We’re sorry, your promotion code is not valid for one of the following reasons:
■ It does not exist.
■ It has expired.
■ You have selected dates that are not allowed for this code.
■ You have selected a route that is not allowed for this code.
Please review the requirements for your code and try again.
I've entered the code, and it showed me dates where it worked (clearly states that it only applies to Tuesday and Wednesday travel).