Last Updated on July 25, 2026 by Daniel Globe
Frontier Airlines can advertise very low fares because its cheapest ticket includes fewer services than many travelers expect. The airline separates the flight itself from extras such as a full-size carry-on bag, advance seat selection, checked baggage, early boarding, and some types of booking support. This model can produce real savings, but only when the final checkout total fits the way you travel.
Quick Answer
Frontier Airlines is cheap because its Basic fare includes only the flight and one qualifying personal item. Carry-on bags, checked bags, seat selection, airport assistance, and other services may cost extra. Frontier also controls costs through an all-Airbus fleet, high-density seating, digital self-service, and optional paid add-ons.
Key Takeaways
- Frontier’s lowest fare generally includes one personal item, not a standard carry-on suitcase.
- Economy, Premium, and Business bundles include more services and may cost less than buying each extra separately.
- Bag, seat, and service fees vary by flight and purchase timing, so the advertised fare is not always the final price.
- Frontier is most likely to be a bargain for travelers who pack lightly, use the app, and do not need flexible ticket rules.
- The right comparison is Frontier’s complete checkout total against another airline’s complete checkout total for the same trip.
Why Frontier Airlines Tickets Can Be So Cheap
Frontier Airlines, founded in Denver in 1994, operates as an ultra-low-cost carrier. Instead of including a long list of services in every ticket, it sells a low starting fare and lets passengers add the services they need.
This system is called unbundled pricing. A traveler carrying only a small backpack may pay close to the advertised fare. Another traveler on the same flight may pay substantially more after adding a carry-on suitcase, a checked bag, a preferred seat, early boarding, or flexible change terms.
Frontier’s cheapest price is best treated as the starting point of a trip calculation, not automatically as the final cost.
The model works because passengers who do not use a service do not have to pay for that service through a higher bundled ticket price. It also means travelers must read the fare details more carefully than they might with a more inclusive ticket.
How Frontier Keeps Its Operating Costs Low
Frontier’s low fares are supported by several operating and sales practices rather than one single cost-saving measure.
An All-Airbus Single-Aisle Fleet
Frontier operates Airbus A320-family and A321-family aircraft. Although these are not one identical aircraft type, they share many systems and operating characteristics. Fleet commonality can simplify pilot training, maintenance planning, parts management, and daily operations.
Frontier reported 183 Airbus single-aisle aircraft as of March 31, 2026. The airline also uses high-density seating and weight-saving measures as part of its low-cost model. Its current company profile is available through Frontier’s investor-relations website.
High Aircraft Utilization and Dense Seating
Airlines earn revenue when aircraft are flying, not when they are sitting at a gate. A low-cost airline therefore has a strong incentive to schedule aircraft efficiently, shorten routine ground time where practical, and sell more seats per flight.
A higher-density cabin spreads many operating costs across more passengers. The tradeoff is that standard seating may feel tighter and fewer amenities are included automatically.
Optional Services Instead of Universal Extras
Frontier charges separately for many services that would otherwise have to be funded through every ticket. Examples can include bags, seat selection, priority boarding, snacks, pets, voluntary ticket changes, and in-person airport assistance.
This does not make those services free to provide. It moves the cost toward the passengers who choose them.
Digital Self-Service
Frontier encourages customers to book, check in, obtain a boarding pass, add bags, and manage reservations through its website or mobile app. Some assisted services can carry an additional charge, while exemptions apply in certain situations, including qualifying disability assistance.
Frontier’s current optional-service list includes an airport-agent assistance charge of up to $25 per passenger, per direction, and a web check-in charge of up to $5. Travelers can generally avoid the web check-in charge by using Frontier’s mobile app.
Note: Airline fees and fare products can change. Confirm every inclusion and charge on the final booking screen before paying.
What Frontier’s Basic Fare Includes
A Frontier Basic fare is designed for travelers who want the lowest starting price and are comfortable purchasing other services separately. It generally includes transportation and one qualifying personal item.
The Basic fare does not automatically include a standard carry-on suitcase, checked bag, advance seat selection, or the same fee waivers included with higher bundles.
| Fare option | Main inclusions | Best suited to |
| Basic | One personal item; other bags and advance seat selection available for purchase; change or cancellation fees may apply | Light packers with firm travel plans |
| Economy bundle | Personal item, carry-on bag, standard seat selection, and no Frontier change or cancellation fee | Travelers who need a carry-on and a selected seat |
| Premium bundle | Economy benefits plus a Premium seat and Board First with overhead-bin access | Travelers who value extra legroom and earlier boarding |
| Business bundle | Premium benefits plus a front-cabin UpFront Plus seat and two checked bags weighing up to 50 pounds each | Travelers checking multiple bags or wanting the most included benefits |
Bundle availability and the exact front-cabin product can depend on the flight and aircraft. Frontier has also been introducing First Class seating during 2026, so review the seat description shown for your specific itinerary.
