If you have booked your flight tickets with Iberia Airlines and but forgot to choose your favourite seat then you can select your seat by paying some amount along with the booking fee. To select your seat on Iberia Airlines, you can visit the official website of Iberia Airlines and enter the ticket number and your last name. You will be able to obtain your reservation and seat selection option. Now, you can easily select your seat from the available seats and pay the applicable money.