Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Vietnam to Reykjavik Keflavik Intl Airport as you normally would.
The cheapest flight price from Vietnam to Reykjavik Keflavik Intl Airport is 11,151,579 ₫. On average you can expect to pay 11,151,579 ₫. The most popular route, (Ho Chi Minh City - Reykjavik Keflavik Intl), can usually be booked for 25,082,508 ₫.