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 delay20:00–21:00-5.6min · 252 recorded · 246 measured
Gap to highest-delay hour6.9min20:00 ↔ 11:00
Recorded flights5,439PDX–SNA
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
1.3-2.2-5.6
00:0003:0006:0009:0012:0015:0018:0021:00
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Recorded flightsPartial coverage: only airlines that report on-time data to the US DOT
1,1005500
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
—
188
191
07:00
95.3%
-2.3 min
1,087
1,100
08:00
Fewer than 200 measured departures
—
16
16
09:00
Fewer than 200 measured departures
—
199
200
10:00
92.6%
-0.3 min
785
790
11:00
91.2%
1.3 min
228
229
12:00
Fewer than 200 measured departures
—
59
60
13:00
89.2%
1.0 min
295
300
14:00
90.2%
0.7 min
783
787
15:00
Fewer than 200 measured departures
—
148
149
16:00
Fewer than 200 measured departures
—
73
74
17:00
89.9%
0.7 min
327
332
18:00
92.5%
-0.9 min
477
481
19:00
93.0%
-2.7 min
370
378
20:00
94.3%
-5.6 min
246
252
21:00
Fewer than 200 measured departures
—
97
100
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
1.0-1.0-3.0
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
8154080
MonTueWedThuFriSatSun
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View the figures
Day of week
On-time departures
Average departure delay
With departure time
Recorded flights
Monday
92.4%
-1.2 min
805
815
Tuesday
93.1%
-1.9 min
743
749
Wednesday
92.8%
-1.8 min
739
743
Thursday
91.9%
0.6 min
777
792
Friday
93.2%
0.2 min
794
803
Saturday
94.2%
-3.0 min
720
724
Sunday
90.1%
1.0 min
800
813
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
4.30.2-3.9
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
5652830
JanFebMarAprMayJunJulAugSepOctNovDec
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View the figures
Month of year
On-time departures
Average departure delay
With departure time
Recorded flights
Jan
93.2%
-0.6 min
467
474
Feb
94.1%
-2.1 min
405
414
Mar
91.9%
0.3 min
471
474
Apr
95.6%
-1.7 min
475
480
May
93.7%
-1.1 min
494
496
Jun
93.5%
-0.2 min
463
466
Jul
92.0%
-0.7 min
476
484
Aug
92.7%
-2.2 min
260
266
Sep
95.6%
-3.9 min
294
294
Oct
93.0%
-2.2 min
457
464
Nov
92.2%
-2.4 min
562
565
Dec
85.4%
4.3 min
554
562
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 time91.5%4,975
Delayed >15 min7.4%403
Cancelled1.1%61
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.