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 delay05:00–06:00-0.1min · 343 recorded · 342 measured
Gap to highest-delay hour26.3min05:00 ↔ 21:00
Recorded flights2,003BQN–JFK
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
26.313.1-0.1
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
3431720
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
Fewer than 200 measured departures
—
46
47
02:00
Fewer than 200 measured departures
—
14
15
03:00
Fewer than 200 measured departures
—
36
36
04:00
Fewer than 200 measured departures
—
92
93
05:00
92.4%
-0.1 min
342
343
06:00
91.5%
4.2 min
258
266
07:00
Fewer than 200 measured departures
—
12
13
08:00
Fewer than 200 measured departures
—
6
6
09:00
Fewer than 200 measured departures
—
119
120
10:00
Fewer than 200 measured departures
—
3
3
11:00
Fewer than 200 measured departures
—
21
21
12:00
Fewer than 200 measured departures
—
13
13
13:00
Fewer than 200 measured departures
—
3
3
14:00
Fewer than 200 measured departures
—
36
38
15:00
Fewer than 200 measured departures
—
161
167
16:00
Fewer than 200 measured departures
—
17
18
17:00
Fewer than 200 measured departures
—
53
53
18:00
Fewer than 200 measured departures
—
17
17
19:00
Fewer than 200 measured departures
—
46
50
20:00
Fewer than 200 measured departures
—
126
131
21:00
57.3%
26.3 min
286
293
22:00
63.7%
19.5 min
237
241
23:00
Fewer than 200 measured departures
—
16
16
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
21.710.90.0
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
2951480
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
72.2%
15.6 min
288
293
Tuesday
81.0%
9.8 min
268
274
Wednesday
77.2%
13.5 min
267
272
Thursday
71.9%
13.5 min
285
287
Friday
75.4%
9.6 min
288
292
Saturday
70.7%
17.5 min
283
295
Sunday
69.0%
21.7 min
281
290
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
24.012.00.0
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
2141070
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
188
196
Feb
Fewer than 200 measured departures
—
191
203
Mar
80.4%
7.7 min
204
205
Apr
Fewer than 200 measured departures
—
174
174
May
Fewer than 200 measured departures
—
172
172
Jun
Fewer than 200 measured departures
—
175
176
Jul
Fewer than 200 measured departures
—
174
187
Aug
Fewer than 200 measured departures
—
124
124
Sep
Fewer than 200 measured departures
—
64
64
Oct
Fewer than 200 measured departures
—
108
108
Nov
Fewer than 200 measured departures
—
178
180
Dec
60.6%
24.0 min
208
214
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 time72.2%1,447
Delayed >15 min25.6%513
Cancelled2.1%43
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.