The service enables you to bid for an upgrade to Economy Comfort or Saga Class. Just offer the amount you are willing to add to what you have already paid for the ticket and see if it is good enough for us to accept.
How do I bid for a Class Up?
You receive an email 10 days before you start your trip with a link to the CLASS UP bidding site.
For further information on the Class Up product, read the full Class Up Terms & Conditions.