Frontier Personal Item, Carry-On, and Checked-Bag Rules
Every Frontier ticket includes one personal item that meets the airline’s size and weight restrictions. Larger carry-on and checked bags can be purchased separately or included through a qualifying bundle or status benefit.
| Bag type | Maximum size | Standard weight limit | Basic-fare treatment |
| Personal item | 18 × 14 × 8 inches, including handles, wheels, and straps | Up to 35 pounds | One included |
| Carry-on bag | 24 × 16 × 10 inches, including handles, wheels, and straps | Up to 35 pounds | Costs extra unless included through a bundle or benefit |
| Checked bag | Up to 62 total linear inches | Up to 40 pounds for a standard individually purchased bag | Costs extra unless included through a qualifying bundle or benefit |
Frontier states that bag prices vary according to the route, travel dates, and when the bag is purchased. Bags are normally cheapest during the initial booking process and more expensive at the airport or boarding gate.
Warning: A personal item that exceeds Frontier’s limit can be charged as a carry-on at boarding. Measure the bag with its handles, wheels, straps, and packed contents included.
Before booking, check the current rules and itinerary-specific price through Frontier’s official bag-options page.
Seat Selection and Family Seating
Basic-fare passengers do not have to purchase a seat assignment. A passenger who skips paid seat selection will receive an available seat assignment without an advance-selection charge. However, adults traveling together may be separated.
Frontier offers several seat categories:
- Standard: A regular seat that is not categorized as Preferred, Premium, or a front-cabin product.
- Preferred: A standard-legroom seat positioned closer to the front.
- Premium: A seat with extra legroom.
- UpFront Plus: A front-row-area window or aisle seat with the middle seat kept empty on equipped flights.
- First Class: A newer 2-by-2 front-cabin product being introduced gradually during 2026.
Frontier’s optional-services page lists paid seats from $15 per passenger, per segment. The actual amount depends on the flight, seat category, availability, and purchase timing.
Does Frontier Seat Children With an Adult?
Frontier says a child age 13 or younger will be seated next to an accompanying adult over age 13 without an added seat-selection charge when its conditions are met. The travelers must be on the same reservation, adjacent seats must be available, and the group must either select seats for everyone or skip seat selection for everyone.
Frontier may not display the assignments immediately, but states that qualifying adjacent assignments will be provided no later than the day before departure.
Pro Tip: Do not purchase a seat for only one person in a family reservation and skip seats for everyone else. That can interfere with Frontier’s stated family-seating conditions.
Who Benefits Most From Frontier’s Pricing Model?
Frontier’s pricing structure can work well when the passenger’s needs closely match the Basic fare. It becomes less attractive when several paid services are necessary.
| Traveler profile | Why Frontier may work | What to check |
| Solo light packer | Can travel with the included personal item and accept a randomly assigned seat | Personal-item dimensions and schedule reliability |
| Weekend traveler | May avoid checked luggage and take advantage of a low nonstop fare | Carry-on cost, airport transportation, and flight times |
| Family | Can use qualifying family seating and may benefit from eligible Discount Den promotions | Total baggage cost for every passenger |
| Traveler checking several bags | A Business bundle may include useful baggage benefits | Bundle price versus another airline’s inclusive fare |
| Traveler with uncertain plans | A bundle can remove Frontier’s change and cancellation fee | Fare differences, refundability, and credit rules |
How to Compare Frontier With Another Airline
Do not compare Frontier’s Basic fare with a competitor’s fare that includes bags, seats, or greater flexibility. Build the same trip on both airlines and compare the final totals.
Use this formula:
Real trip cost = airfare + seat cost + carry-on cost + checked-bag cost + booking or assistance charges + change protection + onboard purchases + ground-transportation differences
Calculate the amount for every passenger and every direction. A $45 bag charge on a one-way screen becomes $90 for a round trip. For a family of four, that same type of charge could add $360 to the trip.
Example Comparison
Suppose Airline A advertises a $59 one-way fare and Airline B advertises a $109 one-way fare. Airline A is not automatically $50 cheaper. A traveler who adds a $60 carry-on, a $25 seat, and a $5 check-in service would reach $149 before taxes or other differences.
