Horrible low-cost airline, which in the end is not so low-cost since they charge 45€ for 3 extra kg of baggage :)
“Available” desks for check in: 9. Actual available desks for check in: 3. On a high season when the airport is even fuller with people. Moreover, there were two separate lines. One for just dropping off your suitcase in case it was not overweight and another line in case your suitcase was overweight or was not included in your ticket and you had to pay extra. NO ONE told you that and there were no signs. I waited for 40 minutes to drop my suitcase and when they saw it was 3 kg more they told me I had to WAIT again but on a different line. Zero organization. Moreover, the plane was not so clean, seats and space in general not so comfortable.

The airline through the webpage promotes or suggests paying for a seat. I paid more than 100 dollars to save a special seat. On 2 of my 4 flights, I lost my money they did not respect the payment. The worst part is that they don't care. It is not important for them.
I would recommend using air France rather than Iberia.

I bought this ticket from AA operate with Iberia..The flight from Madrid to TLV was disaster . The Liberia force us to pay for food and snacks which already was on my ticket as a service. But they nightmare was the flight back to JFK . They cancel my original flight and lot us in Madrid. For more than 7 hours without any food or places to sleep. Do tour self Faber and avoid this airline

The worst customer service ever. I have traveled in many places with many airlines but these guys win the trophy for worst airline.

Customer service is non existent. They keep hanging up as is the line drops when you ask for a manager. They change seats even when you pay for them. They are vulgar at the checking counters in Boston.

We had paid in advance for our two seats in advance to be better ones, and on checking in in Madrid, we were told that as the plane had changed, we could no longer have those seats, and that the new ones were standard, and not better seats. We asked if they could be changed and were told this was not possible and that we should claim the cost of the seats reservations from Iberia. We have submitted claims but not yet heard from Iberia. Furthermore the flight was due to leave at 1.15pm but we kept on being told it was delayed, but not given a reason nor a likely new flight time. A new time was posted about two or three times but when one of us asked if this was the new flight time we were told that it was a time when a new update would be given. In the end boarding started at 17.00 and the flight took off at about 17.30pm, ie more than 4 hours late. When we claimed compensation for the delay we were refused compensation, and told that the delay was due to 'external circumstances'. We could see the plane on the runway and it was clear that the plane was being examined at various points by technicians, which strongly suggests that the delay was Iberia's fault. There was no mention of air traffic control issues nor weather problems.