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 delay06:00–07:001.5min · 641 recorded · 640 measured
Gap to highest-delay hour18.1min06:00 ↔ 12:00
Recorded flights6,752RNO–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
19.69.80.0
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
1,0065030
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
94.7%
1.5 min
640
641
07:00
Fewer than 200 measured departures
—
134
135
08:00
83.5%
6.3 min
997
1,006
09:00
Fewer than 200 measured departures
—
15
15
10:00
78.2%
12.7 min
555
562
11:00
69.5%
16.7 min
275
277
12:00
67.5%
19.6 min
249
252
13:00
79.0%
14.3 min
366
368
14:00
70.8%
16.2 min
527
533
15:00
80.2%
11.9 min
252
254
16:00
76.4%
14.1 min
700
718
17:00
No observations
—
—
—
18:00
76.0%
17.8 min
740
758
19:00
81.8%
12.6 min
258
265
20:00
69.4%
18.0 min
242
246
21:00
Fewer than 200 measured departures
—
88
88
22:00
73.2%
16.6 min
630
634
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
20.610.30.0
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
9904950
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
70.0%
19.9 min
976
990
Tuesday
85.5%
5.0 min
946
960
Wednesday
80.0%
10.3 min
968
978
Thursday
74.0%
20.6 min
946
958
Friday
75.0%
15.3 min
968
977
Saturday
86.0%
6.0 min
899
907
Sunday
77.1%
13.8 min
965
982
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
25.212.60.0
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
6923460
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
84.4%
9.7 min
680
685
Feb
78.3%
12.3 min
595
616
Mar
85.3%
5.6 min
673
682
Apr
79.5%
9.4 min
687
692
May
73.1%
18.6 min
687
692
Jun
68.4%
21.6 min
573
574
Jul
61.9%
25.2 min
538
538
Aug
82.6%
7.5 min
242
242
Sep
92.9%
0.8 min
238
240
Oct
82.0%
7.0 min
461
461
Nov
80.6%
13.0 min
623
650
Dec
77.7%
16.3 min
671
680
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 time77.1%5,209
Delayed >15 min21.6%1,459
Cancelled1.2%84
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.