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 delay06:00–07:008.7min · 625 recorded · 608 measured
Gap to highest-delay hour39.0min06:00 ↔ 22:00
Recorded flights6,110DFW–SMF
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
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
47.623.80.0
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
1,0915460
00:0003:0006:0009:0012:0015:0018:0021:00
Hover, tap or focus a point to see its value, sample and source.
View the figures
Departure hour
On-time departures
Average departure delay
With departure time
Recorded flights
00:00
Fewer than 200 measured departures
—
16
17
01:00
Fewer than 200 measured departures
—
17
18
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
Fewer than 200 measured departures
—
128
129
06:00
91.0%
8.7 min
608
625
07:00
78.0%
18.0 min
268
272
08:00
84.9%
10.2 min
903
924
09:00
Fewer than 200 measured departures
—
2
2
10:00
Fewer than 200 measured departures
—
127
128
11:00
74.5%
14.5 min
1,073
1,091
12:00
Fewer than 200 measured departures
—
72
76
13:00
Fewer than 200 measured departures
—
23
23
14:00
69.7%
23.4 min
607
620
15:00
Fewer than 200 measured departures
—
42
46
16:00
Fewer than 200 measured departures
—
131
132
17:00
59.3%
30.7 min
472
487
18:00
Fewer than 200 measured departures
—
49
50
19:00
Fewer than 200 measured departures
—
118
121
20:00
Fewer than 200 measured departures
—
185
188
21:00
62.2%
26.4 min
407
420
22:00
42.9%
47.6 min
317
333
23:00
73.5%
18.7 min
393
408
Day of week
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
MonTueWedThuFriSatSun
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
28.714.40.0
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
9304650
MonTueWedThuFriSatSun
Hover, tap or focus a point to see its value, sample and source.
View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
69.6%
24.1 min
854
876
Tuesday
75.0%
15.2 min
804
829
Wednesday
74.4%
14.3 min
820
832
Thursday
74.2%
15.1 min
877
902
Friday
71.3%
23.5 min
863
882
Saturday
70.1%
20.0 min
835
859
Sunday
68.7%
28.7 min
905
930
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
38.319.10.0
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
6263130
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
79.8%
13.6 min
491
536
Feb
78.7%
11.8 min
470
472
Mar
76.7%
13.9 min
563
570
Apr
74.0%
15.3 min
561
571
May
69.4%
22.5 min
575
592
Jun
57.4%
38.3 min
577
598
Jul
58.3%
35.8 min
616
626
Aug
66.6%
26.8 min
305
313
Sep
79.3%
15.4 min
242
244
Oct
76.8%
16.5 min
486
492
Nov
77.3%
11.9 min
529
543
Dec
74.6%
16.5 min
543
553
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 time70.0%4,280
Delayed >15 min27.5%1,678
Cancelled2.5%152
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.