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 delay10:00–11:00-1.7min · 201 recorded · 200 measured
Gap to highest-delay hour11.7min10:00 ↔ 13:00
Recorded flights2,922EWR–GRR
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
10.04.2-1.7
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
5602800
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
Fewer than 200 measured departures
—
1
1
06:00
93.6%
2.2 min
527
544
07:00
Fewer than 200 measured departures
—
90
92
08:00
Fewer than 200 measured departures
—
11
11
09:00
91.2%
0.7 min
468
479
10:00
91.5%
-1.7 min
200
201
11:00
Fewer than 200 measured departures
—
35
35
12:00
Fewer than 200 measured departures
—
70
74
13:00
81.0%
10.0 min
532
560
14:00
Fewer than 200 measured departures
—
57
57
15:00
Fewer than 200 measured departures
—
76
77
16:00
Fewer than 200 measured departures
—
63
73
17:00
Fewer than 200 measured departures
—
62
63
18:00
84.8%
7.6 min
217
223
19:00
Fewer than 200 measured departures
—
157
176
20:00
Fewer than 200 measured departures
—
53
57
21:00
Fewer than 200 measured departures
—
182
199
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
10.15.10.0
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
4452230
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
87.3%
4.8 min
385
406
Tuesday
89.9%
2.6 min
386
407
Wednesday
88.4%
4.7 min
395
406
Thursday
84.2%
7.5 min
431
445
Friday
83.8%
10.1 min
401
412
Saturday
85.6%
7.9 min
388
403
Sunday
85.1%
8.7 min
415
443
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
16.68.30.0
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
3521760
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
91.6%
1.5 min
237
248
Feb
88.9%
3.7 min
208
221
Mar
85.2%
6.4 min
237
248
Apr
87.8%
3.0 min
204
207
May
85.8%
6.4 min
240
257
Jun
88.6%
4.7 min
315
325
Jul
81.5%
16.6 min
313
352
Aug
Fewer than 200 measured departures
—
133
136
Sep
Fewer than 200 measured departures
—
168
170
Oct
86.9%
4.8 min
274
276
Nov
85.7%
5.1 min
231
235
Dec
83.0%
9.6 min
241
247
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 time82.7%2,416
Delayed >15 min13.2%385
Cancelled4.1%121
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.