Currently there are no direct flights Copenhagen to Vietnam.

Flights from Copenhagen to Vietnam with one stopover.

Flights via Manchester (MAN), United Kingdom
From Copenhagen (CPH), Denmark with British Airways
OR
From Copenhagen (CPH), Denmark with British Midland
OR
From Copenhagen (CPH), Denmark with SN Brussels Airlines
Transfer at Manchester (MAN), United Kingdom Then on to Noibai Airport (HAN), Hanoi, Vietnam with British Airways
Flights via San Francisco (SFO), San Francisco CA, United States
From Copenhagen (CPH), Denmark with Icelandair Transfer atSan Francisco (SFO), San Francisco CA, United States Then on to Noibai Airport (HAN), Hanoi, Vietnam with EVA Airways
OR
Then on to Ho Chi Minh City Airport (SGN), Vietnam with EVA Airways
Flights via Moskva Sheremetyevo (SVO), Russia
From Copenhagen (CPH), Denmark with Aeroflot Transfer at Moskva Sheremetyevo (SVO), Russia Then on to Hanoi (HAN), Vietnam with Aeroflot
Flights via Doha (DOH), Qatar
From Copenhagen (CPH), Denmark with Qatar Airways Transfer at Doha (DOH), Qatar Then on to Hanoi (HAN), Vietnam with Qatar Airways
OR
Then on to Ho Chi Minh City (SGN), Vietnam with Qatar Airways
Flights via Paris Charles de Gaulle (CDG), France
From Copenhagen (CPH), Denmark with Air France Transfer at Paris Charles de Gaulle (CDG), France Then on to Hanoi (HAN), Vietnam with Air France
Flights via Bangkok Suvarnabhumi (BKK) Thailand
From Copenhagen (CPH), Denmark with Thai Airways Transfer at Bangkok Suvarnabhumi (BKK) Thailand Then on to Hanoi (HAN), Vietnam with Thai Airways
OR
Then on to Ho Chi Minh City (SGN), Vietnam with Thai Airways
Flights via Frankfurt am Main (FRA), Germany
From Copenhagen (CPH), Denmark with Lufthansa Transfer at Frankfurt am Main (FRA), Germany Then on to Ho Chi Minh City (SGN), Vietnam with Lufthansa
Flights via Singapore Changi (SIN), Singapore
From Copenhagen (CPH), Denmark with Singapore Airlines Transfer at Singapore Changi (SIN), Singapore Then on to Ho Hanoi (HAN), Vietnam with Singapore Airlines