Korean Air says to buy Boeing planes worth $3.77 billion SEOUL (Reuters) - Korean Air Lines Co Ltd (003490.KS) said on Thursday it would buy 3.98 trillion won ($3.77 billion) worth of aircraft from Boeing Co (BA.N). The South Korean flag carrier said in a regulatory filing that the purchase would include five Boeing 747-8i planes, six 777-300ER planes and one 787 Dreamliner. The 12 aircraft will be purchased by end-2018. $1 = 1055.9500 Korean won Reporting by Joyce Lee; Editing by Miral Fahmy