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 delay08:00–09:005.4min · 528 recorded · 525 measured
Gap to highest-delay hour15.8min08:00 ↔ 17:00
Recorded flights1,830SAN–TPA
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
21.310.60.0
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
5282640
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
No observations
—
—
—
06:00
No observations
—
—
—
07:00
Fewer than 200 measured departures
—
30
30
08:00
85.5%
5.4 min
525
528
09:00
77.3%
16.0 min
282
287
10:00
Fewer than 200 measured departures
—
28
28
11:00
Fewer than 200 measured departures
—
33
33
12:00
Fewer than 200 measured departures
—
1
1
13:00
Fewer than 200 measured departures
—
141
142
14:00
Fewer than 200 measured departures
—
164
165
15:00
Fewer than 200 measured departures
—
139
140
16:00
Fewer than 200 measured departures
—
148
148
17:00
61.7%
21.3 min
222
225
18:00
Fewer than 200 measured departures
—
69
69
19:00
Fewer than 200 measured departures
—
34
34
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
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
20.610.30.0
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
2881440
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
73.4%
13.5 min
263
266
Tuesday
75.5%
10.2 min
224
226
Wednesday
75.8%
9.2 min
244
244
Thursday
78.5%
11.9 min
256
260
Friday
72.2%
20.6 min
270
272
Saturday
69.8%
15.5 min
285
288
Sunday
70.4%
12.8 min
274
274
Month of year
Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.
Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
194970
JanFebMarAprMayJunJulAugSepOctNovDec
Hover, tap or focus a point to see its value, sample and source.
No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.
View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
Fewer than 200 measured departures
—
169
170
Feb
Fewer than 200 measured departures
—
152
152
Mar
Fewer than 200 measured departures
—
173
174
Apr
Fewer than 200 measured departures
—
178
180
May
Fewer than 200 measured departures
—
186
186
Jun
Fewer than 200 measured departures
—
185
188
Jul
Fewer than 200 measured departures
—
191
194
Aug
Fewer than 200 measured departures
—
72
72
Sep
Fewer than 200 measured departures
—
66
68
Oct
Fewer than 200 measured departures
—
144
144
Nov
Fewer than 200 measured departures
—
155
156
Dec
Fewer than 200 measured departures
—
145
146
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 time73.0%1,335
Delayed >15 min26.3%481
Cancelled0.8%14
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.