We will arrive to Hanoi Airport, and we will leave Vietnam within 1 month to Kambodia, but we don't know the date and border crossing of departure. Can we use e-visa?
Dear Endre Hajdu,
You can check the border with bus office where you book the ticket
And you must to know the entry date will you arrive.
Check Evisa here https://www.vietnam-evisa.org/vietnam-e-visa.html
Ashley Nguyen (Ms)