Changes to the date, time, or itinerary are subject to the fare type chosen. Your options are listed below: 

• Full-Flex: Tickets can be changed before departure without fees, but any price difference will need to be paid.
• Semi-Flex: 
  •  Until 7 days before departure: no exchange fee, only any difference in fare will be charged. 
  • From 6 days up to 45 minutes before departure: a fixed cost per adult per leg and only any difference in fare will be charged. ​​​​​​​
    • €30 from/to Brussels/Lille/Paris - London 
    • €40 from/to Amsterdam/Rotterdam - London