
85.7%
8.6 min
620
623
Friday
89.1%
7.8 min
626
630
Saturday
85.9%
5.1 min
575
579
Sunday
85.3%
7.4 min
619
620
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
28.613.7-1.2
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
4942470
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
81.7%
13.1 min
344
344
Feb
76.5%
28.6 min
310
319
Mar
85.3%
3.8 min
366
372
Apr
88.9%
6.0 min
360
360
May
91.1%
-1.2 min
447
447
Jun
89.6%
0.5 min
473
473
Jul
89.3%
2.1 min
493
494
Aug
92.8%
5.3 min
222
222
Sep
90.7%
0.0 min
204
204
Oct
89.5%
4.6 min
324
324
Nov
87.4%
12.6 min
332
334
Dec
82.2%
18.1 min
331
344
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 time86.5%3,664
Delayed >15 min12.8%542
Cancelled0.7%31
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.