Yes, you can upgrade to business class on Smartwings Airline. With Smartwings Business Class you can enjoy spacious seating, gourmet dining, and personalized service. Smartwing Upgrade requests can be processed only for qualified booking tickets and requests submitted two hours before the flight's scheduled departure . or You can check Smartwings' official website and call them to up-to-date information on upgrade availability and Smartwings upgrade fees.