BLOG ON HERE:I'm with Aer Lingus on this one. It was clearly an error.

The NCA would be better advised to address more important issues than attempting to defend the indefensible. - John

I'm not well up on contract law in this circumstance but I really don't see how Aer Lingus can reasonably be expected to honour such blatantly incorrect ticket prices, other than as a PR goodwill gesture. Fairness doesn't come into it overmuch, given that anyone who booked these flights probably came across them fortuitously. Cancelling the bookings won't disadvantage anybody in any real sense. - Tom Ennis

Aer Lingus is plain wrong. It has entered into a valid contract with its customers to provide seats at €5. Any backtracking is a breach of contract. The airline cannot argue it made a mistake as the following statement is emblazoned on its website during the booking procedure: "Availability or price is not guaranteed until you receive a booking confirmation." Passengers, if you had a booking confirmation then your booking should be legally enforceable. The offer has been made for a seat at €5, you have accepted it at an agreed price of €5 and have paid €5. It's that simple. If the website had corrected itself during booking and refused the €5 then Aer Lingus might have a case but not after issuing a booking confirmation. - Paul

Given the fact that they have in the past (and will again) offer bargain-basement flight prices, trying to suggest people knew this was a screw-up is a weak argument. All they have to do is say "it was a screw-up, sorry, look have a voucher for 100 quid or book a flight and we'll upgrade you. We don't have to honour this but we want to make amends still. Giving those flights away for that amount would impact on our bottom line, which would mean we couldn't offer as cheap flights to everyone else on the flight." - Damien Mulley