Business class has its own benefits like comfortable and spacious seating, priority check-in and boarding, additional baggage allowance, delectable meals and so much more. If you have booked an economy class ticket in KLM airline and now want to upgrade it to business class then you can easily do it. The ways to upgrade economy to business class in klm airlines are: 1. Online 2. Call Passenger can also call the customer care or reservation center of the airline to upgrade their seat to business class. The executive will ask for the booking details and will inform you if an upgrade is possible. If the upgrade can be done then you can either redeem your miles to upgrade or purchase it with your credit card. If you will have sufficient miles they will be deducted from your account 3. Airport Passengers can also upgrade their seat to business class at the airport at the Check-in counter and at the self-service kiosk. Passengers can ask the representative if seats are available in business class. If seats will be there then you can upgrade and opt to pay through cash or credit card. On cash payment passengers can earn additional miles depending on the total amount paid in euros. If passengers face any problem while upgrading their seat or have any doubt regarding the upgrade policy then they can contact the customer care center of the airline. The representatives are highly knowledgeable and experienced people. They will provide all required information. Source: Free Articles from ArticlesFactory.com If passengers face any problem while upgrading their seat or have any doubt regarding the upgrade policy then they can contact the klm bookign number center of the airline.