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Expansion of Applicable Flights for Married Segment Control

Dear Travel Agency Partner


Japan Airlines introduced a "Married Segment Control" (MSC) concept when booking JAL Operated flights from November of 2017.

This is to advise you that the scope of Married Segment Control will expand to include JAL marketed flights operated by American Airlines and Finnair as per below.

We thank you in advance for your kind cooperation.


  • Effective Date:
    Booking from 1st April, 2019

  • Target Flights:
    - JAL codeshare flights with American Airlines
    - JAL codeshare flights with Finnair
  • ∗Until 31 March, 2019 only JAL operated flights were applicable. Further expansion may be possible in the future.

  • Changes to Married Segment Control:
    When re-booking flights that show a Married Segment Indicator, it is necessary to rebook the entire O&D.

    Kindly refer to the following example.

    (Example)
  • Cancellation of a partial section
    In case there are multiple flight sectors involved between the passengers' origin and destination, the multiple segments will be connected as married segments, and a Married Indicator will be displayed in the PNR.

    Ex.) LAS=LAX (JLxxxx/AAxxxx) LAX=KIX(JL069)


    (Until 31MAR19)

    ①Booking with each flight unit②Cancel with each flight unit
    1.LASLAX Y JLXXXX HK10


    2.LAXKIX Y JL069 HK10


    ITIN was originally booked as a LAS-LAX-KIX O&D.

    Later, it is requested to cancel only the LASLAX
    1.LASLAX Y JLxxxx HX


    2.LAXKIX Y JL069 HK10

    LAS-LAX segment is cancelled and LAX=KIX HK10 will be kept

    (After 01APR19)
    ①Booking with O&D concept②Cancel with O&D concept
    1.LASLAX Y JLXXXX HK10


    2.LAXKIX Y JL069 HK10


    ITIN was originally booked as a LAS-LAX-KIX O&D.

    Later, it is requested to cancel only the LASLAX portion.
    1.LASLAX Y JLxxxx HX


    2.LAXKIX Y JL069 HX

    As the two flight segments are under MSC as a LAS-KIX O&D, it is not possible to only cancel LAS-LAX segment. Instead, both flight segments must be cancelled and LAXKIX must be rebooked

    Thank you for your support of Japan airlines.

    Published on 22MAR19

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