Originally Posted by JUANMA
Anybody has a rough idea of how much it would be to buy a one-way ticket from LHR to DUB at the airport? I know it might depend on how full the flight is and I guess no option of the cheapest fares I might get on their website, but if anybody has an idea, I´d appreciate it.
Book the cheapest *OWBMI fare available for when you THINK you'll be travelling. All of these fares (even the cheapest £24+tax W fares) are changeable for the payment of a £30 fee plus difference in fare if you need to book into a more expensive class, all of which you can do at the ticket counter at the airport.
Your maximum potential downside with this method is £30 over the cost of the walkup fare. The potential upside is about £230.