Southwest vs Spirit 2026

Update (May 2026): Spirit Airlines ceased all operations on May 2, 2026 and is now in Chapter 7 liquidation. It no longer sells tickets or operates flights, so Spirit is no longer a bookable option. This comparison is kept for reference and for travelers weighing alternatives. With Spirit out of the market, Southwest is the default choice on these routes; budget-focused flyers can also consider Frontier or Allegiant.

The first thing that tells you everything you need to know about this comparison is what happens when you want a drink mid-flight. On Southwest, a flight attendant brings you a Coke or a coffee at no charge. On Spirit, you used to be handed a menu where every beverage cost money. So did the carry-on you brought. So did the seat you picked. And in the end, so did the airline itself: Spirit ran out of money and stopped flying.

I have flown both airlines across a dozen domestic routes. Spirit was often the cheapest line item on the search results page, and on a personal-item-only trip it could genuinely save money. But this is 2026, and the comparison is not the one it was two years ago, because Spirit is no longer in the market at all.

Southwest ended its bags-fly-free era for checked bags in May 2025. Spirit filed for bankruptcy a second time on August 29, 2025, then ceased all operations at 2:30 a.m. ET on May 2, 2026 and converted to a Chapter 7 liquidation. A sustained jet-fuel price spike tied to the Iran conflict pushed fuel to roughly double what Spirit’s restructuring plan assumed and exhausted its liquidity, taking more than 500 daily flights and about 17,000 jobs with it. Southwest, meanwhile, now charges $45 for a first checked bag, which removed the most obvious cost advantage it held for two decades but left it standing as the only flyable carrier of the two.

Short version: Southwest is the default choice for budget travelers in 2026 because Spirit no longer sells tickets or operates flights. Where Spirit’s lower base fare once mattered for ultra-light packers, those travelers now book Southwest, or look to Frontier or Allegiant for a comparable ultra-low-cost fare.

What We Looked For

• Carry-on and checked bag policies, the single most important factor in whether Spirit’s lower base fare translates to actual savings
• Total trip cost after fees, because base-fare comparisons alone mislead on both airlines
• Financial stability, because Spirit’s second bankruptcy ended in a Chapter 7 liquidation and the airline no longer operates, which is the most fundamental difference of all
• Seat pitch and comfort, where the gap between 31 and 28 inches (79 and 71 cm) matters on any flight over two hours
• Reliability, both on-time performance and the ability to recover from disruptions
• Loyalty programs, where the Companion Pass makes Rapid Rewards one of the most valuable domestic programs available

Which airline charges less for bags, Southwest or Spirit?

Southwest includes a free carry-on on every fare. Spirit charged $37 to $65 per direction depending on when you paid. For any traveler who packs a standard carry-on, Southwest came out either cheaper or comparable once all fees were counted, and it is now the only one of the two still selling tickets.

This was the most important finding in the comparison, and the one that changed the math for the majority of travelers, which is why Southwest carried it over once Spirit shut down.

Southwest includes one carry-on (up to 24x16x10 inches / 61x41x25 cm) and one personal item free on all fare classes, including its cheapest Basic fare. Spirit included only a personal item (18x14x8 inches / 46x35x20 cm) on its Value fare. A carry-on on Spirit cost 37 dollars at booking, 47 dollars at online check-in, and up to 65 dollars at the gate. On a round trip, that was a minimum of $74 if you remembered to add it at booking and potentially $130 if you arrived at the gate unprepared.

Southwest now charges $45 for the first checked bag and $55 for the second on standard fares. Spirit used fully dynamic checked bag pricing: 25 to 35 dollars at booking, 45 dollars at check-in, up to 65 dollars at the gate. Spirit was cheaper for checked bags if you added them at booking. Southwest’s $45 flat rate has the advantage of being predictable.

Total cost example (for reference). When Spirit was still operating, a Las Vegas to Chicago round trip looked like this. Spirit Value: roughly $89 each way, personal item only ($178 total). Southwest Basic with free carry-on: roughly $109 each way ($218 total). Spirit saved $40 on the round trip if you packed ultra-light. Add a carry-on to Spirit at booking, $37 each way: Spirit total jumped to $252. Southwest total stayed at $218. Southwest came out cheaper by $34, and you also got free Wi-Fi and a free drink. With Spirit now shut down, this comparison no longer has a Spirit side to book; Southwest’s $218 round trip stands on its own.

For the dimensions on your specific bag, see the Southwest carry-on size guide.

Winner: carry-on inclusion

Southwest / free vs $37-65

Winner: checked bag predictability

Southwest / $45 flat vs Spirit's dynamic $25-65

Winner: personal-item-only base fare

Southwest / Spirit's low fare gone; Frontier/Allegiant closest now

Winner: total round-trip cost with carry-on

Southwest

Is Southwest or Spirit more reliable for on-time arrivals?

