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 delay06:00–07:000.4min · 398 recorded · 385 measured
Gap to highest-delay hour15.4min06:00 ↔ 17:00
Recorded flights3,044GRR–LGA
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
15.87.90.0
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
3981990
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
93.0%
0.4 min
385
398
07:00
Fewer than 200 measured departures
—
36
39
08:00
91.6%
1.2 min
249
250
09:00
83.5%
5.3 min
327
330
10:00
Fewer than 200 measured departures
—
66
69
11:00
89.7%
2.8 min
253
253
12:00
81.3%
9.7 min
368
383
13:00
Fewer than 200 measured departures
—
93
97
14:00
77.9%
10.4 min
285
305
15:00
Fewer than 200 measured departures
—
66
67
16:00
Fewer than 200 measured departures
—
52
57
17:00
72.1%
15.8 min
251
276
18:00
Fewer than 200 measured departures
—
105
105
19:00
No observations
—
—
—
20:00
75.8%
11.3 min
215
230
21:00
Fewer than 200 measured departures
—
163
185
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
9.84.90.0
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
4792400
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
84.9%
5.6 min
451
476
Tuesday
83.0%
7.4 min
453
475
Wednesday
85.7%
6.2 min
460
479
Thursday
78.3%
9.8 min
451
474
Friday
80.5%
9.4 min
457
473
Saturday
84.5%
8.4 min
207
212
Sunday
83.7%
6.7 min
435
455
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
12.86.40.0
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
4122060
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
Fewer than 200 measured departures
—
97
110
Feb
Fewer than 200 measured departures
—
96
104
Mar
Fewer than 200 measured departures
—
173
198
Apr
Fewer than 200 measured departures
—
147
147
May
81.2%
8.2 min
308
314
Jun
82.7%
10.6 min
382
396
Jul
77.6%
12.8 min
375
412
Aug
85.7%
3.8 min
223
226
Sep
89.7%
3.1 min
224
224
Oct
87.8%
3.2 min
361
368
Nov
81.1%
4.2 min
297
310
Dec
80.5%
10.5 min
231
235
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 time79.3%2,413
Delayed >15 min16.5%501
Cancelled4.3%130
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.