How do I upgrade my seat? Seating requests and upgrades are not handled by DeNA TRAVEL and the flight operator should be contacted directly. Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles How do I get a boarding pass? What do I need to check in for my flight? How much baggage is included in my reservation? About Airline Baggage Allowances What documents do I need to pass the airport security?