FlyerTalk Forums - View Single Post - Price increase when more than 3 months between outbound & inbound (KLM)
Old Mar 11, 2014 | 5:18 am
  #3  
nux
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Fares can have a minimum stay and maximum stay requirement.

The lower fares you are looking at will have a 3 month maximum stay requirement, so when you increase the stay over 3 months that fare becomes invalid and a more expensive fare will apply.
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