Make the fact that checked baggage is not include
Cons: When I booked my flight it was not at all clear that I had to pay for checked luggage, therefore I had to pay extra when I arrived at the airport. Please make it clear from the very beginning that checked luggage is not included. Easy Jet does a great job of this, giving you the option to pay for a checked bag when buying your ticket. With Air Europa, I had no idea at all.