Updated July 2026. Airline fees and benefits may change; travelers are encouraged to confirm final terms before booking.
Southwest vs Frontier Airlines – Pros & Cons for Budget Travel & In-Flight Experience
Updated July 2026. Airline fees and benefits may change; travelers are encouraged to confirm final terms before booking.
You pull up two options for the same Friday morning route. Frontier shows $59. Southwest shows $118. (Illustrative figures only.) The decision looks made.
Then you add the details. You need a carry-on, not just a backpack. You'd like a seat next to your travel partner. There's a chance you'll move the trip a week. By the time those pieces are attached, the gap has narrowed and depending on what you're carrying, it may have closed entirely.
That's the honest starting point for any southwest vs frontier airlines comparison in 2026. Both carriers sell a stripped-down base fare and charge for what sits on top, but they strip different things away. Southwest went through the biggest overhaul in its history across 2025 and 2026. Frontier rebuilt its bundles and added premium seating. Much of the advice online still describes airlines that no longer exist.
Quick takeaway: The lowest advertised fare is not automatically the lowest trip cost.
Southwest vs. Frontier Airlines at a Glance
Southwest | Frontier | |
Fare model | Four bundles: Basic, Choice, Choice Preferred, Choice Extra | Basic fare plus Economy, Premium and Business bundles |
Free personal item | Yes, all fares | Yes, all fares (14 x 18 x 8 in.) |
Free on every fare (up to 24 x 16 x 10 in.) | Paid on Basic; included in bundles (up to 24 x 16 x 10 in., 35 lbs.) | |
Fees on Basic, Choice, Choice Preferred; two free on Choice Extra | Paid on Basic, Economy and Premium; two included with Business | |
Seat assignment | Assigned on all fares since Jan. 27, 2026; chosen at booking on Choice and above, assigned at check-in on Basic | Paid on Basic; included from Economy up |
Preferred and Extra Legroom seats | Premium, UpFront Plus and new 2x2 First seats on refreshed aircraft | |
Change flexibility | No change or cancel fee on any fare; Basic requires a fare upgrade to change | No change or cancel fees with Economy, Premium or Business; fees apply on Basic |
Wi-Fi | $8, free for Rapid Rewards members, on equipped aircraft | Not currently offered |
Entertainment | Free streaming on Wi-Fi-enabled aircraft | None; no seatback screens |
Food and drinks | Complimentary nonalcoholic drinks and snacks; alcohol for purchase | Everything for purchase, including water |
Best suited for | Travelers with bags, changeable plans or a preference for included extras | Travelers who pack into a personal item and decline add-ons |
Most budget airline comparison USA roundups stop at that first row. Two qualifications matter more. Southwest's carry-on is genuinely free on every fare, including its cheapest, the single biggest structural difference between these airlines. And Frontier's amenity gaps aren't oversights; they're why the base fare goes as low as it does.
How Southwest and Frontier Price Their Tickets
Both airlines use bundles now. The difference is what the cheapest rung includes.
Southwest fare types
Southwest Airlines sells four bundles. Basic is the entry point: your seat is assigned at check-in rather than chosen at booking, you board last, flight credit expires in six months, and changes require upgrading the fare.
Choice adds seat selection at booking, free same-day changes and standby, and 12-month flight credit. Choice Preferred adds seats nearer the front, refundability and priority airport lanes. Choice Extra includes an extra-legroom seat, Group 1 boarding and two free checked bags.
Every one of those fares includes a free carry-on and a personal item — Basic too.
Frontier base fares and bundles
Frontier Airlines prices the opposite way. Its Basic fare includes a personal item and nothing else; carry-on, checked bags, seat selection and early boarding are separate purchases, and change or cancellation fees apply.
The Economy bundle adds a carry-on, a standard seat and no change or cancellation fees. Premium moves you to an extra-legroom seat and adds Board First. Business includes two checked bags up to 50 pounds each and an UpFront Plus seat with a blocked middle. Bundle pricing varies by route and date, and buying at initial booking costs less than adding items later.
Why the lowest fare can be misleading
The southwest vs frontier price question breaks down the moment you compare like with like. A Frontier Basic fare and a Southwest Basic fare aren't the same product. One includes a bag in the overhead bin; the other doesn't.
Frontier's bag and seat fees are dynamic, changing by route, date and how early you buy and buying at the gate is the most expensive option there is. Southwest's checked-bag fees are published and fixed: for tickets booked on or after April 9, 2026, the first checked bag is $45 and the second is $55, each way, on Basic, Choice and Choice Preferred.
Compare fares with the same bags and seats attached, or you're comparing two different trips.
