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 delay07:00–08:003.3min · 430 recorded · 428 measured
Gap to highest-delay hour23.9min07:00 ↔ 08:00
Recorded flights2,760LAX–RDU
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
27.313.60.0
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
4302150
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
Fewer than 200 measured departures
—
1
1
06:00
Fewer than 200 measured departures
—
141
142
07:00
91.1%
3.3 min
428
430
08:00
76.4%
27.3 min
313
316
09:00
81.1%
16.2 min
429
430
10:00
Fewer than 200 measured departures
—
185
185
11:00
Fewer than 200 measured departures
—
159
159
12:00
Fewer than 200 measured departures
—
125
126
13:00
No observations
—
—
—
14:00
Fewer than 200 measured departures
—
1
1
15:00
Fewer than 200 measured departures
—
3
3
16:00
Fewer than 200 measured departures
—
41
42
17:00
69.4%
24.9 min
314
316
18:00
76.4%
18.0 min
322
324
19:00
Fewer than 200 measured departures
—
117
117
20:00
Fewer than 200 measured departures
—
23
23
21:00
Fewer than 200 measured departures
—
4
4
22:00
Fewer than 200 measured departures
—
139
141
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
23.811.90.0
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
4432220
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.4%
23.8 min
431
433
Tuesday
84.7%
7.7 min
352
352
Wednesday
84.6%
15.6 min
344
344
Thursday
83.0%
10.0 min
435
436
Friday
83.6%
10.3 min
440
443
Saturday
79.8%
12.2 min
312
316
Sunday
79.8%
16.6 min
431
436
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
22.411.20.0
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
3541770
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
—
199
206
Feb
Fewer than 200 measured departures
—
188
190
Mar
78.5%
20.1 min
233
235
Apr
81.0%
9.1 min
232
232
May
83.5%
14.7 min
254
254
Jun
81.7%
17.9 min
316
318
Jul
75.0%
22.4 min
352
354
Aug
Fewer than 200 measured departures
—
135
135
Sep
Fewer than 200 measured departures
—
112
112
Oct
85.9%
7.8 min
220
220
Nov
84.2%
8.1 min
246
246
Dec
77.9%
17.6 min
258
258
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 time81.6%2,253
Delayed >15 min17.8%492
Cancelled0.5%15
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.