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 delay06:00–07:000.5min · 340 recorded · 326 measured
Gap to highest-delay hour41.9min06:00 ↔ 20:00
Recorded flights11,448DJT–LGA
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
42.421.20.0
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
2,0041,0020
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
Fewer than 200 measured departures
—
1
1
06:00
92.0%
0.5 min
326
340
07:00
92.3%
1.9 min
1,956
2,004
08:00
85.5%
15.6 min
242
251
09:00
83.4%
8.9 min
652
671
10:00
75.8%
14.5 min
664
680
11:00
80.8%
12.1 min
1,268
1,295
12:00
77.7%
19.5 min
349
358
13:00
66.3%
22.5 min
661
678
14:00
70.0%
20.0 min
574
597
15:00
59.9%
29.7 min
1,248
1,285
16:00
68.7%
26.8 min
511
533
17:00
57.8%
35.6 min
353
369
18:00
55.2%
39.2 min
614
639
19:00
59.9%
30.1 min
1,288
1,344
20:00
58.0%
42.4 min
350
370
21:00
Fewer than 200 measured departures
—
33
33
22:00
No observations
—
—
—
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
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
25.712.80.0
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
1,7198600
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
71.4%
23.0 min
1,596
1,684
Tuesday
77.7%
14.8 min
1,522
1,576
Wednesday
76.0%
15.2 min
1,578
1,612
Thursday
70.9%
22.8 min
1,637
1,674
Friday
73.3%
17.6 min
1,671
1,704
Saturday
75.9%
14.9 min
1,446
1,479
Sunday
68.7%
25.7 min
1,640
1,719
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
26.113.00.0
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
1,3506750
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
73.0%
19.1 min
1,216
1,266
Feb
73.3%
17.9 min
1,142
1,200
Mar
70.2%
22.1 min
1,291
1,350
Apr
76.2%
16.1 min
1,230
1,236
May
73.6%
20.1 min
1,018
1,036
Jun
74.2%
23.4 min
833
862
Jul
67.3%
26.1 min
743
814
Aug
75.3%
20.8 min
385
400
Sep
85.0%
11.7 min
326
328
Oct
79.1%
12.7 min
698
710
Nov
77.6%
12.3 min
1,027
1,040
Dec
66.1%
24.5 min
1,181
1,206
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 time71.0%8,131
Delayed >15 min25.8%2,959
Cancelled3.1%358
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.