I'm interested in the routing taken by aircraft flying to Seoul(RKSI now, I believe, formerly RKSS) from North America. I'm quite sure they no longer take the long route across Japan to JEC then northwest to Seoul. There must be a shorter route across the Sea of Japan. Anyone know?

hope this help....FLT PLAN: KLAX/RKSI MACH:M86 A/C: B744 FUEL TIME CORR TOGWT LDGWT AVG W/CDEST RKSI 290595 11.30 ------ 872000 581572 P001RESV 016096 00.45 ------ALTN 012200 00.33 ------ ALTN RKPK DIST 0184 W/C P011HOLD 008982 00.30 ------REQD 327873 13.18 ------ BOW 410000 PAYLOAD 125000EXTRA 009294 00.26 ------TAXI 000167TTL AT BO 337167 13.54 ------ DIST 5632KLAX EHF J5 SUMMA J54 TOU J523 YZT J502 ANN J195 BKA J605 MDO DCT HOM DCT BET DCT NEONN G349 MARCC G583 UB G73 LOKIS B233 DE B467 KAE G597 KARBU KARBU1A RKSIKLAX/0310/BKA/0320/MDO/0350/BESAT/0348/KANSU/0350SUMMARY 11.04 FL 28 B/O 310433 PL 125000 TOW 872000 CRZ M86SUMMARY 11.01 FL 26 B/O 316000 PL 125000 TOW 872000 CRZ M86 -KLAX2100-N0507F310 DCT EHF J5 SUMMA J54 TOU J523 YZT J502 ANN J195 BKA/N0501F320 J605 MDO/N0501F350 DCT HOM DCT BET DCT NEONN G349 MARCC G583 BESAT/K0914S1060 G583 UB G73 LOKIS B233 DE B467 KANSU/N0508F350 B467 KAE G597 KARBU KARBU1A-RKSI1130 RKPK -EET/KZOA0022 KZSE0056 CZVR0155 PAZA0246 UHPT0552 UHPP0649 UHSH0807 UHSS0840 UHHH0906 UHWW0936 ZKKP1015 RKRR1045

I don't know if this is exactly what you wanted but here are real commercial flight plans as actually filed by airlines out of LAX. if your not fimiliar with the format, one dot(.) means the waypoint is part of the airway, two dots(..) means a direct routing. When available the enroute flying time is given. The last code is the airline and flight number.RKSI INCHEON INTLLocation: SEOUL/INCHEON, KORKLAX.GMN2.EHF.J65.RBL.J1.OED.J501.HQM.J501.TOU..UDMAP..JOWEN..LOHNE..ARCAL..6000N/16000W..NOLTI..NAYLD..NULUK..NANDY..NATES..NIKLL..NYMPH..NUZAN..NIPPI.R220.NOGAL.R220.NANNO.R220.NODAN.R217.GTC..KMC.V30.JEC.G585.BULL.BULL1S.RKSI KAL16KLAX.VTU2.RZS..LIBBO..BRINY..ALCOA..DONNG..HUMOR..4000N/14000W..4200N/15000W..4200N/16000W..4100N/17000W..4000N/18000E..4000N/17000E..4000N/16000E..ETRON.OTR7.PABBA.OTR4.GOC..KMC..JEC.G585.BULL.BULL1S.RKSI KAL18LAX.VTU2.RZS..LIBBO..BRINY..ALCOA..DONNG..HUMOR..4000N/14000W..4100N/15000W..4300N/16000W..4600N/17000W..4500N/18000E..4300N/17000E..4100N/16000E..ETRON.OTR7.PABBA.OTR4.GOC..KMC.V30.JEC.G585.BULL..RKSI KAL018KLAX.VTU2.RZS..LIBBO..BRINY..ALCOA..MCFLY..ZEFER..4400N/14000W..4700N/15000W..4800N/16000W..4700N/17000W..4500N/18000E..4100N/17000E..3800N/16000E..VEPOX.OTR13.VACKY.OTR14.PETAL..OJC..KCC.V26.JEC.G585.BULL.BULL1A.RKSI AAR201LAX.VTU2.RZS..LIBBO..BRINY..BOARS..AMAKR..GUTTS..KLARK..BEGUN..46N/14W..48N/15W..51N/16W..53N/17W..CHIKI..WALLT..AAMYY..ASPIN..AKISU..AGEDI..ADGOR.R591.ADNIP.OTR5.PABBA.OTR4.TOPOS.OTR4.GOC..KCC.V26.JEC.G585.BULLS.BULL1A.RKSI AAR201LAX.VTU2.RZS..LIBBO..BRINY.ALCOA..DONNG..HUMOR..42N/14W..45N/15W..46N/16W..45N/17W..43N/18E..40N/17E..38N/16E..GARRY.OTR11.SCORE.OTR12.VIRGO..OJC..XAC.G597.JEC.G585.BULLS.BULL1A.RKSI 10:03 AAR201KLAX.VTU2.RZS.J88.SNS.J110.OAK..ENI.C1486.GUTTS.C1486.GENCO..GAVEL..4400N/14000W..4500N/15000W..4500N/16000W..4500N/17000W..4300N/18000E..4000N/17000E..3800N/16000E..GARRY.OTR11.ABETS..KAGIS.OTR11.CVC..DF.Y20.AKANE.Y18.YME.V38.JEC.G585.BULLS.BULL1A.RKSI GCO285KLAX.VTU2.RZS..LIBBO..BRINY..BOARS..AMAKR..GUTTS..GENCO..GAVEL..4500N/14000W..4700N/15000W..4700N/16000W..4600N/17000W..4400N/18000E..4300N/17000E..4200N/16000E..CALMA.OTR5.PABBA.OTR4.TOPOS.OTR4.GOC..KCC.V26.JEC.G585.BULLS.BULL1A.RKSI/1213 AAR281KLAX.VTU2.RZS..LIBBO..BRINY..BOARS..AMAKR..GUTTS..ZEFER..4400N/14000W..4700N/15000W..4900N/16000W..5100N/17000W..ADK..CHIKI..WALLT..AAMYY..ASPIN..AKISU..AGEDI..ADGOR.R591.ADNIP.OTR5.PABBA.OTR4.TOPOS.OTR4.GOC..KCC.V26.JEC.G585.BULLS.BULL1A.RKSI/1201 AAR201KLAX.VTU2.RZS..LIBBO..BRINY..ALCOA..DONNG..HUMOR..4100N/14000W..4300N/15000W..4400N/16000W..4400N/17000W..4400N/18000E..4100N/17000E..3900N/16000E..GARRY.OTR11.DRIVR.OTR11.SCORE.OTR12.PETAL..OJC..XAC.G597.JEC.G585.BULLS.BULL1A.RKSI/1227 AAR201KLAX.VTU2.RZS..LIBBO..BRINY..ALCOA..DONNG..HUMOR..4100N/14000W..4100N/15000W..4000N/16000W..3800N/17000W..3700N/18000E..3600N/17000E..3500N/16000E..HABIT.OTR13.VEPOX.OTR13.VACKY.OTR14.ACQUA.OTR14.PETAL..OJC..KCC.V26.JEC.G585.SEL..RKSI/1239 AAR201

Thank you very much! Just what I asked for! Skyskipper (CYXE)