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 delay11:00–12:0011.2min · 247 recorded · 246 measured
Gap to highest-delay hour44.3min11:00 ↔ 22:00
Recorded flights3,447RDD–SFO
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
55.527.80.0
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
4522260
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
88.2%
20.6 min
245
247
06:00
90.3%
12.7 min
320
321
07:00
Fewer than 200 measured departures
—
57
60
08:00
Fewer than 200 measured departures
—
124
124
09:00
Fewer than 200 measured departures
—
80
80
10:00
75.3%
22.1 min
308
308
11:00
81.3%
11.2 min
246
247
12:00
Fewer than 200 measured departures
—
53
53
13:00
No observations
—
—
—
14:00
78.1%
16.6 min
451
452
15:00
No observations
—
—
—
16:00
74.6%
17.2 min
354
375
17:00
Fewer than 200 measured departures
—
88
92
18:00
75.7%
22.4 min
329
341
19:00
Fewer than 200 measured departures
—
88
91
20:00
Fewer than 200 measured departures
—
112
112
21:00
Fewer than 200 measured departures
—
120
123
22:00
75.9%
55.5 min
419
421
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
31.215.60.0
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
5132570
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
79.0%
21.3 min
500
508
Tuesday
83.8%
14.9 min
470
477
Wednesday
78.3%
22.6 min
498
503
Thursday
77.5%
31.2 min
498
513
Friday
76.3%
29.1 min
493
499
Saturday
85.3%
13.8 min
455
461
Sunday
77.5%
28.2 min
480
486
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
49.224.60.0
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
3631820
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
85.8%
13.1 min
330
330
Feb
82.6%
14.4 min
304
310
Mar
78.8%
31.8 min
302
306
Apr
79.4%
16.0 min
281
282
May
78.9%
26.3 min
322
324
Jun
74.8%
19.4 min
341
342
Jul
74.6%
18.0 min
347
348
Aug
Fewer than 200 measured departures
—
176
176
Sep
Fewer than 200 measured departures
—
125
125
Oct
Fewer than 200 measured departures
—
185
185
Nov
80.1%
24.3 min
337
356
Dec
77.0%
49.2 min
344
363
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%2,701
Delayed >15 min20.1%693
Cancelled1.5%53
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.