Safety OPERATION DATA

Apr. 2017 
(01~30.Apr)(Apr. 1-30 2017)

calender
Apr.2017

2018

2017

2016

2015

2014

Number of flights

All international 
and domestic flights

29,343

Domestic 
Flights

25,069

International 
Flights

4,274

Actual operation rate

All international 
and domestic flights

99.0%

Domestic
flights

98.8%

Flights canceled

298

Due to weather

175

Due to equipment failure

19

Due to equipment operation

88

Other

16

International
flights

99.9%

Flights canceled

3

Due to weather

0

Due to equipment failure

2

Due to equipment operation

0

Other

1

On-time departure rate

All international 
and domestic flights

91.2%

Domestic
flights

91.8%

Departure flights delayed

2,045

Due to weather

33

Due to equipment failure

84

Due to equipment operation

1,509

Other

419

International
flights

87.5%

Departure flights delayed

533

Due to weather

13

Due to equipment failure

26

Due to equipment operation

104

Other

390

On-time arrival rate

All international 
and domestic flights

85.4%

Domestic
flights

86.5%

Arrival flights delayed

3,396

International
flights

79.5%

Arrival flights delayed

876

Flights diverted

Domestic flights

Flights diverted

13

Due to weather

7

Due to equipment failure

0

Other

6

International Flights

Flights diverted

3

Due to weather

0

Due to equipment failure

1

Other

2

Returned to airport of departure

Domestic flights

Flights returned to departure airport

39

Due to weather

37

Due to equipment failure

2

Other

0

International Flights

Flights returned to departure airport

1

Due to weather

0

Due to equipment failure

1

Other

0