Southwest posted 77.04 percent on-time in 2025 with a 0.85 percent cancellation rate. Spirit posted a higher 78.83 percent on-time but a 1.50 percent cancellation rate. Spirit edged Southwest on punctuality, while Southwest cancelled far fewer flights.

On-time performance: Southwest finished first in the Wall Street Journal’s 2025 overall airline rankings, which weigh cancellations and complaints alongside punctuality. On Cirium’s pure on-time list, though, Spirit placed third among the ten largest North American carriers at 78.83 percent, just ahead of Southwest’s 77.04 percent, a surprising result for a ULCC that was already in bankruptcy at the time. The on-time gap between the two is small and is not the primary differentiator here.

The cancellation gap matters more. Southwest canceled 0.85 percent of flights in 2025. Spirit canceled 1.50 percent (US DOT full-year 2025). On a 100-flight schedule, Southwest averages fewer than one cancellation. Spirit averages more than one. On a round trip, the compounding effect is noticeable.

Recovery matters as much as initial performance. Southwest operates 800-plus aircraft across approximately 117 airports. When a Southwest flight cancels, another Southwest flight on the same route typically departs within hours. Spirit ran a smaller fleet from fewer bases, so a Spirit cancellation often meant waiting until tomorrow or rebooking onto another airline at full price. That comparison is academic now, because Spirit no longer operates any flights.

And beyond operational reliability is financial reliability. Spirit’s case is the extreme end of that scale: it ceased all operations on May 2, 2026 and entered Chapter 7 liquidation, which is a different kind of unreliable than a delayed departure. Southwest is the only one of the two still flying.

Winner: on-time arrivals

Spirit / 78.83% vs Southwest's 77.04% (Cirium 2025)

Winner: cancellation rate

Southwest / 0.85% vs 1.50% (US DOT 2025)

Winner: disruption recovery

Southwest / larger network, more frequencies

Winner: still operating

Southwest / Spirit ceased all flights May 2, 2026 (Chapter 7)

Does Southwest or Spirit have more legroom?

Southwest’s standard economy seats pitch at 31 inches (79 cm) since the January 27, 2026 assigned seating rollout. Spirit’s standard economy pitched at 28 inches (71 cm). That three-inch gap is noticeable on any flight over two hours.

Southwest rolled out assigned seating on January 27, 2026, reconfiguring its 737-700 and 737 MAX 8 fleet in the process. Standard and Preferred seats pitch at 31 inches (79 cm). Extra Legroom seats on 737-800 and MAX 8 aircraft pitch at 34 inches (86 cm). On older 737-700s, Extra Legroom adds up to five inches over Standard, reaching 36 inches (91 cm). Seat width runs approximately 17.8 to 18 inches (45 to 46 cm).

Spirit’s standard cabin pitched at 28 inches (71 cm). The Go Comfy seats (later folded into the Premium Economy bundle) pitched at 32 inches (81 cm). The Big Front Seat (renamed Spirit First in the 2025 post-bankruptcy product refresh) offered 36 inches (91 cm) in a 2x2 layout at the front of the plane and, after the June 2025 product update, included a carry-on, first checked bag, priority boarding, and complimentary snacks and beverages.

Spirit First was an interesting product in a vacuum. At the right price, 36 inches (91 cm) with a 2x2 layout beat most domestic premium economy cabins. The catch is now decisive: Spirit ceased all operations on May 2, 2026, so Spirit First is no longer bookable on any route. Travelers who valued that low-cost wide seat have to look to a different carrier’s premium economy or extra-legroom product.

Wi-Fi. Southwest made onboard Wi-Fi free in late 2025 and is deploying Starlink starting summer 2026, free for Rapid Rewards members, with 300-plus aircraft by year end. Spirit charged $5.99 to $7.99 per flight, and not all Spirit aircraft had Wi-Fi at all.

Beverages. Southwest includes free non-alcoholic beverages on all flights. Spirit charged for everything, including water and soft drinks. On a two-hour domestic flight, that $3 to $5 per person added up across a family or a work trip.

Winner: standard legroom

Southwest / 31" (79 cm) vs 28" (71 cm)

Winner: extra legroom seats

Southwest / 34-36" (86-91 cm) vs Spirit Go Comfy 32" (81 cm)

Winner: budget premium seating

Southwest / Spirit First gone after May 2, 2026 shutdown

Winner: Wi-Fi

Southwest / free vs paid

Winner: included beverages

Southwest / free vs paid

Does Southwest or Spirit fly to more destinations?

Southwest flies to approximately 117 airports across the US and nearby international markets. Spirit served approximately 70 airports before it ceased operations on May 2, 2026, and now serves none.

Southwest’s domestic network is one of the broadest in the US. It operates point-to-point routes without major hub dependency, meaning more direct options between secondary cities than many legacy carriers. Southwest’s international flying is limited to nearby leisure markets in Mexico, the Caribbean, and Central America.

