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 delay10:00–11:009.3min · 276 recorded · 274 measured
Gap to highest-delay hour6.8min10:00 ↔ 11:00
Recorded flights1,576CLE–SEA
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
16.28.10.0
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
2761380
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
—
28
28
07:00
75.3%
15.1 min
227
231
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
114
114
10:00
77.7%
9.3 min
274
276
11:00
65.9%
16.2 min
220
224
12:00
No observations
—
—
—
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
No observations
—
—
—
16:00
No observations
—
—
—
17:00
Fewer than 200 measured departures
—
75
75
18:00
69.3%
14.1 min
244
247
19:00
Fewer than 200 measured departures
—
118
120
20:00
Fewer than 200 measured departures
—
65
67
21:00
Fewer than 200 measured departures
—
97
97
22:00
Fewer than 200 measured departures
—
97
97
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
16.78.40.0
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
2461230
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
67.1%
16.4 min
240
244
Tuesday
Fewer than 200 measured departures
—
198
200
Wednesday
74.6%
11.4 min
228
229
Thursday
76.4%
9.3 min
237
239
Friday
68.7%
14.1 min
243
246
Saturday
Fewer than 200 measured departures
—
171
173
Sunday
70.7%
16.7 min
242
245
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
16.88.40.0
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
2441220
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
—
78
83
Feb
Fewer than 200 measured departures
—
76
76
Mar
Fewer than 200 measured departures
—
100
103
Apr
Fewer than 200 measured departures
—
120
120
May
Fewer than 200 measured departures
—
188
188
Jun
73.4%
14.8 min
233
234
Jul
68.1%
16.8 min
241
244
Aug
Fewer than 200 measured departures
—
113
114
Sep
Fewer than 200 measured departures
—
95
95
Oct
Fewer than 200 measured departures
—
102
105
Nov
Fewer than 200 measured departures
—
103
104
Dec
Fewer than 200 measured departures
—
110
110
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 time71.2%1,122
Delayed >15 min27.7%437
Cancelled1.1%17
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.