Do airlines check return tickets when flying to Da Nang, Vietnam?

On a Vietnam Airlines flight from Thailand to Vietnam, no onward ticket out of Vietnam was requested; the travelers only had a ticket from Thailand to a third country about a month later.

Do not rely on a bus ticket as sufficient proof of onward travel: at boarding, an airline may not accept it instead of a flight out of Vietnam or to a third country.

On a flight to Da Nang via Bangkok, a passenger without an onward ticket was allowed to board after showing a printout of a three-month visa and explaining that they planned a visa run when it expired.

A traveler flying Emirates with a Thailand transit was asked for a return ticket at check-in two days ago; they bought one on trip.com on the spot and were then issued boarding passes without further issue.

If the final leg is Bangkok–Da Nang on Vietnam Airlines check-in, a return ticket from Vietnam will almost certainly be required. Airlines may also ask to see the full chain of onward tickets when checking in for earlier segments of a multi-leg trip.

One traveler notes that return tickets may now be checked right at the check-in counter across Southeast Asia, and recommends booking a return ticket reservation via backtickets.com before every flight — cheaper than the risk of being denied boarding.

A traveler with roughly 40 flights around SEA over 2 years reports that on Da Nang to Kuala Lumpur departures, a return ticket was requested twice this year, whereas last year it wasn't asked at all — checks on this route have become stricter.

A traveler flew from Singapore to Da Nang twice — return tickets were never checked at check-in.

During a Bangkok transit, besides the return ticket, travel insurance was also requested — an additional requirement to be aware of.

On a June 19 departure from Bangkok, check-in was refused without a return ticket from Vietnam or a valid visa — tickets had to be purchased on the spot at the airport.

A family of four flew HK Express from Hong Kong to Da Nang on June 25 — no one asked for return tickets at check-in.

Travelers with a Vietnamese e-visa are less likely to be asked for a return ticket, but it's not guaranteed. Experiences from Kuala Lumpur departures vary.

Vietnam does not require hotel bookings or tickets at the border. However, airlines may ask for a return or onward ticket at check-in — this is most commonly reported at Bangkok departures.

Flying HK Express from Hong Kong to Da Nang without a return ticket carries a risk of being denied boarding. If planning to continue overland (e.g. to Nha Trang), having a bus or train booking as proof of onward travel is advisable.