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 delay08:00–09:000.2min · 380 recorded · 377 measured
Gap to highest-delay hour36.0min08:00 ↔ 18:00
Recorded flights5,218ISP–MCO
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
36.218.10.0
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
4642320
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
94.7%
1.9 min
244
245
06:00
93.7%
3.5 min
426
435
07:00
93.5%
0.6 min
464
464
08:00
89.9%
0.2 min
377
380
09:00
86.4%
7.8 min
398
407
10:00
82.8%
8.4 min
349
351
11:00
81.4%
7.2 min
322
323
12:00
80.7%
8.1 min
300
303
13:00
70.8%
25.1 min
216
220
14:00
Fewer than 200 measured departures
—
74
74
15:00
Fewer than 200 measured departures
—
145
147
16:00
68.1%
22.6 min
351
353
17:00
65.2%
25.4 min
322
330
18:00
53.1%
36.2 min
262
265
19:00
61.1%
24.7 min
344
349
20:00
51.4%
34.7 min
348
359
21:00
Fewer than 200 measured departures
—
159
160
22:00
Fewer than 200 measured departures
—
53
53
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
19.19.60.0
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
8414210
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
75.3%
15.8 min
754
775
Tuesday
83.7%
11.9 min
630
637
Wednesday
77.3%
10.7 min
661
663
Thursday
77.3%
13.6 min
741
747
Friday
73.2%
19.1 min
780
782
Saturday
77.2%
12.7 min
836
841
Sunday
73.8%
15.6 min
752
773
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
27.413.70.0
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
5522760
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
83.0%
5.2 min
434
446
Feb
81.4%
9.5 min
451
470
Mar
73.6%
15.5 min
474
487
Apr
77.2%
11.9 min
552
552
May
77.3%
12.2 min
507
508
Jun
72.1%
24.0 min
462
468
Jul
67.8%
25.0 min
485
488
Aug
67.7%
27.4 min
248
250
Sep
88.8%
2.8 min
215
215
Oct
81.2%
8.0 min
324
324
Nov
83.2%
10.0 min
483
483
Dec
71.3%
17.4 min
519
527
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 time75.7%3,950
Delayed >15 min23.1%1,204
Cancelled1.2%64
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.