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 delay06:00–07:001.6min · 886 recorded · 875 measured
Gap to highest-delay hour28.6min06:00 ↔ 18:00
Recorded flights6,097BOS–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
30.215.10.0
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
8864430
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
91.8%
1.6 min
875
886
07:00
Fewer than 200 measured departures
—
192
199
08:00
89.0%
2.4 min
374
380
09:00
90.7%
2.8 min
420
423
10:00
88.7%
2.4 min
335
342
11:00
83.0%
6.8 min
569
579
12:00
79.0%
10.2 min
300
301
13:00
Fewer than 200 measured departures
—
139
148
14:00
74.8%
18.8 min
294
303
15:00
74.8%
13.6 min
282
287
16:00
69.8%
14.8 min
377
390
17:00
71.7%
14.7 min
325
331
18:00
61.1%
30.2 min
378
405
19:00
71.6%
13.8 min
373
380
20:00
61.5%
25.2 min
478
494
21:00
66.0%
20.1 min
238
245
22:00
Fewer than 200 measured departures
—
3
3
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
14.57.20.0
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
9504750
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
78.9%
13.1 min
909
950
Tuesday
79.0%
9.5 min
837
860
Wednesday
81.9%
6.2 min
836
852
Thursday
78.2%
10.7 min
905
916
Friday
78.2%
12.6 min
927
936
Saturday
81.7%
9.2 min
671
683
Sunday
75.2%
14.5 min
868
900
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
21.210.60.0
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
6183090
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
80.9%
10.5 min
387
413
Feb
80.6%
10.4 min
366
397
Mar
82.1%
6.6 min
548
556
Apr
84.8%
3.5 min
564
564
May
78.3%
10.2 min
612
612
Jun
77.6%
11.8 min
588
593
Jul
72.7%
21.2 min
560
600
Aug
84.8%
6.9 min
296
298
Sep
71.0%
14.7 min
321
328
Oct
75.2%
11.2 min
548
558
Nov
80.3%
10.9 min
615
618
Dec
79.2%
12.9 min
548
560
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 time77.0%4,697
Delayed >15 min20.6%1,256
Cancelled2.4%144
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.