How to book a seat for an infant on Southwest

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Things that must be learned for Southwest Baby/ Infant reservation

Southwest Airlines has special and different rules and regulations for the child or infant you will travel with. So, this article will readily inform you about the possible or quiet information about the child traveling or booking with Southwest Airlines, and you must pursue it thoroughly. 

Can you book a seat for an infant on Southwest?

Yes, you can book a seat for an infant on Southwest Airlines. To do this, you will need to enter the infant's age when booking your reservation. Infants who travel in a separate seat must pay the same fare as an adult.

How do I book a seat for a child on Southwest?

Here are the steps to book a seat for an infant on Southwest:

  1. Go to the Southwest Airlines website and enter your travel information.
  2. Under the "Passengers" section, select the number of adults and infants traveling.
  3. Click the "Continue" button.
  4. Enter the infant's name, date of birth, and gender.
  5. Select a seat for the infant.
  6. Review your reservation and click the "Continue" button.
  7. Pay for your reservation.
  8. Once you have booked your reservation, you must bring a government-issued ID for the infant to the airport. It could be a birth certificate or passport.

How much is a child seat on Southwest?

A child seat on Southwest is free to check. You can check it at the curb, ticket counter, or gate.

What documents do I need for my child to fly Southwest?

The documents you need for your child to fly Southwest will depend on a few factors, including the child's age, whether they are traveling with a parent or guardian, and the flight's destination. So, there are few important points that you need to get through it.

Domestic Flights

  • Children under two can travel as lap children on Southwest Airlines domestic flights for free. However, you must provide proof of age for your child, such as a birth certificate or passport.
  • Children over the age of 2, or children of any age traveling with their seats, will need a boarding pass. You can add a child to your reservation online or at the airport. You will need to provide proof of age for your child and their name and date of birth.

International Flights

Children of all ages: Regardless of age, all children must have a passport to travel internationally on Southwest Airlines. You must also provide proof of age for your child, such as a birth certificate.

Unaccompanied Minors

Children ages 5-11 traveling without an accompanying adult must be booked as unaccompanied minors. This service is available for a fee. You will need to provide proof of age for your child and the name and contact information of the person who is dropping off and picking up the child at the airport.

Additional Information

  • Southwest Airlines does not require children to show identification when traveling within the United States. However, having some form of identification with you for your child is a good idea if needed.
  • If you are traveling with a child who has a different last name than you, you may be asked to provide documentation to prove that you are the child's parent or guardian. It could include a birth certificate, adoption papers, or a court order.

How do I book a reservation with a Lap Child on Southwest?

Southwest Airlines is the world’s largest low-cost carrier and a major airline based in the United States. It operates flights to over 100 destinations in 42 states and is known for the services it offers to its passengers. If you are planning to travel with Southwest and you want to travel with an infant, you can do that easily on Southwest and make your travel journey and the process seamless. 

If your child is over 14 days old and under two years of age and not occupying a seat, they must be considered as a lap child. Every adult passenger can travel with one lap child. Before that, you need to book a reservation with a lap child, which can be done by calling the airline at 1-800-I-FLY-SWA or online. 

  • Visit the online website of Southwest Airlines. 
  • On the home page, book tickets and enter details such as destination, travel date, etc. 
  • In the ‘Passengers’ field, select the total number of passengers and lap children. 
  • Enter search and select a flight according to your preference. 
  • On the payment gateway, enter passengers’ details and names along with lap child details and confirm by paying for a flight. 

What special rules apply to infants and toddlers on Southwest? 

Some of the rules that may apply to infants or toddlers traveling on Southwest Airlines are as follows. 

  • A child must be at least over 14 days and under two years of age to travel on a flight free of cost. 
  • Only one infant or lap child is allowed to travel with one adult each. 
  • No boarding pass is required with no ticket. However, if a passenger wishes to purchase a separate seat for their infant, they can use the child restraint system (CRS.)
  • There are facilities for passengers to nurse their children on board. You may ask the crew members to assist you. 


The boarding pass is not required for an infant on Southwest flights if a child is over 14 days and under two years of age and is traveling on a lap. However, a Boarding Verification Document (BVD) is required for your infant to board the flight. In case your child is traveling with a ticket in the child restraint system (CRS), they need a boarding pass. 

Certain documents are required to be shown at the airport for an infant to travel as a lap child for free on Southwest. The government-issued identification original or photocopies can include a passport, birth certificate, etc. Please note that electronic screenshots, photo images, or immunization records are not acceptable. If a passenger fails to show the required documents for their lap child, they are entitled to buy a ticket for them. 

Passengers traveling with infants need to show age proof such as a passport, birth certificate, or government-issued ID card for their child traveling on their lap, free of cost. If a passenger is unable to show age proof, they are entitled to buy a ticket for their child to travel on Southwest.  

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