The example amounts are illustrative, not Frontier price quotes. Frontier uses itinerary-specific pricing, so use the amounts displayed during your booking session.
Note: Competitor policies change too. Compare the current fare products instead of relying on an airline’s old reputation for free bags, open seating, or flexible tickets.
Tips for Saving Money on Frontier Airlines
1. Price the Whole Trip Before Paying
Add every bag, seat, and service you expect to use. Then compare the total with another airline before entering payment information.
2. Measure Your Personal Item at Home
Keep the packed bag within 18 × 14 × 8 inches, including wheels, handles, and straps. Do not assume that a backpack automatically qualifies.
3. Buy Bags Early
Frontier states that baggage normally costs less during booking than at the airport. Add a necessary bag before arriving at the terminal rather than waiting for the boarding gate.
4. Compare a Bundle With Separate Add-Ons
If you need a carry-on and a seat, an Economy bundle may cost less than buying both separately. Premium and Business bundles may also make sense when their seat, boarding, or checked-bag benefits match your needs.
5. Use the Frontier App
The app can be used for check-in, boarding passes, trip management, and service purchases. Frontier currently lists a web check-in fee of up to $5, while app check-in avoids that specific charge.
6. Skip Paid Seat Selection Only When Separation Is Acceptable
A free seat can be assigned when you do not choose one. Adult companions may not sit together, so decide whether that uncertainty is worth the savings.
7. Bring Food or Budget for Onboard Purchases
Complimentary snacks and drinks are not a standard Basic-fare feature. Frontier’s optional-services page lists onboard snacks and drinks from $3.50.
8. Check Transportation Costs at Both Airports
A cheaper flight may use a departure time or airport that increases parking, hotel, rideshare, or rental-car costs. Include those costs in the trip comparison.
9. Keep Secure Essentials in Your Personal Item
Place medication, identification, keys, chargers, and valuables in the item that remains with you. Travelers trying to reduce baggage may also find secure-pocket clothing useful; this guide to travel pants with hidden pockets discusses that type of storage.
Pro Tip: Take a screenshot of the final fare inclusions and bag purchases after booking. It gives you a quick reference when packing and checking in.
Frontier Change and Cancellation Fees
Frontier’s flexibility depends heavily on the fare product. Economy, Premium, and Business bundles currently include no Frontier change or cancellation fee. A fare difference can still apply when changing flights, and a cheaper replacement itinerary may not produce a residual refund.
For Basic fares or Standard tickets purchased on or after June 5, 2026, Frontier publishes the following voluntary change fees:
| Time before departure | Basic-fare change fee |
| 60 days or more | $0 per passenger, per direction |
| 59 to 7 days | $79 per passenger, per direction |
| 6 days or fewer, including same-day changes | $129 per passenger, per direction |
Frontier lists a $129 voluntary cancellation fee per passenger, per direction for Basic or Standard bookings made on or after June 5, 2026. If the fee exceeds the ticket’s remaining value, no credit may remain.
A booking can generally be canceled for a full refund within 24 hours of purchase when the flight was booked at least seven days before departure. Review the exact conditions on Frontier’s current change and cancellation page.
Warning: Change or cancel before the scheduled departure. Frontier can treat a missed check-in or boarding deadline as a no-show and cancel the remaining itinerary value.
Airline-Caused Cancellation Is Different
A voluntary cancellation is not the same as a cancellation or significant schedule change made by the airline. Under U.S. Department of Transportation rules, passengers are generally entitled to an automatic refund when an airline cancels or significantly changes a covered flight and the passenger rejects the alternative transportation, voucher, or credit offered.
DOT refund rights and current guidance are available on the Department of Transportation ticket-refunds page.
Discount Den and GoWild Memberships
Discount Den
Discount Den is Frontier’s paid fare club. It provides access to eligible member fares and allows the member to share qualifying fares with other passengers on the same reservation, subject to the current membership terms.
Frontier currently lists a $59.99 annual membership price plus a $50 enrollment fee for new members, making the standard first-year total $109.99 when no enrollment promotion applies. Returning members who previously canceled may also be treated as new enrollees.
The Kids Fly Free benefit applies only on eligible flights and dates. Frontier states that one child under age 15 can fly free for each qualifying adult Discount Den fare, but taxes, fees, availability restrictions, and other conditions apply.
Before joining, estimate the savings on the trips you realistically expect to book. A membership is useful only when the fare savings and eligible benefits exceed the membership cost.
