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 delay07:00–08:00-1.0min · 748 recorded · 731 measured
Gap to highest-delay hour21.5min07:00 ↔ 22:00
Recorded flights6,191JFK–PIT
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
20.59.8-1.0
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
8414210
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
—
31
33
06:00
94.3%
0.4 min
477
498
07:00
94.7%
-1.0 min
731
748
08:00
Fewer than 200 measured departures
—
90
94
09:00
89.9%
2.1 min
444
451
10:00
Fewer than 200 measured departures
—
54
55
11:00
84.6%
8.8 min
318
324
12:00
85.5%
8.2 min
365
377
13:00
86.0%
2.4 min
278
282
14:00
82.6%
9.0 min
684
695
15:00
81.3%
8.4 min
359
368
16:00
Fewer than 200 measured departures
—
62
64
17:00
79.9%
11.5 min
407
427
18:00
79.7%
13.5 min
305
308
19:00
72.4%
17.9 min
775
841
20:00
Fewer than 200 measured departures
—
145
164
21:00
Fewer than 200 measured departures
—
168
186
22:00
70.2%
20.5 min
265
276
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
13.26.60.0
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
9084540
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
82.7%
10.0 min
844
886
Tuesday
85.2%
5.9 min
835
875
Wednesday
85.4%
6.8 min
855
875
Thursday
80.5%
11.9 min
844
875
Friday
82.3%
11.9 min
866
884
Saturday
83.3%
8.9 min
875
908
Sunday
79.9%
13.2 min
839
888
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
20.910.50.0
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
6423210
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
82.8%
6.1 min
465
491
Feb
84.8%
8.6 min
427
458
Mar
83.8%
10.7 min
494
504
Apr
84.7%
7.2 min
482
483
May
83.1%
11.2 min
598
608
Jun
76.3%
16.3 min
579
599
Jul
73.6%
20.9 min
531
620
Aug
87.1%
3.4 min
303
310
Sep
87.1%
6.5 min
350
356
Oct
89.2%
5.0 min
557
566
Nov
87.5%
4.0 min
626
642
Dec
76.4%
13.2 min
546
554
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 time79.6%4,930
Delayed >15 min16.6%1,028
Cancelled3.8%233
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.