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 delay08:00–09:00-1.0min · 262 recorded · 262 measured
Gap to highest-delay hour9.8min08:00 ↔ 16:00
Recorded flights2,082BZN–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
8.83.9-1.0
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
3191600
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
Fewer than 200 measured departures
—
35
35
07:00
Fewer than 200 measured departures
—
47
47
08:00
95.4%
-1.0 min
262
262
09:00
Fewer than 200 measured departures
—
130
130
10:00
Fewer than 200 measured departures
—
186
187
11:00
87.2%
7.2 min
282
283
12:00
Fewer than 200 measured departures
—
99
99
13:00
91.5%
0.2 min
319
319
14:00
Fewer than 200 measured departures
—
37
37
15:00
87.9%
6.1 min
264
268
16:00
84.6%
8.8 min
220
220
17:00
Fewer than 200 measured departures
—
75
75
18:00
Fewer than 200 measured departures
—
35
35
19:00
Fewer than 200 measured departures
—
85
85
20:00
No observations
—
—
—
21:00
No observations
—
—
—
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
6.82.1-2.6
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
3341670
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
89.5%
3.9 min
285
285
Tuesday
90.4%
4.4 min
260
260
Wednesday
93.6%
-2.6 min
279
281
Thursday
86.8%
6.2 min
304
306
Friday
88.8%
6.8 min
304
306
Saturday
88.6%
5.3 min
334
334
Sunday
87.4%
2.6 min
310
310
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
8.74.30.0
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
2701350
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
91.4%
0.5 min
268
270
Feb
86.9%
6.4 min
222
224
Mar
88.7%
2.4 min
257
257
Apr
Fewer than 200 measured departures
—
121
121
May
Fewer than 200 measured departures
—
177
179
Jun
Fewer than 200 measured departures
—
193
193
Jul
Fewer than 200 measured departures
—
195
195
Aug
Fewer than 200 measured departures
—
108
108
Sep
Fewer than 200 measured departures
—
93
93
Oct
Fewer than 200 measured departures
—
102
102
Nov
Fewer than 200 measured departures
—
120
120
Dec
82.3%
8.7 min
220
220
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 time89.0%1,852
Delayed >15 min10.8%224
Cancelled0.3%6
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.