Have in mind that the lowest fares don’t relate to these kinds of tickets and in fact are more expensive. In most cases, when you choose the flight you want, the next step will be the fare family packages. This is where you get information on how much the surcharge costs, as well as what this higher tariff allows you to do.
In the fare family offer, after selecting the flight you want, you will see the names of the fares and how much the extra charge is. The list covers the services that are included in the price.
If there is a € (euro) sign next to button Change, it means that you can change your airline tickets for a fee. On the other hand, if there is a green sign (ok) you can change the travel date for free. If there is a red X that means that you cannot change the card in any way, and this is not the solution for you in this case.