Do I need proof of onward travel to board a flight to Vietnam if I already have a valid visa?

Before a flight to Vietnam, airlines commonly verify travel documents through Timatic. If a passenger does not meet visa-free entry rules or cannot demonstrate eligibility to enter, check-in staff may request a return or onward ticket.

A valid Vietnam visa matters during document checks because it establishes a basis for entry, so an onward-ticket request should not be justified solely by the absence of a visa. However, airlines may still ask visa holders for proof of departure, including in cases reported at Bangkok airport.

If you have not bought a return flight, an active reservation for onward travel may be useful at check-in and can be accepted instead. The discussion suggests arranging the reservation about two days before departure so it remains valid during document checks.

Medical insurance is not currently listed as a mandatory entry document for Vietnam. Final admission remains subject to border control, while the airline may assess the risk of denied entry at check-in.