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Frontier Airlines' Kids Fly Free: The definitive guide

Oct. 15, 2019
7 min read
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When traveling with kids, one of the biggest expenses of the vacation can be the airfare for the whole family. Of course you can use points and miles to offset your cost, but what if I told you that one airline actually lets your kids fly free ... at least on certain dates?

In early 2019, Frontier Airlines introduced a "Kids Fly Free" offer. With this promotion, children ages 14 and under can fly for free with a paid adult ticket on eligible Frontier flights. Of course, there are stipulations to contend with, but when Frontier says free, they mean it — no extra taxes or fees tacked on for the ticket itself. This offer, along with other family-friendly initiatives from Frontier put it above the other budget carriers in the U.S. for the TPG 2019 best airlines for families rankings.

Related: The Best Credit Cards for Family Travel

You need a Discount Den membership

Although this is an incredible deal, you must have a Discount Den membership, which costs $59.99 per year and is the only way you'll have access to the Kids Fly Free promotion. There are other benefits to this membership, such as lower fares and the ability to book flights earlier than the general public when new flight schedules are released, so the math for it works in your favor if you fly Frontier even just twice a year.

The good thing about this membership is that only one parent typically needs to purchase it since the benefits extend to six people on the reservation. This means the Discount Den subscriber and up to five other people receive access to the lower fares and other perks. When using the Kids Fly Free offer, for every adult (15 years and older), one child can fly for free. And you can take advantage of this offer multiple times on a single reservation. For example, one parent can pay for the Discount Den membership and if you book an eligible flight for two adults and two kids on the reservation, both kids can fly for free.

Note: Your Discount Den membership expires one year after it's purchased, however, you can use the benefits for flights booked after your membership expires as long as you have the membership at the time of booking. This means if your membership is expiring, your kids can still fly for free for a few months after it expires as long as you book the flights in advance.

Eligible 'Kids Fly Free' flights and dates

Unlike the Southwest Companion Pass, which lets you buy one/get one 365 days a year on any scheduled flight, dates and routes are more limited with Frontier. For most of the year, flights on Tuesdays and Wednesdays, as well as some Thursdays and Saturdays, are eligible for the Kids Fly Free promotion. The date requirement changes every so often depending on the time of the year, and holiday time periods are typically blacked out. For example, do not expect your child to fly free during the entire December break, Thanksgiving week or virtually any long weekend.

While Frontier operates some routes to the Caribbean, as well as many routes to cities in Mexico, only U.S. domestic flights are included. Additionally, Frontier has a few dozen other excluded routes, which can change throughout the year depending on the season.

You must book at least 14 days in advance to take advantage of the promotion and only round-trip flights are eligible Kids Fly Free.

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The Frontier Kids Fly Free page lists all of the eligible days of the week and blackout dates (up until the schedule release date) as well as excluded routes.

Same date restrictions for flights Sept. 29, 2019 through April 22, 2020.

Combine the promotion with fare sales

Despite the many restrictions that come along with Kids Fly Free, you can often get a great deal when combining it with one of Frontier's regular fare sales. Frontier frequently offers flight deals, whether it is penny fares or 50% off flights, you can stack the deals as long as those fare sales do not require you to enter a promotion code.

(Summer Hull / The Points Guy)
Both kids are flying free with two parents booked on the flight. (Photo by Summer Hull/The Points Guy.)

Booking your child’s free Frontier flight

To book your child’s free Frontier flight with a Discount Den membership, log in to your Frontier account and search for your desired route. Include the number of adults and children who will be on the reservation. Your flight options will appear and you’ll see the “Kids Fly Free” icon below the flight price on eligible dates. (Note: If you do not have a Discount Den membership, continue with your flight selection and a pop-up window will appear giving you the option to purchase the membership.)

Note: You must book your child's flight at the time of making the initial reservation, you cannot add your child on at a later date.

You’ll then be prompted to customize your fare (including any bundle options) and select your seats, which costs extra per person -- no freebies for the kids. Your reservation’s final pricing will display after you’ve selected any add-ons.

In the sample reservation above, the final price for four passengers (two adults and two children) is just $183.92 round-trip. That is an absolute steal for a whole family to fly from Providence to Orlando during the winter months. Even if you factor in the annual cost of the $59.99 Discount Den membership, you are looking at $243.91 total, or $60.98 per passenger. Since your Discount Den membership is good for an entire year, you can continue to have your Kids Fly Free on many additional Frontier flights for the next twelve months.

Bottom line

Frontier's Kids Fly Free can be a great money-saving offer for families, but remember to consider all the extra charges when comparing prices to another airline. Because Frontier is a low-cost carrier, you'll pay for carry-on bags that don't fit under your seat and seat for advance seat assignments if you need those. Even though you are not paying for your child’s plane ticket, you will still have to pay these add-on fees for each passenger in your party if you choose to add them.

