I am enrolled in a mileage plan. Can I get mileage with DeNA TRAVEL? Mileage is handled by airlines and the airline should be contacted directly with airline confirmation number which can be found on the copy of the e-ticket. Was this article helpful? Can't find what you're looking for? Inquiry Form Related articles Can I use frequent flyer miles for trips booked on DeNA TRAVEL? What should i do if I made a change/refund with the airline directly? How much baggage is included in my reservation? I have made a mistake in passenger's passport information. Can I add on baggage afterwards?