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 delay08:00–09:00-1.2min · 282 recorded · 276 measured
Gap to highest-delay hour19.5min08:00 ↔ 15:00
Recorded flights3,260DFW–MLI
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
18.38.5-1.2
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
5182590
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
—
75
75
06:00
90.8%
8.2 min
458
465
07:00
Fewer than 200 measured departures
—
113
114
08:00
92.4%
-1.2 min
276
282
09:00
Fewer than 200 measured departures
—
44
44
10:00
Fewer than 200 measured departures
—
92
92
11:00
Fewer than 200 measured departures
—
181
188
12:00
82.7%
12.4 min
336
344
13:00
Fewer than 200 measured departures
—
189
195
14:00
Fewer than 200 measured departures
—
132
135
15:00
78.4%
18.3 min
504
518
16:00
Fewer than 200 measured departures
—
67
70
17:00
Fewer than 200 measured departures
—
85
88
18:00
Fewer than 200 measured departures
—
3
3
19:00
85.4%
6.8 min
273
277
20:00
Fewer than 200 measured departures
—
116
118
21:00
79.3%
10.6 min
246
252
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
16.08.00.0
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
4742370
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
81.7%
11.7 min
469
474
Tuesday
90.1%
3.0 min
445
459
Wednesday
84.3%
5.8 min
453
462
Thursday
85.2%
5.0 min
454
462
Friday
87.7%
8.5 min
462
472
Saturday
82.5%
13.3 min
445
459
Sunday
83.1%
16.0 min
462
472
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
17.78.90.0
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
3191600
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
87.4%
8.3 min
270
285
Feb
84.1%
16.0 min
233
234
Mar
82.0%
12.9 min
239
248
Apr
82.0%
8.2 min
284
288
May
85.1%
7.4 min
301
310
Jun
81.3%
8.9 min
284
294
Jul
83.6%
6.3 min
304
306
Aug
Fewer than 200 measured departures
—
175
176
Sep
Fewer than 200 measured departures
—
178
180
Oct
93.7%
0.8 min
303
304
Nov
87.0%
4.1 min
307
319
Dec
82.1%
17.7 min
312
316
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 time83.1%2,709
Delayed >15 min14.8%481
Cancelled2.1%70
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.