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 delay07:00–08:002.9min · 645 recorded · 626 measured
Gap to highest-delay hour23.4min07:00 ↔ 16:00
Recorded flights3,191LGA–OKC
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
26.313.20.0
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
7703850
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
88.8%
5.7 min
391
416
07:00
90.4%
2.9 min
626
645
08:00
Fewer than 200 measured departures
—
18
18
09:00
Fewer than 200 measured departures
—
81
81
10:00
Fewer than 200 measured departures
—
148
154
11:00
Fewer than 200 measured departures
—
55
59
12:00
83.9%
9.2 min
217
219
13:00
81.5%
11.5 min
249
260
14:00
Fewer than 200 measured departures
—
31
31
15:00
Fewer than 200 measured departures
—
5
5
16:00
70.4%
26.3 min
311
325
17:00
Fewer than 200 measured departures
—
82
90
18:00
73.2%
25.2 min
710
770
19:00
Fewer than 200 measured departures
—
97
105
20:00
Fewer than 200 measured departures
—
12
13
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
22.411.20.0
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
4972490
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
78.4%
22.4 min
463
497
Tuesday
82.3%
12.8 min
462
496
Wednesday
79.9%
10.3 min
468
493
Thursday
77.5%
20.4 min
457
480
Friday
80.1%
22.3 min
467
480
Saturday
86.1%
10.2 min
294
298
Sunday
79.2%
12.8 min
422
447
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
44.822.40.0
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
3301650
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
80.6%
9.1 min
253
276
Feb
80.6%
12.9 min
237
256
Mar
79.1%
14.8 min
268
282
Apr
88.2%
5.2 min
272
273
May
81.3%
12.8 min
267
273
Jun
68.1%
44.8 min
254
276
Jul
74.6%
27.8 min
232
285
Aug
Fewer than 200 measured departures
—
174
176
Sep
Fewer than 200 measured departures
—
162
164
Oct
83.5%
11.5 min
284
290
Nov
82.5%
8.0 min
325
330
Dec
74.1%
19.8 min
305
310
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 time76.2%2,432
Delayed >15 min18.8%601
Cancelled5.0%158
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.