Safety OPERATION DATA

Dec. 2017 
(01~31.Dec)(Dec. 1-31 2017)

calender
Dec.2017

2018

2017

2016

2015

2014

Number of flights

All international 
and domestic flights

30,543

Domestic 
Flights

25,974

International 
Flights

4,569

Actual operation rate

All international 
and domestic flights

98.9%

Domestic
flights

98.7%

Flights canceled

331

Due to weather

210

Due to equipment failure

22

Due to equipment operation

86

Other

13

International
flights

99.9%

Flights canceled

1

Due to weather

0

Due to equipment failure

1

Due to equipment operation

0

Other

0

On-time departure rate

All international 
and domestic flights

87.6%

Domestic
flights

87.3%

Departure flights delayed

3,300

Due to weather

111

Due to equipment failure

86

Due to equipment operation

2,482

Other

621

International
flights

89.6%

Departure flights delayed

477

Due to weather

16

Due to equipment failure

34

Due to equipment operation

110

Other

317

On-time arrival rate

All international 
and domestic flights

83.7%

Domestic
flights

83.1%

Arrival flights delayed

4,380

International
flights

87.0%

Arrival flights delayed

593

Flights diverted

Domestic flights

Flights diverted

9

Due to weather

6

Due to equipment failure

0

Other

3

International Flights

Flights diverted

2

Due to weather

1

Due to equipment failure

0

Other

1

Returned to airport of departure

Domestic flights

Flights returned to departure airport

29

Due to weather

25

Due to equipment failure

3

Other

1

International Flights

Flights returned to departure airport

0

Due to weather

0

Due to equipment failure

0

Other

0