A number of major airports, including Tan Son Nhat in Ho Chi Minh City, will undergo repairs between April and June, and the number of flights will be reduced as a result, the Civil Aviation Authority of Vietnam (CAAV) has announced.
They will fix their runways between April 10 and June 25.
According to the CAAV, Tan Son Nhat International Airport will see around 80 flights cut and 10,000 passengers unable to fly each day due to the maintenance.
Annually, the number of airline passengers who go on summer vacation increases by 20-30 percent between May and July.
This year Vietnamese will have a six-day holiday from April 28 to May 3 due to Hung Kings' Temple Festival to pay tribute to the mythical founders of the nation, Reunification Day on April 30 and Labor Day.
An estimated one million booked passengers will be unable to fly during the maintenance period.
It is expected to cause a loss of VND120 billion (US$5.57 million) for the airports and VND1.5 trillion ($69.6 million) for carriers.