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 delay07:00–08:001.8min · 272 recorded · 262 measured
Gap to highest-delay hour16.9min07:00 ↔ 22:00
Recorded flights2,499JFK–SYR
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
18.79.40.0
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
6043020
00:0003:0006:0009:0012:0015:0018:0021:00
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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
—
183
187
06:00
86.6%
6.2 min
290
305
07:00
92.8%
1.8 min
262
272
08:00
Fewer than 200 measured departures
—
74
74
09:00
86.6%
2.8 min
223
226
10:00
Fewer than 200 measured departures
—
97
97
11:00
Fewer than 200 measured departures
—
193
195
12:00
Fewer than 200 measured departures
—
61
63
13:00
Fewer than 200 measured departures
—
104
105
14:00
Fewer than 200 measured departures
—
6
6
15:00
Fewer than 200 measured departures
—
61
61
16:00
Fewer than 200 measured departures
—
51
51
17:00
Fewer than 200 measured departures
—
27
28
18:00
Fewer than 200 measured departures
—
76
77
19:00
Fewer than 200 measured departures
—
23
23
20:00
Fewer than 200 measured departures
—
26
26
21:00
Fewer than 200 measured departures
—
97
98
22:00
69.5%
18.7 min
571
604
23:00
Fewer than 200 measured departures
—
1
1
Day of week
On-time departuresPartial coverage: only airlines that report on-time data to the US DOT
100.050.00.0
MonTueWedThuFriSatSun
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
17.88.90.0
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
3841920
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
80.3%
9.8 min
361
375
Tuesday
84.6%
7.4 min
319
326
Wednesday
84.1%
6.3 min
320
324
Thursday
83.1%
8.1 min
350
355
Friday
80.6%
10.8 min
351
360
Saturday
79.9%
12.0 min
368
384
Sunday
74.0%
17.8 min
357
375
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
19.18.7-1.7
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
3901950
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
77.9%
10.5 min
244
258
Feb
75.3%
19.1 min
223
235
Mar
79.9%
8.9 min
268
271
Apr
Fewer than 200 measured departures
—
182
182
May
Fewer than 200 measured departures
—
145
146
Jun
Fewer than 200 measured departures
—
117
120
Jul
Fewer than 200 measured departures
—
105
124
Aug
Fewer than 200 measured departures
—
61
62
Sep
Fewer than 200 measured departures
—
58
60
Oct
94.0%
-1.7 min
268
273
Nov
85.0%
5.9 min
374
378
Dec
73.5%
19.0 min
381
390
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 time78.5%1,961
Delayed >15 min18.6%465
Cancelled2.9%73
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.