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 delay00:00–01:004.1min · 402 recorded · 402 measured
Gap to highest-delay hour0.0min00:00 ↔ 19:00
Recorded flights1,335ANC–LAX
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
4.22.10.0
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
4932470
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
83.1%
4.1 min
402
402
01:00
Fewer than 200 measured departures
—
10
10
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
No observations
—
—
—
06:00
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
68
68
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
6
6
10:00
Fewer than 200 measured departures
—
9
9
11:00
Fewer than 200 measured departures
—
57
57
12:00
No observations
—
—
—
13:00
Fewer than 200 measured departures
—
4
4
14:00
Fewer than 200 measured departures
—
13
13
15:00
No observations
—
—
—
16:00
Fewer than 200 measured departures
—
15
15
17:00
No observations
—
—
—
18:00
No observations
—
—
—
19:00
84.6%
4.2 min
493
493
20:00
Fewer than 200 measured departures
—
88
88
21:00
No observations
—
—
—
22:00
No observations
—
—
—
23:00
Fewer than 200 measured departures
—
170
170
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
5.82.90.0
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
2431220
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
Fewer than 200 measured departures
—
188
188
Tuesday
Fewer than 200 measured departures
—
154
154
Wednesday
Fewer than 200 measured departures
—
146
146
Thursday
Fewer than 200 measured departures
—
189
189
Friday
86.8%
3.9 min
205
205
Saturday
81.1%
4.3 min
243
243
Sunday
84.8%
5.8 min
210
210
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
6.83.40.0
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
2001000
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
—
97
97
Feb
Fewer than 200 measured departures
—
96
96
Mar
Fewer than 200 measured departures
—
120
120
Apr
Fewer than 200 measured departures
—
120
120
May
Fewer than 200 measured departures
—
128
128
Jun
Fewer than 200 measured departures
—
188
188
Jul
84.0%
6.8 min
200
200
Aug
Fewer than 200 measured departures
—
78
78
Sep
Fewer than 200 measured departures
—
46
46
Oct
Fewer than 200 measured departures
—
61
61
Nov
Fewer than 200 measured departures
—
95
95
Dec
Fewer than 200 measured departures
—
106
106
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 time85.7%1,144
Delayed >15 min14.3%191
Cancelled0.0%0
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.