What Does a Southwest or Frontier Trip Really Cost?
Total trip cost = airfare + baggage + seat selection + optional services + airport transportation + potential change costs
Scenario 1: Solo traveler with a personal item Nothing to add on either airline, so the lower base fare wins, usually Frontier. This is the scenario it's built for.
Scenario 2: Traveler with a carry-on and selected seat On Southwest the carry-on costs nothing on any fare, so you're only deciding whether to move from Basic to Choice for seat selection. On Frontier both items are purchases, which usually means buying at least the Economy bundle. A fare that started $60 lower can land within a few dollars of Southwest.
Scenario 3: Traveler checking one bag Southwest's first checked bag is $45 each way on most fares; $90 round trip, unless Choice Extra, A-List status or a Rapid Rewards card covers it. Frontier's checked-bag pricing is dynamic and sometimes lower than its own carry-on fee when bought early. Neither is reliably cheaper.
Scenario 4: Family of four Four tickets, four seat assignments so nobody's separated, bags, onboard snacks, and a real chance plans shift. On Frontier, seat selection is per person on Basic and everything onboard is paid, including water. On Southwest, carry-ons are free, nonalcoholic drinks and snacks are complimentary, and no fare carries a change or cancel fee.
Frontier can be cheaper for personal-item-only travelers, but Southwest may offer better total value once bags, seats and flexibility are required.
Southwest vs. Frontier Baggage Policies
Personal items
Frontier publishes a firm 14 x 18 x 8 inch limit and enforces it with gate sizers. Southwest doesn't publish equivalent dimensions — the item must fit under the seat in front of you. Frontier is the stricter of the two, because on a Basic fare that bag is your entire allowance.
Carry-on bags
The clearest difference between these airlines. Southwest includes a carry-on up to 24 x 16 x 10 inches on every fare, with no fare-based restriction on overhead-bin access — see the full Southwest carry-on rules for details. Frontier allows the same dimensions but charges for it on Basic fares and caps it at 35 pounds.
Checked bags
Southwest allows up to 50 pounds and 62 linear inches, at $45 and $55 for the first and second bag on tickets booked on or after April 9, 2026. Choice Extra fares and A-List Preferred members get two free; A-List members and Rapid Rewards cardmembers get the first free, extending to up to eight passengers on the same reservation. Active-duty military travel with free bags.
Frontier includes two checked bags with the Business bundle only; on other fares they're priced individually per itinerary, as its baggage policy sets out. The weight limits also differ: Frontier's standard checked bag tops out at 40 pounds — ten below Southwest's 50 — so a bag packed to a Southwest habit can trigger Frontier overweight fees, which begin at 41 pounds.
Overweight and oversized baggage
Southwest publishes these clearly: 51 to 70 pounds adds $100 on top of the standard fee, 71 to 100 pounds adds $200, and oversized bags between 63 and 80 inches add $200. Frontier applies its own charges per bag, per direction.
A single heavy suitcase can cost more than the fare difference between these airlines. Weigh before you go.
Which airline is better for baggage?
Personal item only: Frontier, usually — neither charges, so the lower fare wins.
Carry-on travelers: Southwest, clearly. Free on every fare there, paid on Frontier's cheapest.
One checked bag: Route-dependent. Compare Southwest's published fee against Frontier's quote for your itinerary.
Families with multiple bags: Weigh Frontier's Business bundle against Southwest's Choice Extra, or check whether a card or status already covers your bags.
Southwest vs. Frontier Seats and Cabin Comfort
Put the Southwest vs Frontier economy cabins side by side and the differences are structural rather than cosmetic, recline, spacing and how you're assigned a seat all work differently.
Southwest seating experience
Southwest now assigns seats on every fare, effective for travel on or after Jan. 27, 2026 — ending more than 50 years of open seating. Three seat types exist: Standard toward the back, Preferred with standard legroom nearer the front, and Extra Legroom at the front and exit rows with up to five additional inches over the other two. Choice and higher select at booking; Basic is assigned at check-in. Paid upgrades range widely by segment.
Frontier seating experience
Frontier's standard seats are pre-reclined and densely spaced. Preferred sits nearer the front, Premium adds legroom, and UpFront Plus offers a front-row seat with a guaranteed empty middle. Frontier is also introducing wider 2x2 First seats in the first two rows, but this is a fleet-by-fleet retrofit — check the seat map at booking rather than assuming your aircraft has them. On a Basic fare with no seat purchased, Frontier assigns one automatically, which can mean a middle seat at the back.
Which airline is more comfortable?
