I guess it's similar to what SWISS did a little while back with European fares. Still amazes me that you can buy a Y fare and not have a bag.
Code:
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AL FLGT BK DATE TIME FARE BASIS NVB NVA BG
ZRH
LON LX 316 Y 10JAN 0710 YLGTOW 10JAN10JAN 0P
CHF 605.00 10JAN18ZRH LX LON625.58YLGTOW NUC625.58END
ROE0.967100
CHF 40.00YQ
CHF 16.00YR
CHF 35.00CH
CHF 696.00