Booked your ticket with KLM Airlines and now want to upgrade your seat for added comfort but thinking about how to upgrade your seat on KLM. To upgrade your seat from lower cabin class to higher cabin class, follow the steps given below:

1. Visit the official website of KLM.

2. Login to your booking account through PNR and last name.

3. Select your booked flight and click on the upgrade my flight option.

4. Here you will get the option to make an upgrade. You simply have to select your seat and make the payment.

To upgrade your seat on KLM, visit the official KLM website and log in to your booking account using your PNR and last name. Once you're in, select your booked flight and look for the "Upgrade my flight" option. Choose your desired upgraded seat from the available options and proceed with the payment to confirm your upgrade. This will allow you to move from a lower cabin class to a higher one, ensuring a more comfortable flying experience.