Under two hours, the difference is modest; a pre-reclined Frontier seat is fine for 90 minutes and the savings may be worth it. On longer domestic flights the gap opens — no power outlets and no Wi-Fi matter more at hour four. Seat measurements vary by aircraft configuration on both carriers.
Southwest vs. Frontier First Class and Business Class: What Actually Exists
Searches for southwest vs frontier first class and southwest vs frontier business class come up often, and the honest answer surprises people: neither airline sells a traditional first or business class cabin the way American, Delta or United do. If a true lie-flat cabin is what you're after, it lives on the legacy carriers and comparing business class deals across them is where the real savings tend to hide.
Southwest has never operated a premium cabin. Its aircraft are single-class, and the closest equivalent is an Extra Legroom seat, a standard seat with up to five additional inches of legroom at the front and exit rows, included with Choice Extra or bought separately. The old Business Select fare, which some older articles still reference, is now Choice Extra. It's a fare bundle with earlier boarding and included bags, not a separate cabin.
Frontier is closer, but not there either. Its Business bundle is likewise a fare bundle rather than a cabin; it packages two checked bags, an UpFront Plus seat and Board First. Frontier is retrofitting wider 2x2 First seats into the first two rows of refreshed aircraft, and those are a genuinely distinct seat product. They're recliners rather than lie-flat, without a dedicated cabin service, and availability depends on whether your specific aircraft has been converted.
Neither airline offers true first or business class. Compare extra-legroom products and fare bundles instead, and check the seat map for the aircraft flying your route.
Boarding and Overhead-Bin Space
Southwest boards by numbered groups 1 through 8, assigned by fare bundle, tier, cardmember status and seat location. Higher bundles and elite tiers board earliest — Choice Extra and A-List Preferred are near the front of the order, while Basic boards last. Because the exact group depends on your fare, status and seat, confirm your assigned group at check-in.
Frontier boards Business bundle passengers and Board First purchasers first, then everyone else by seat location and check-in order.
The practical difference: on Southwest everyone has a free carry-on, so bins fill fast and late boarding can mean gate-checking. On Frontier fewer passengers paid for a carry-on, so bin pressure is lower — but if you did pay, boarding late risks the space you bought.
Wi-Fi, Entertainment, Power and Cabin Service
Southwest offers Wi-Fi at $8 per device, free for Rapid Rewards members, on equipped aircraft, with free streaming entertainment on those same planes, though licensing limits which content appears on a given flight. Nonalcoholic drinks and snacks are complimentary; alcohol is sold on select flights over 250 miles.
Frontier currently offers no Wi-Fi, no TV or movies, no seatback screens and no power outlets. The airline has said it will begin installing Starlink in 2027, an announced plan, not a current amenity. Food and drinks are purchase-only, including water.
If cabin amenities factor into your decision, Southwest is the only one of the two currently offering them.
Frontier vs. Southwest Safety: What the Regulatory Picture Shows
Travelers researching frontier vs southwest safety are usually asking whether a cheaper ticket means a lower safety standard. It doesn't. Both are U.S. scheduled carriers operating under the same FAA Part 121 certification, subject to identical maintenance, training, crew-rest and inspection requirements. Fare level is not a regulatory category.
Both also run single-family fleets, which the industry generally regards as an operational advantage: Southwest flies Boeing 737 variants, Frontier flies the Airbus A320 family. Common fleets simplify pilot training and maintenance procedures.
In operating history, Frontier has not had a fatal accident. Southwest's record includes two fatal events, a 2005 runway overrun at Chicago Midway in which a child in a vehicle on the ground was killed, and a 2018 engine failure that resulted in one passenger death. Both prompted investigations and subsequent procedural changes.
Reading those histories as a safety ranking would be a mistake, because fleet size, flight volume and decades of operation aren't comparable between the two. U.S. commercial aviation fatality rates are extraordinarily low across all carriers. Travelers who want to evaluate this properly should consult NTSB accident records and FAA enforcement data directly rather than relying on airline comparison rankings, including this one.
Both airlines meet identical federal safety requirements. A lower fare does not indicate lower regulatory oversight.
Flight Changes, Cancellations and Credits
Southwest charges no change or cancel fee on any fare, with a qualifier. On Basic, changing means upgrading to a higher bundle plus any fare difference, and credit expires in six months. Choice and above generate a Transferable Flight Credit valid 12 months. Choice Preferred and Choice Extra are refundable to the original payment method when canceled at least 10 minutes before departure. Miss that window and funds may be forfeited entirely.
