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 delay06:00–07:004.2min · 438 recorded · 433 measured
Gap to highest-delay hour17.3min06:00 ↔ 16:00
Recorded flights3,591BNA–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
21.510.70.0
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
4382190
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
86.6%
4.2 min
433
438
07:00
Fewer than 200 measured departures
—
93
97
08:00
Fewer than 200 measured departures
—
194
195
09:00
86.4%
4.5 min
352
352
10:00
Fewer than 200 measured departures
—
187
187
11:00
77.2%
11.8 min
285
288
12:00
Fewer than 200 measured departures
—
118
119
13:00
Fewer than 200 measured departures
—
84
84
14:00
67.2%
18.3 min
244
244
15:00
Fewer than 200 measured departures
—
18
18
16:00
69.1%
21.5 min
362
365
17:00
Fewer than 200 measured departures
—
187
187
18:00
64.5%
19.1 min
332
334
19:00
No observations
—
—
—
20:00
No observations
—
—
—
21:00
Fewer than 200 measured departures
—
1
1
22:00
65.1%
19.0 min
261
261
23:00
81.9%
7.6 min
420
421
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
17.28.60.0
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
5772890
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
69.9%
15.9 min
539
540
Tuesday
80.6%
11.1 min
423
424
Wednesday
77.2%
13.0 min
465
467
Thursday
71.4%
15.7 min
563
565
Friday
70.6%
13.4 min
562
566
Saturday
80.4%
11.0 min
448
452
Sunday
68.1%
17.2 min
571
577
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
21.911.00.0
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
4482240
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
—
189
200
Feb
77.2%
9.9 min
241
241
Mar
76.1%
11.5 min
347
347
Apr
78.5%
11.6 min
368
368
May
69.0%
17.3 min
384
384
Jun
65.3%
19.9 min
429
430
Jul
66.7%
21.9 min
441
448
Aug
Fewer than 200 measured departures
—
177
178
Sep
Fewer than 200 measured departures
—
183
183
Oct
83.0%
6.8 min
283
283
Nov
76.4%
11.1 min
292
292
Dec
69.2%
15.9 min
237
237
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 time73.1%2,625
Delayed >15 min26.3%946
Cancelled0.6%20
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.