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 delay08:00–09:000.2min · 315 recorded · 309 measured
Gap to highest-delay hour22.9min08:00 ↔ 18:00
Recorded flights2,879EWR–MKE
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
23.011.50.0
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
3831920
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
86.4%
7.9 min
258
268
07:00
Fewer than 200 measured departures
—
19
19
08:00
92.9%
0.2 min
309
315
09:00
88.4%
3.3 min
292
300
10:00
Fewer than 200 measured departures
—
157
161
11:00
81.5%
14.0 min
324
335
12:00
Fewer than 200 measured departures
—
51
52
13:00
No observations
—
—
—
14:00
No observations
—
—
—
15:00
84.7%
7.4 min
215
232
16:00
86.2%
3.9 min
363
383
17:00
Fewer than 200 measured departures
—
131
147
18:00
70.5%
23.0 min
322
337
19:00
Fewer than 200 measured departures
—
106
123
20:00
Fewer than 200 measured departures
—
5
6
21:00
Fewer than 200 measured departures
—
137
149
22:00
Fewer than 200 measured departures
—
39
52
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
4322160
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
83.0%
10.7 min
401
431
Tuesday
88.2%
2.7 min
406
430
Wednesday
84.4%
8.1 min
417
428
Thursday
79.3%
16.0 min
401
428
Friday
82.6%
12.6 min
424
432
Saturday
81.8%
9.2 min
286
305
Sunday
79.1%
10.0 min
393
425
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
34.317.1-0.1
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
86.8%
0.5 min
234
246
Feb
85.8%
1.5 min
204
219
Mar
88.6%
-0.1 min
219
229
Apr
88.4%
3.9 min
224
230
May
88.9%
4.2 min
217
237
Jun
81.3%
12.8 min
272
283
Jul
72.7%
34.3 min
308
354
Aug
Fewer than 200 measured departures
—
177
180
Sep
Fewer than 200 measured departures
—
161
166
Oct
82.6%
9.3 min
275
277
Nov
79.5%
10.0 min
205
220
Dec
83.2%
8.0 min
232
238
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 time78.4%2,256
Delayed >15 min16.4%472
Cancelled5.2%151
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.