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 · Jun 5, 2025 → Jul 31, 2026
Lowest average delay07:00–08:007.4min · 243 recorded · 238 measured
Gap to highest-delay hour15.6min07:00 ↔ 16:00
Recorded flights1,605EVV–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
23.011.50.0
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
2971490
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
—
1
1
06:00
Fewer than 200 measured departures
—
174
176
07:00
91.2%
7.4 min
238
243
08:00
No observations
—
—
—
09:00
No observations
—
—
—
10:00
No observations
—
—
—
11:00
No observations
—
—
—
12:00
Fewer than 200 measured departures
—
3
3
13:00
No observations
—
—
—
14:00
Fewer than 200 measured departures
—
79
85
15:00
Fewer than 200 measured departures
—
101
102
16:00
73.8%
23.0 min
229
240
17:00
Fewer than 200 measured departures
—
150
154
18:00
Fewer than 200 measured departures
—
154
165
19:00
Fewer than 200 measured departures
—
61
69
20:00
Fewer than 200 measured departures
—
36
36
21:00
No observations
—
—
—
22:00
66.1%
20.4 min
283
297
23:00
Fewer than 200 measured departures
—
29
34
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
26.313.10.0
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
2361180
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
74.3%
16.7 min
218
236
Tuesday
80.1%
12.0 min
211
216
Wednesday
81.6%
12.4 min
223
232
Thursday
81.6%
10.3 min
223
233
Friday
78.2%
12.4 min
229
236
Saturday
75.6%
26.3 min
209
218
Sunday
78.7%
12.6 min
225
234
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
20.010.00.0
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
2341170
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
Fewer than 200 measured departures
—
112
114
Feb
Fewer than 200 measured departures
—
110
110
Mar
Fewer than 200 measured departures
—
113
124
Apr
Fewer than 200 measured departures
—
114
120
May
Fewer than 200 measured departures
—
100
102
Jun
Fewer than 200 measured departures
—
196
211
Jul
70.9%
20.0 min
220
234
Aug
Fewer than 200 measured departures
—
110
116
Sep
Fewer than 200 measured departures
—
114
114
Oct
Fewer than 200 measured departures
—
122
122
Nov
Fewer than 200 measured departures
—
110
118
Dec
Fewer than 200 measured departures
—
117
120
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 time75.3%1,209
Delayed >15 min20.5%329
Cancelled4.2%67
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.