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Korean Air Delay Rate, Cancellations & On-Time Performance KE

On-time departure and arrival rates compiled from operational records, covering every flight operated to and from Japan. Switch the period with the tabs below.

Delay rate 6.8% Delay rate is the share of flights departing more than 15 minutes after schedule (100% − on-time departure)

93.2% On-time departure 90.8% On-time arrival

Cancellation: 0.1% / Avg delay when late: 39min

Last 28 days ・ 1821 flights ・ Includes estimates 150 estimated

Some airlines do not publish gate departure/arrival times. For those flights we estimate the gate times from the takeoff/landing record and the airport's measured taxi times (validated at 3.5 min mean error, 94.4% agreement on the on-time call). Without the estimate, those airlines' flights would drop out of the sample entirely and cross-airline comparison would break.

Daily · Last 30 days

On-time departureOn timeDelayed
70%80%90%100%0100 93.3%79.1%95.5%2026-09-0666 flights ・ Avg delay when late +35minOn time 63 ・ Delayed 388.9%2026-09-0763 flights ・ Avg delay when late +41minOn time 56 ・ Delayed 798.5%2026-09-0865 flights ・ Avg delay when late +16minOn time 64 ・ Delayed 179.1%2026-09-0967 flights ・ Avg delay when late +57minOn time 53 ・ Delayed 1497%2026-09-1066 flights ・ Avg delay when late +22minOn time 64 ・ Delayed 298.6%2026-09-1170 flights ・ Avg delay when late +29minOn time 69 ・ Delayed 198.5%2026-09-1267 flights ・ Avg delay when late +17minOn time 66 ・ Delayed 196.9%2026-09-1365 flights ・ Avg delay when late +25minOn time 63 ・ Delayed 293.7%2026-09-1463 flights ・ Avg delay when late +21minOn time 59 ・ Delayed 483.1%2026-09-1565 flights ・ Avg delay when late +30minOn time 54 ・ Delayed 1189.9%2026-09-1669 flights ・ Avg delay when late +24minOn time 62 ・ Delayed 798.5%2026-09-1767 flights ・ Avg delay when late +23minOn time 66 ・ Delayed 194.3%2026-09-1870 flights ・ Avg delay when late +24minOn time 66 ・ Delayed 497%2026-09-1967 flights ・ Avg delay when late +20minOn time 65 ・ Delayed 296.9%2026-09-2065 flights ・ Avg delay when late +17minOn time 63 ・ Delayed 289.1%2026-09-2155 flights ・ Avg delay when late +63minOn time 49 ・ Delayed 692.5%2026-09-2267 flights ・ Avg delay when late +184minOn time 62 ・ Delayed 588.7%2026-09-2371 flights ・ Avg delay when late +22minOn time 63 ・ Delayed 894.3%2026-09-2470 flights ・ Avg delay when late +22minOn time 66 ・ Delayed 494.4%2026-09-2571 flights ・ Avg delay when late +20minOn time 67 ・ Delayed 494%2026-09-2667 flights ・ Avg delay when late +22minOn time 63 ・ Delayed 490.1%2026-09-2771 flights ・ Avg delay when late +28minOn time 64 ・ Delayed 786.6%2026-09-2867 flights ・ Avg delay when late +33minOn time 58 ・ Delayed 992.4%2026-09-2966 flights ・ Avg delay when late +26minOn time 61 ・ Delayed 594.5%2026-09-3073 flights ・ Avg delay when late +24minOn time 69 ・ Delayed 497%2026-10-0167 flights ・ Avg delay when late +22minOn time 65 ・ Delayed 294.4%2026-10-0272 flights ・ Avg delay when late +18minOn time 68 ・ Delayed 497.1%2026-10-0369 flights ・ Avg delay when late +24minOn time 67 ・ Delayed 293.8%2026-10-04 (Provisional)64 flights ・ Avg delay when late +26minOn time 60 ・ Delayed 493.3%2026-10-05 (Provisional)60 flights ・ Avg delay when late +76minOn time 56 ・ Delayed 4
Sep 6Sep 12Sep 18Sep 24Oct 5

Line = on-time departure rate (left axis); bars = flights operated (right axis), stacked as on-time and delayed. Hover (or tap) a point for the breakdown and the average delay of delayed flights. The green band marks 90% on-time departures and above. Dashed segments and pale bars are provisional, before the actuals are final.

Weekly · Last 12 weeks (from Monday)

On-time departureOn timeDelayed
80%90%100%0500 93.3%85.2%89.9%Week of 2026-07-20415 flights ・ Avg delay when late +27minOn time 373 ・ Delayed 4291.9%Week of 2026-07-27447 flights ・ Avg delay when late +28minOn time 411 ・ Delayed 3694.4%Week of 2026-08-03468 flights ・ Avg delay when late +33minOn time 442 ・ Delayed 2685.8%Week of 2026-08-10450 flights ・ Avg delay when late +34minOn time 386 ・ Delayed 6491.4%Week of 2026-08-17467 flights ・ Avg delay when late +35minOn time 427 ・ Delayed 4085.2%Week of 2026-08-24473 flights ・ Avg delay when late +42minOn time 403 ・ Delayed 7091.4%Week of 2026-08-31467 flights ・ Avg delay when late +35minOn time 427 ・ Delayed 4094%Week of 2026-09-07463 flights ・ Avg delay when late +44minOn time 435 ・ Delayed 2893.3%Week of 2026-09-14466 flights ・ Avg delay when late +25minOn time 435 ・ Delayed 3191.9%Week of 2026-09-21472 flights ・ Avg delay when late +52minOn time 434 ・ Delayed 3893.7%Week of 2026-09-28 (Provisional)478 flights ・ Avg delay when late +26minOn time 448 ・ Delayed 3093.3%Week of 2026-10-05 (Provisional)60 flights ・ Avg delay when late +76minOn time 56 ・ Delayed 4
Jul 20Aug 10Aug 31Oct 5

