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Spirit Airlines Infant Policy

  • Writer: Thomas grey
    Thomas grey
  • Nov 12, 2025
  • 3 min read

Traveling with an infant can be both exciting and challenging, especially for first-time parents. Spirit Airlines understands the unique needs of families traveling with little ones and offers a flexible and affordable Infant Policy designed to make your journey as comfortable and convenient as possible. Whether you’re planning a short domestic trip or a longer vacation, this guide will help you understand everything about Spirit Airlines Infant Policy, including age requirements, ticketing rules, seating options, and helpful travel tips.


1. Age Requirements and Eligibility

According to Spirit Airlines Infant Policy, infants under two years old (24 months) can travel with an accompanying adult. You can choose to carry your baby on your lap (lap infant) or purchase a separate seat for them.

  • Lap Infant: Babies who have not yet turned two years old at the time of travel can sit on an adult’s lap for a small fee on international flights or free of charge on most domestic flights.

  • Seat for Infant: Parents may also buy a separate seat for their infant if they wish to use an FAA-approved child restraint system (CRS) or car seat. This is a great option for longer flights, as it offers more safety and comfort.


2. Documentation Required

When traveling with an infant, Spirit Airlines may request proof of age to ensure the child qualifies for lap infant status. You can bring:

  • A birth certificate, or

  • A passport (for international travel)


3. Lap Infant Policy

Spirit Airlines allows one lap infant per adult (aged 15 or older). If you’re traveling with twins or two infants under the age of two, you’ll need to purchase an additional seat for the second child.

For safety reasons, only one lap child is allowed per seat row on each side of the aircraft due to oxygen mask availability.


4. Seat and Car Seat Guidelines

Parents choosing to buy a seat for their baby must use an FAA-approved car seat or child restraint system (CRS). These seats should fit properly in the aircraft seat and be clearly labeled with “This restraint is certified for use in motor vehicles and aircraft.”

Here are some key points:

  • The car seat must fit within Spirit Airlines’ seat dimensions (approximately 15.5–17 inches wide).

  • Car seats must be placed in a window seat, not in exit rows or aisles.

  • Booster seats are not allowed during takeoff and landing but can be used in-flight after the seat belt sign is off.


5. Baggage and Baby Items

Spirit Airlines is known for its à la carte pricing, but parents can still bring essential baby items free of charge.

Here’s what you can bring:

  • One diaper bag per infant (does not count toward your carry-on limit).

  • Strollers and car seats can be checked at no additional cost.

  • You can also carry baby formula, breast milk, or baby food, subject to TSA screening rules.

Keeping these items well-packed and easily accessible will make your travel smoother.

6. Boarding and Seating Tips

Spirit Airlines offers family pre-boarding, allowing parents with infants or small children extra time to get settled before general boarding starts. Use this time to store your bags, set up your car seat, and make sure your baby is comfortable.

To enhance your experience:

  • Book seats near the front of the aircraft for easier boarding and exit.

  • Consider purchasing the “Big Front Seat” for extra legroom and comfort.

  • Pack snacks, toys, and essentials like wipes and diapers in your diaper bag for easy access.

7. Safety and Comfort Tips

Flying with an infant doesn’t have to be stressful. Here are a few travel-tested tips to make your journey more enjoyable:

  • Feed during takeoff and landing to help relieve ear pressure.

  • Dress your baby in layers for changing cabin temperatures.

  • Carry a light blanket and favorite toy for comfort.

  • Keep extra clothes for both parent and baby in your carry-on.

8. Final Thoughts

The Spirit Airlines Infant Policy makes family travel easier, safer, and more affordable. With options for lap infants, car seat usage, free baby gear check-in, and early boarding, parents can enjoy a stress-free start to their trip.

Understanding the rules before your flight ensures you’re fully prepared, saving you time and avoiding extra costs at the airport. Whether you’re visiting family or heading on a much-needed vacation, following Spirit Airlines Infant Policy guidelines helps you create a smoother, more comfortable journey for you and your little one.

 
 
 

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