Spirit had served approximately 70 airports across the US, Caribbean, Mexico, and Central America, and had been cutting routes through its second Chapter 11, dropping service to Milwaukee, St. Louis, Grand Cayman, Managua, and San Salvador. That contraction ended with the May 2, 2026 shutdown, which removed more than 500 daily flights from the schedule.

For domestic travel, Southwest is the only option of the two, with broad coverage and high frequencies. Travelers who relied on Spirit’s old leisure markets (Fort Lauderdale, Orlando, Las Vegas) should check Southwest first, then Frontier or Allegiant where they fly those same routes.

Winner: domestic network depth

Southwest / ~117 airports vs Spirit's now-zero

Winner: route availability

Southwest / Spirit no longer operates any routes

Is Rapid Rewards better than Free Spirit?

Southwest Rapid Rewards is the only usable program of the two. Free Spirit points can no longer be redeemed for flights because Spirit ceased operations on May 2, 2026, and Rapid Rewards is a strong program in its own right, primarily because of the Companion Pass.

Rapid Rewards earns points based on ticket price, not miles flown. Points average 1.3 to 1.5 cents each. The Companion Pass, earned by accumulating 135,000 qualifying points in a calendar year, lets a designated companion fly with you on every paid and award flight for just taxes and fees through the remainder of the earning year plus the full following calendar year. This is the best domestic travel perk any US carrier offers. Status tiers (A-List, A-List Preferred) provide priority boarding, same-day standby, and bonus point earning. Points do not expire with account activity.

Free Spirit earned points at 6x, 8x, or 10x per dollar depending on tier, averaging 1.0 to 1.1 cents each. The program’s defining limitation was always portability: Free Spirit points were redeemable only on Spirit flights, with no airline partner transfers. A $50 redemption fee applied per person for flights booked within 28 days of departure, and Silver status (2,000 Status Qualifying Points) unlocked a free carry-on. With Spirit in Chapter 7 liquidation since May 2, 2026, accumulated Free Spirit points can no longer be redeemed for flights.

For any traveler with Southwest routes available, Rapid Rewards is the program to use. Free Spirit no longer offers a usable redemption path now that the airline has stopped flying.

Winner: program value

Rapid Rewards / Companion Pass, no expiration

Winner: points value

Rapid Rewards / ~1.4 cents vs ~1.1 cents

Winner: redemption flexibility

Rapid Rewards / not limited to one carrier

Winner: points usability

Rapid Rewards / Free Spirit points no longer redeemable

Who Should Pick Southwest

• You fly carry-on and want Southwest’s free carry-on allowance included on every fare
• You travel with a companion and want to earn toward the Rapid Rewards Companion Pass
• You want free Wi-Fi, free beverages, and 31 inches (79 cm) of pitch without add-ons
• You need flexibility: Southwest has no change or cancellation fees and allows changes to travel credits for any reason
• Your destination is one of Southwest’s roughly 117 served airports
• You used to fly Spirit and need a reliable carrier now that Spirit has shut down

What Ex-Spirit Travelers Should Do Now

Spirit ceased all operations on May 2, 2026 and is in Chapter 7 liquidation, so it is no longer a choice on any route. If you packed personal-item-only to chase Spirit’s low base fares, your closest replacements are:

• Southwest on any overlapping route, where the free carry-on and free beverages often net out cheaper than a bare ultra-low-cost fare once fees are added
• Frontier for the closest ultra-low-cost base fares, with the same fee-stacking math Spirit used
• Allegiant for leisure routes to smaller markets, where it often flies nonstop where others connect

If you were holding a Spirit booking or Free Spirit points, refunds and claims run through the bankruptcy process rather than the airline directly.

The Bottom Line

Southwest and Spirit used to be a clean comparison. Southwest had free checked bags. Spirit had lower base fares but charged for everything else. Most casual observers knew to add Spirit’s fees before comparing. That calculus is now moot, because two things changed.

Southwest ended free checked bags for most fares in May 2025, which closed the price gap on bag-heavy travel. And Spirit ran out of road. After a second Chapter 11 filing on August 29, 2025, a sustained jet-fuel price spike tied to the Iran conflict pushed fuel to roughly double what the restructuring plan assumed and exhausted the airline’s liquidity. Spirit ceased all operations at 2:30 a.m. ET on May 2, 2026 and converted to a Chapter 7 liquidation, ending more than 500 daily flights and affecting about 17,000 jobs.

For budget domestic travelers in 2026, that leaves a simple answer: book Southwest. It is the only flyable carrier of the two, and the free carry-on, free Wi-Fi, free beverages, and 31-inch (79 cm) pitch close most of the amenity gap that Spirit’s low base fares used to buy you. If you specifically want an ultra-low-cost base fare, look to Frontier or Allegiant instead. Spirit is no longer an option.

For budget alternatives now that Spirit has shut down, see Southwest vs Frontier and Southwest vs Allegiant. For more comparisons, see United vs Spirit and Southwest vs Delta.