Line = on-time departure rate (left axis); bars = flights operated (right axis), stacked as on-time and delayed. Hover (or tap) a point for the breakdown and the average delay of delayed flights. The green band marks 90% on-time departures and above. Dashed segments and pale bars are provisional, before the actuals are final.

Monthly · Last 12 months

On-time departureOn timeDelayed
80%90%100%02500 95.2%89.3%91.2%2026-071070 flights ・ Avg delay when late +28minOn time 976 ・ Delayed 9489.3%2026-082056 flights ・ Avg delay when late +36minOn time 1835 ・ Delayed 22192.9%2026-092010 flights ・ Avg delay when late +38minOn time 1867 ・ Delayed 14395.2%2026-10 (Provisional)332 flights ・ Avg delay when late +36minOn time 316 ・ Delayed 16
JulAugSepOct

Line = on-time departure rate (left axis); bars = flights operated (right axis), stacked as on-time and delayed. Hover (or tap) a point for the breakdown and the average delay of delayed flights. The green band marks 90% on-time departures and above. Dashed segments and pale bars are provisional, before the actuals are final.

“Provisional” values are preliminary. The last 2 days are still being corrected, so they may change slightly.

By route

Last 24 months

Most punctual

DepnArr
Kumamoto→Incheon 1 KMJ-ICN
97.8%n=4697.8%
Gimpo→Kansai 2 GMP-KIX
97.3%n=14695.9%
Gimhae→Chubu Centrair 3 PUS-NGO
97.3%n=7395.9%
Gimhae→NaritaPUS-NRT
97.2%n=14489.6%
Nagasaki→IncheonNGS-ICN
96.9%n=32100.0%
Kansai→GimpoKIX-GMP
95.9%n=14693.8%
Tokyo Haneda→IncheonHND-ICN
95.9%n=7397.3%
Incheon→FukuokaICN-FUK
95.4%n=28488.4%
Tokyo Haneda→GimpoHND-GMP
95.4%n=21990.8%
Kansai→IncheonKIX-ICN
95.2%n=33589.0%

Least punctual

DepnArr
Naha→Incheon 1 OKA-ICN
43.7%n=7143.7%
Incheon→Naha 2 ICN-OKA
63.4%n=7180.3%
Okayama Momotaro→Incheon 3 OKJ-ICN
78.0%n=4178.0%
Incheon→Chubu CentrairICN-NGO
79.5%n=14678.8%
Narita→JejuNRT-CJU
85.4%n=4187.8%
New Chitose→IncheonCTS-ICN
86.4%n=16992.9%
Incheon→New ChitoseICN-CTS
87.6%n=16989.9%
Jeju→NaritaCJU-NRT
87.8%n=4190.2%
Narita→GimhaeNRT-PUS
88.9%n=14489.6%
Incheon→NaritaICN-NRT
89.1%n=43974.3%

Routes flown

Routes not in the ranking above, ordered by flights in the last 28 days. The route pages show every airline's record.

Want to check Korean Air's on-time departure rate on other routes?

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Domestic / International

On-time departureAvg delay
when late		n
International
93.2%+39minn=1819

Avg delay when late counts only flights that departed more than 15 minutes behind schedule

By aircraft type

On-time departureAvg delay
when late		n
Wide-body
B787
90.9%+46minn=307
A330
87%+33minn=269
B777
96.7%+24minn=92
B747
100%—n=83
A350
95.5%+26minn=44
A380
83.3%+121minn=6
Narrow-body
A320
94.8%+27minn=563
B737
95%+50minn=321
Other
BCS3
93%+53minn=128
GA8C—Collecting data—n=2
GLEX—Collecting data—n=2

Avg delay when late counts only flights that departed more than 15 minutes behind schedule / Faded rows are indicative (n<10); below n=5 no rate is shown / Variants of the same type (B788, B789, B78X and so on) are grouped into one row.

By departure time

On-time departureAvg delay
when late		n
0:00-3:00
94.4%+226minn=54
6:00-9:00
100%—n=30
9:00-12:00
91.5%+36minn=435
12:00-15:00
90.8%+34minn=445
15:00-18:00
94.4%+43minn=285
18:00-21:00
95.4%+26minn=539
21:00-24:00
96.8%+18minn=31

Avg delay when late counts only flights that departed more than 15 minutes behind schedule

By day of week Last 24 months

Mon
Dep
90.6%n=629
Arr
84.9%n=629
Tue
Dep
91.7%n=639
Arr
88.7%n=639
Wed
Dep
89.7%n=696
Arr
88.1%n=696
Thu
Dep
90.3%n=724
Arr
87.7%n=723
Fri
Dep
89.9%n=759
Arr
87.7%n=759
Sat
Dep
93.2%n=735
Arr
91.8%n=735
Sun
Dep
93%n=656
Arr
91.8%n=656

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Updated: / Last 28 days

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