Airfares are affected by many factors such as flight route, airline, flight time and ticket type you choose. When booking a ticket, you should pay attention to additional fees and taxes.

The formula for calculating ticket prices includes:

Ticket price = Basic ticket price (net price or fare) + VAT + Fees (security fee, airline management fee, ticket issuance fee).

The ticket price you see when searching for a flight is the price excluding tax (net price). Usually, the ticket price includes 7kg of carry-on baggage. However, checked baggage is usually not included in super-saver or promotional tickets of airlines.

You can change your flight date, flight time or itinerary, but you must comply with the regulations of the ticket type you purchased. When you do this, there will usually be a service fee and a fare difference that you need to pay:

• For VietJet Air, Skyboss tickets are free to change. Other types of tickets will have a change fee.
• For Jetstar, if you choose a FlexiPack or Optimal Package ticket, you will not have to pay a change fee. Other types of tickets will have a fee.
• For Vietnam Airlines, Flexible Business and Flexible Economy tickets are both free to change, while other classes will have a fee.
• For Bamboo Airways, Business tickets are also free to change. Other types of tickets will have an additional fee.

The fastest way is to contact the agent where you purchased the ticket for support on changing information and paying additional fees if any.

Domestic itineraries:

• For passengers aged 14 and over: Must present Citizen Identification Card, National Identity Card, Passport, Driver's License...
• For passengers under 14 years old: Must have original Birth Certificate or a copy.
• Infants under 1 month old must have a valid Birth Certificate with confirmation stamp.

International itineraries:

• Passport.
• Travel document.
• Visa (depending on the requirements of the destination country).

>> See more: Latest regulations on identification documents when traveling by plane

Carry-on baggage standards:

• Vietnam Airlines:
  • Economy class: 10kg (1 carry-on item + 1 accessory)
  • Business class: 18kg (2 carry-on items + 1 accessory)
• Vietjet Air: 7kg total carry-on baggage.
• Bamboo Airways:
  • Economy class: 7kg
  • Business class: 14kg

Passengers can carry personal items such as clothes, shoes, jewelry. Liquids, gels, creams must comply with capacity regulations. Phones, laptops, cameras and other electronic devices are also allowed in carry-on baggage. Books, magazines, children's toys and snacks can also be carried. Personal items such as toothpaste, perfume are allowed but cutlery must be carefully checked.

>> See more: What can't be carried in your carry-on luggage?

Checked Baggage Standards:

• Vietnam Airlines:
  • Economy Class: 23kg/baggage
  • Business Class: 32kg/baggage
  • Total dimensions not exceeding 158cm..
• Vietjet Air:
  • Standard Checked Baggage Weight not exceeding 32kg/piece
  • Dimensions not exceeding: 119cm x 119cm x 81cm.
• Bamboo Airways:
  • Each checked baggage has a maximum weight of 32kg
  • Total dimensions not exceeding 203cm.

Make sure your baggage is securely packed before arriving at the airport. Comply with each airline's weight and size regulations to avoid additional fees. Clearly state your contact information on your baggage in case of loss. Consider purchasing insurance for your checked baggage to protect your personal belongings.

>> See more: What can be carried in checked baggage?

*The above regulations apply to Economy tickets.

According to the recommendations of airlines, flying in the first 36 weeks is safe if the woman's pregnancy does not appear abnormal. This means that pregnant women can fly until the 8th month of pregnancy without significant risks.

Airlines ensure that the cabin pressure is always at a safe level, not affecting the health of the mother and fetus. Furthermore, the mother's respiratory rate may increase during takeoff and landing, but will return to normal during the flight.

>> See more: Air travel regulations for pregnant women

Infants under 2 years old: Passengers need to prepare a birth certificate, birth certificate and birth certificate extract when traveling with an infant under 2 years old (valid for no more than 30 days from the date of issue)

Children from 2 to under 12 years old: Passengers need to have an original birth certificate or a copy of the extract. Personal passport or passport with parents/legal guardians.

Children over 12 years old: If the child is from 12 to 14 years old, the passenger needs to prepare a birth certificate. For children over 14 years old, the passenger needs to prepare a CCCD/ID card or passport.

>> See more: What should children and babies pay attention to when flying?

Usually, discounted or promotional flight tickets will not available for customers to make refunds or cancellations. This means that if you have purchased a flight ticket at a discounted price, you will not be able to exchange or get a refund when needed.

On the contrary, for other types of tickets, such as business class or regular tickets, the cancellation regulations will depend on each specific airline and the accompanying terms. Airlines often have separate policies for each type of ticket, so customers need to learn carefully before booking tickets to avoid unwanted troubles later.

>> See more: Can I cancel my booked flight?

You should check in at least 2 hours before a domestic flight and 3 hours before an international flight.

If you do not have any checked baggage, you can save time by using the online check-in service from 24 to 48 hours before your flight, depending on the airline.

>> See more: How long before should I go to the airport to check in for my flight?

If you have excess baggage of about 1 to 2 kg, a good tip is to transfer some items from checked baggage to carry-on baggage. However, if the amount of baggage exceeds the allowed allowance, the best option is to buy additional checked baggage at the counter of the airline you are flying with.

>> See more: What to do if your luggage is overweight?