Review the current details on Frontier’s Discount Den page.
GoWild Pass
GoWild is an all-you-can-fly pass product with separate membership costs, taxes, fees, blackout dates, availability limits, and booking restrictions. Bags and seat assignments are generally sold separately.
The pass is most suitable for highly flexible travelers who can work around limited inventory and booking windows. It should not be treated as a guaranteed seat on any desired flight.
Potential Drawbacks of Frontier’s Pricing Model
Frontier’s low base fare can be valuable, but the model has disadvantages for certain travelers.
- The final price can rise quickly: Bags, seats, assistance, flexibility, and onboard purchases can eliminate the initial fare advantage.
- Basic-fare flexibility is limited: Changes and cancellations close to departure can cost more than a deeply discounted ticket.
- Standard checked bags have a 40-pound limit: This is lower than the 50-pound standard used with many traditional airline tickets, although Frontier’s Business bundle includes two bags up to 50 pounds each.
- Travel companions may be separated: Adults who skip seat selection should be prepared for different seat assignments.
- More self-service is expected: Travelers who want in-person help for routine tasks may face additional charges unless an exemption applies.
- Food and drinks cost extra: Travelers should bring permitted food or include onboard purchases in their budget.
- Recovery options may be limited by schedule: When an airline operates fewer flights on a particular route, a cancellation can leave fewer same-day alternatives.
These drawbacks do not mean Frontier is automatically a bad airline. They mean the passenger must evaluate the product being purchased rather than judging the trip from the advertised fare alone.
Frontier Airlines’ Low Prices and the Future of Budget Air Travel
Frontier is cheapest for travelers who can use its Basic product as designed: one qualifying personal item, digital self-service, no paid seat preference, and firm travel plans. Those passengers may obtain a genuinely low total fare.
Travelers who need carry-on bags, checked luggage, selected seats, earlier boarding, or flexible cancellation should compare Frontier’s bundles before buying separate extras. In some cases, a bundle will provide the best Frontier value. In others, a more inclusive fare from another airline will cost less overall.
The most reliable booking rule is simple: build the exact trip you intend to take, continue to the final checkout screen, and compare complete totals. Frontier’s advertised fare explains where the savings begin, but your bags, seat needs, flexibility, and travel habits determine whether the trip stays cheap.
Frequently Asked Questions
What makes Frontier Airlines so cheap?
Frontier keeps its starting fares low by including fewer services in the Basic fare and charging separately for optional items. It also uses an all-Airbus single-aisle fleet, high-density seating, digital self-service, and a cost-focused operating model.
What is included in a Frontier Basic fare?
A Basic fare includes transportation and one personal item measuring no more than 18 × 14 × 8 inches and weighing no more than 35 pounds. A standard carry-on bag, checked bag, and advance seat selection cost extra unless another benefit applies.
Does Frontier charge for a carry-on bag?
Frontier normally charges Basic-fare passengers for a standard carry-on bag. Economy, Premium, and Business bundles include a carry-on. Elite-status and other qualifying benefits may also provide an allowance.
Do I have to pay to choose a seat on Frontier?
No. A Basic-fare passenger can skip paid seat selection and receive an available seat assignment. Adult companions may be separated. Qualifying families with a child age 13 or younger can receive adjacent seating under Frontier’s family-seating conditions.
Are Frontier bags cheaper when purchased early?
Frontier says bags are normally cheapest when added during the initial booking. Prices can increase later and are generally higher at the airport or boarding gate.
Is Frontier cheaper than other airlines after fees?
It depends on the trip. Frontier can be much cheaper for someone carrying only a personal item. A traveler adding bags, selected seats, and flexibility may find that another airline or a Frontier bundle offers a lower complete price.
Can I avoid Frontier’s change and cancellation fees?
Economy, Premium, and Business bundles currently waive Frontier’s change and cancellation fees, although fare differences and other restrictions can still apply. Basic fares can also be changed without a Frontier change fee at least 60 days before departure under the current policy.
Sources
- Frontier Airlines Bag Options — personal-item, carry-on, checked-bag, size, weight, and bundle rules.
- Frontier Bundle Differences — Economy, Premium, and Business inclusions.
- Frontier Optional Services — current seat, assistance, check-in, boarding, and other optional charges.
- Frontier Change and Cancel Policy — current Basic-fare and bundle fee rules.
- Frontier Discount Den — membership price, fare access, shared savings, and Kids Fly Free conditions.
- U.S. Department of Transportation Ticket Refunds — federal refund rules for canceled or significantly changed flights.