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 delay07:00–08:001.1min · 748 recorded · 732 measured
Gap to highest-delay hour17.6min07:00 ↔ 19:00
Recorded flights9,894ATL–RIC
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
18.79.30.0
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
1,0155080
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
No observations
—
—
—
01:00
No observations
—
—
—
02:00
No observations
—
—
—
03:00
No observations
—
—
—
04:00
No observations
—
—
—
05:00
93.1%
2.2 min
565
577
06:00
89.5%
8.2 min
408
416
07:00
93.7%
1.1 min
732
748
08:00
89.2%
5.7 min
658
668
09:00
89.9%
5.4 min
288
291
10:00
88.6%
3.8 min
992
1,015
11:00
Fewer than 200 measured departures
—
188
192
12:00
87.5%
4.6 min
752
759
13:00
84.1%
6.9 min
697
707
14:00
Fewer than 200 measured departures
—
193
194
15:00
81.6%
9.4 min
804
811
16:00
77.3%
12.7 min
537
544
17:00
77.4%
13.1 min
614
620
18:00
70.6%
17.7 min
446
452
19:00
73.0%
18.7 min
738
751
20:00
72.1%
17.9 min
222
224
21:00
70.8%
17.5 min
274
280
22:00
76.0%
13.8 min
512
524
23:00
Fewer than 200 measured departures
—
119
121
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
15.17.50.0
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
1,5237620
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
79.7%
11.7 min
1,495
1,523
Tuesday
86.3%
6.2 min
1,360
1,366
Wednesday
88.4%
4.2 min
1,343
1,350
Thursday
88.2%
3.3 min
1,479
1,486
Friday
82.2%
9.9 min
1,474
1,506
Saturday
81.9%
10.7 min
1,157
1,187
Sunday
76.6%
15.1 min
1,431
1,476
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
18.79.30.0
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
9784890
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
85.8%
6.2 min
790
834
Feb
87.6%
6.3 min
790
794
Mar
83.0%
10.1 min
956
978
Apr
85.2%
6.2 min
910
922
May
84.6%
7.0 min
922
922
Jun
80.5%
10.8 min
924
944
Jul
72.9%
18.7 min
962
978
Aug
81.7%
12.4 min
454
460
Sep
89.0%
1.9 min
418
418
Oct
88.0%
4.5 min
784
784
Nov
87.8%
5.9 min
882
898
Dec
78.4%
10.8 min
947
962
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 time82.0%8,112
Delayed >15 min16.4%1,627
Cancelled1.6%155
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.