Here are some additional tips to help you weigh the pros and cons of flying budget carriers:

Featured by robertcicchetti / Getty Images

Featured image by Getty Images

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TPG featured card

Best card for premium perks while traveling
TPG Editor‘s Rating
Card Rating is based on the opinion of TPG‘s editors and is not influenced by the card issuer.
4 / 5
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Rewards

2 - 10X points
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75,000 bonus miles
Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel

Annual Fee

$395

Recommended Credit

740-850
Excellent
Credit ranges are a variation of FICO© Score 8, one of many types of credit scores lenders may use when considering your credit card application.

Why We Chose It

The Capital One Venture X card is one of the best all-round travel credit cards ever launched. Not only is it offering a tremendous welcome bonus, but cardholders can earn tons of miles on everyday spending and receive a 10,000-mile anniversary bonus to boot. Its annual fee is $395, but cardholders can count on up to $300 in statement credits toward travel booked through Capital One Travel each year and other valuable benefits like access to Priority Pass lounges and Capital One’s own growing family of airport lounges.

Pros

  • Excellent welcome offer worth 75,000 miles after you spend $4,000 on purchases in the first three months.
  • Up to $300 in annual travel statement credits toward bookings make through Capital One Travel.
  • 10,000 bonus miles (worth $100 toward travel) each account anniversary.

Cons

  • The $395 annual fee might be expensive for some, but this card’s benefits provide much more value than that.
  • If you don’t travel frequently, this might not be the best card for you.
  • Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel
  • Receive up to $300 back annually as statement credits for bookings through Capital One Travel, where you'll get Capital One's best prices on thousands of options
  • Get 10,000 bonus miles (equal to $100 towards travel) every year, starting on your first anniversary
  • Earn unlimited 10X miles on hotels and rental cars booked through Capital One Travel and 5X miles on flights booked through Capital One Travel
  • Earn unlimited 2X miles on all other purchases
  • Unlimited complimentary access for you and two guests to 1,400+ lounges, including Capital One Lounges and our Partner Lounge Network
  • Receive up to a $100 credit for Global Entry or TSA PreCheck®
  • Use your Venture X miles to easily cover travel expenses, including flights, hotels, rental cars and more—you can even transfer your miles to your choice of 15+ travel loyalty programs
  • Named editors' choice for "Best New Credit Card of 2021" by The Points Guy
  • Earn 10 miles per dollar when you book on Turo, the world's largest car sharing marketplace, through May 16, 2023
Best card for premium perks while traveling
TPG Editor‘s Rating
Card Rating is based on the opinion of TPG‘s editors and is not influenced by the card issuer.
4 / 5
Go to review

Rewards Rate

10XEarn unlimited 10X miles on hotels and rental cars booked through Capital One Travel
5X5X miles on flights booked through Capital One Travel.
2X2 Miles per dollar on every purchase, every day
  • Intro Offer
    Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel

    75,000 bonus miles
  • Annual Fee

    $395
  • Recommended Credit
    Credit ranges are a variation of FICO© Score 8, one of many types of credit scores lenders may use when considering your credit card application.

    740-850
    Excellent

Why We Chose It

The Capital One Venture X card is one of the best all-round travel credit cards ever launched. Not only is it offering a tremendous welcome bonus, but cardholders can earn tons of miles on everyday spending and receive a 10,000-mile anniversary bonus to boot. Its annual fee is $395, but cardholders can count on up to $300 in statement credits toward travel booked through Capital One Travel each year and other valuable benefits like access to Priority Pass lounges and Capital One’s own growing family of airport lounges.

Pros

  • Excellent welcome offer worth 75,000 miles after you spend $4,000 on purchases in the first three months.
  • Up to $300 in annual travel statement credits toward bookings make through Capital One Travel.
  • 10,000 bonus miles (worth $100 toward travel) each account anniversary.

Cons

  • The $395 annual fee might be expensive for some, but this card’s benefits provide much more value than that.
  • If you don’t travel frequently, this might not be the best card for you.
  • Earn 75,000 bonus miles when you spend $4,000 on purchases in the first 3 months from account opening, equal to $750 in travel
  • Receive up to $300 back annually as statement credits for bookings through Capital One Travel, where you'll get Capital One's best prices on thousands of options
  • Get 10,000 bonus miles (equal to $100 towards travel) every year, starting on your first anniversary
  • Earn unlimited 10X miles on hotels and rental cars booked through Capital One Travel and 5X miles on flights booked through Capital One Travel
  • Earn unlimited 2X miles on all other purchases
  • Unlimited complimentary access for you and two guests to 1,400+ lounges, including Capital One Lounges and our Partner Lounge Network
  • Receive up to a $100 credit for Global Entry or TSA PreCheck®
  • Use your Venture X miles to easily cover travel expenses, including flights, hotels, rental cars and more—you can even transfer your miles to your choice of 15+ travel loyalty programs
  • Named editors' choice for "Best New Credit Card of 2021" by The Points Guy
  • Earn 10 miles per dollar when you book on Turo, the world's largest car sharing marketplace, through May 16, 2023