Frontier waives change and cancel fees on Economy, Premium and Business bundles; Basic fares don't get that. Canceling a bundled ticket returns a travel credit valid 12 months, non-transferable, with fare differences still applying.
"No change fee" never means changing is free. It means one specific fee was removed. The fare difference is usually the larger number.
Southwest vs. Frontier for Families
Frontier guarantees adjacent seating for children 13 and under with an accompanying adult at no extra cost across all fare types, subject to stated conditions. Southwest assigns families on the same reservation to the same boarding group and works to seat children under 13 with an adult. Confirm the current terms with each airline before booking, since the mechanics differ.
Southwest's included carry-ons help when managing four people's belongings, complimentary drinks and snacks cut onboard spending, and fee-free changes matter when a child gets sick two days out. Strollers and car seats check free.
Frontier can still win for families traveling light where its fares are substantially lower — particularly if you buy a bundle covering seats and bags at one price. Adding extras piecemeal after booking the cheapest fare is the most common family mistake. Our best airlines for families comparison covers the wider field.
Route Networks, Airports and Flight Schedules
Southwest's domestic network is broad, and it serves convenient secondary airports: Chicago Midway, Dallas Love Field, Houston Hobby — that can shorten your ground trip. Frontier operates a leaner network around Denver, Orlando, Las Vegas and other focus cities, generally with fewer weekly departures per route.
Frequency is a hidden cost. If a route runs once daily and that flight cancels, your realistic options are tomorrow or another airline at walk-up prices.
The airport matters too. A fare $50 cheaper from an airport 60 miles away can cost more after parking, a rideshare or a hotel night for an early departure. Nonstop versus connecting deserves the same scrutiny — a connection saving $40 but adding five hours has a real price, just not one on the fare screen.
Loyalty Programs and Credit Card Benefits
Rapid Rewards earns by fare bundle, from 2x per dollar on Basic to 14x on Choice Extra. Points don't expire, there are no blackout dates and reward-seat availability is uncapped, making redemption unusually predictable. A-List and A-List Preferred add free checked bags, earlier boarding and priority lanes. Southwest's co-branded cards can cover the first checked bag for the cardmember and up to eight companions on one reservation — enough to change the math for a family.
Frontier Miles offers elite tiers where seat selection and bag allowances become included at higher levels, plus its own co-branded card.
Neither program should decide your ticket alone. But if you already hold status or a card, run the numbers with those benefits applied — they can flip the comparison. And if you're just starting out, knowing how to turn travel rewards and airline miles into free flights is what makes either program worth chasing in the first place.
Frontier or Southwest: Which Is Better for Each Traveler?
The "Frontier or Southwest — which is better?" question has no single answer, because these airlines optimize for different passengers.
Best for personal-item-only travelers Frontier. You're using the airline as designed and paying for nothing extra.
Best for travelers with carry-on bags Southwest. A free carry-on on every fare, including the cheapest, is the strongest structural advantage either airline holds.
Best for checked luggage It depends. Compare Southwest's published fees against Frontier's quote, and check whether status, a card or a Choice Extra fare already includes bags.
Best for families Usually Southwest, for included carry-ons, complimentary snacks and drinks, fee-free changes and rebooking depth. Frontier wins on light-packing trips with a large fare gap and a bundle bought upfront.
Best for short weekend trips Frontier, if you can pack small. Two nights fits in a personal item, and the comfort gap barely registers.
Best for longer domestic flights Southwest. Wi-Fi, entertainment and a more forgiving seat matter more as flight time grows.
Best for travelers with uncertain plans Southwest, with a caveat: choose Choice or higher. Basic still requires a fare upgrade to change, and its credit expires in six months.
Best for travelers who value cabin amenities Southwest. Frontier's connectivity is an announced 2027 plan, not something you can use today.
Southwest vs. Frontier Airlines: Final Verdict
The honest verdict on southwest vs frontier airlines is that neither is always cheaper, and any article claiming otherwise is selling something.
Frontier delivers real value to travelers who pack into a personal item, skip seat selection, accept the cabin as it is and have firm plans. For that traveler it's frequently the least expensive way to cross the country.
Southwest delivers better value when its included benefits match what you need — a carry-on on every fare, complimentary drinks and snacks, no change or cancel fees, Wi-Fi on equipped aircraft, and a deeper schedule when something goes wrong.
The decision comes down to total cost, route, baggage, seats and flexibility, not which airline shows the lower first-page number.
Before choosing an airline, compare the complete itinerary rather than the first fare displayed. Review baggage, seat options, schedule and fare conditions alongside the ticket price. Camli can help travelers explore available flight options and compare the details that influence the real cost of a trip.