An update and eye opener. The tax calculation changed even though I used saved itineraries. Both decreased during the last week, though on QF it was only about 5,000 KRW. AA decreased by over 50%.


Immigration and Naturalization Service Fee 22,000.00 KRW
Finland - Passenger Fee - International 20,400.00 KRW
Passenger Facility Charges 7,100.00 KRW
Passenger Service Charge (International) for
South Korea 28,000.00 KRW
International Departure Tax for Chile 47,000.00 KRW
UK Passenger Service Charge 46,500.00 KRW
U.S Animal and Plant Inspection Service Users Fee 15,800.00 KRW
U.S Customs Fee 17,200.00 KRW
September 11th Security Fee 8,000.00 KRW
Finland - Security Charge - Domestic International 9,000.00 KRW

total taxes/surcharges = 221,000.00 KRW
----------------------------

Adult traveller(s)
Immigration and Naturalization Service Fee 22,000.00 KRW
Finland - Passenger Fee - International 20,400.00 KRW
Passenger Facility Charges 7,100.00 KRW
Passenger Service Facilities Charge - Japan 32,400.00 KRW
Passenger Service Charge (International) for
South Korea 28,000.00 KRW
International Departure Tax for Chile 47,000.00 KRW
UK Passenger Service Charge 46,500.00 KRW
Airline Insurance Surcharge 5,100.00 KRW
U.S Animal and Plant Inspection Service Users Fee 15,800.00 KRW
U.S Customs Fee 17,200.00 KRW
September 11th Security Fee 8,000.00 KRW
Finland - Security Charge - Domestic International 9,000.00 KRW

total taxes/surcharges = 258,500.00 KRW


Aside from the 2 bolded items which QF charges (probably due to the NRT stopover), the taxes are the same. It may be just a function of the fact that LA and AY had 3 long haul flights, while there were only 2 AA long-haul flights.