Can I get my visa stamped if I fly to another airport in Vietnam?
There will be no problem if you switch your destination among 3 international airports in Vietnam: Noi Bai International Airport (Hanoi), Da Nang airport (Da Nang), Tan Son Nhat International airport (Ho Chi Minh city). Visa on arrival works well for 3 above airports so you completely can get your visa stamped there.