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 delay07:00–08:003.7min · 444 recorded · 432 measured
Gap to highest-delay hour27.1min07:00 ↔ 18:00
Recorded flights2,260MCW–ORD
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
30.815.40.0
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
4442220
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
No observations
—
—
—
06:00
Fewer than 200 measured departures
—
22
22
07:00
82.6%
3.7 min
432
444
08:00
No observations
—
—
—
09:00
Fewer than 200 measured departures
—
143
150
10:00
86.3%
7.3 min
349
359
11:00
Fewer than 200 measured departures
—
29
30
12:00
Fewer than 200 measured departures
—
121
132
13:00
Fewer than 200 measured departures
—
29
30
14:00
Fewer than 200 measured departures
—
82
89
15:00
No observations
—
—
—
16:00
71.4%
18.3 min
406
436
17:00
Fewer than 200 measured departures
—
64
66
18:00
70.2%
30.8 min
265
286
19:00
Fewer than 200 measured departures
—
199
216
20:00
No observations
—
—
—
21:00
No observations
—
—
—
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
19.79.90.0
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
3761880
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
76.8%
19.7 min
354
376
Tuesday
Fewer than 200 measured departures
—
182
194
Wednesday
81.5%
9.5 min
357
374
Thursday
78.9%
13.0 min
351
368
Friday
76.5%
18.2 min
361
376
Saturday
Fewer than 200 measured departures
—
182
196
Sunday
80.2%
10.5 min
354
376
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
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Average departure delayPartial coverage: only airlines that report on-time data to the US DOT
19.39.60.0
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
2161080
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
74.6%
18.9 min
205
214
Feb
Fewer than 200 measured departures
—
188
192
Mar
Fewer than 200 measured departures
—
190
212
Apr
Fewer than 200 measured departures
—
195
206
May
80.4%
12.1 min
209
212
Jun
Fewer than 200 measured departures
—
199
206
Jul
76.5%
19.3 min
204
214
Aug
Fewer than 200 measured departures
—
100
106
Sep
Fewer than 200 measured departures
—
102
102
Oct
Fewer than 200 measured departures
—
176
176
Nov
Fewer than 200 measured departures
—
194
204
Dec
Fewer than 200 measured departures
—
179
216
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 time74.6%1,686
Delayed >15 min20.1%455
Cancelled5.3%119
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.