These Are The 5 Best Low-Cost U.S. Airlines Now That Spirit Airlines Has Shut Down

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The post-Spirit period of American aviation has formally begun. On May 2, 2026, after 34 years of shaking up the business, Spirit Airlines closed its doorways for good. The yellow planes are grounded, leaving an enormous void within the funds journey market.

Specifically, over 1.6 million home seats have simply vanished in a single day.

For these of us who relied on these “bare fares” to get round, the panorama has shifted. The “Spirit Effect”—the place legacy carriers have been compelled to decrease costs to compete—is fading, and fares are already ticking upward in main hubs like Fort Lauderdale and Las Vegas.

But do not panic simply but. While the pioneer of the ultra-low-cost mannequin is gone, a number of different carriers have stepped up with upgraded cabins, new loyalty perks, and a significantly better reliability file.

Here are the perfect low-cost airways to e book in 2026.

1. Frontier Airlines: The New ULCC Leader

(*5*)

With Spirit out of the image, Frontier has formally claimed the throne as the first funds provider within the U.S. However, they don’t seem to be the Frontier you keep in mind. In 2026, the airline pivoted to “Clear, Upfront Pricing,” shifting away from the nickel-and-diming fame of the previous.

• The “First Seats” Upgrade: Frontier is presently rolling out 2×2 “First Seats” within the entrance of their planes to compete with Spirit’s well-known Big Front Seat.
• The Business Bundle: This is the true game-changer for 2026. Their new Business Bundle consists of two 50-lb checked baggage, precedence boarding, and an “UpFront Plus” seat with a assured empty center seat.
• Insider Tip: If you’re a frequent flyer, the GoWild! Pass continues to be the perfect worth within the sky for versatile vacationers, providing limitless flights for a flat annual charge (presently trending round $1,999).

2. Breeze Airways: The Premium Disrupter

Founded by David Neeleman (the man who began JetBlue), Breeze is the fastest-growing airline of 2026 for a cause. They concentrate on “long, thin” routes—connecting secondary cities like Louisville and Hartford on to the West Coast with out a layover.

• The 220 Experience: Breeze flies the Airbus A220, which options the “Breeze Ascent” product. It’s primarily a first-class seat with large recline and free snacks at a fraction of the price of a legacy provider.
• Breezy Rewards: The 2026 loyalty overhaul launched the “Buddy Discount.” High-tier “Breezy Club” members now get a multi-use 100% low cost for a companion, making it a favourite for {couples} and households.
• The Tech Perk: Unlike the funds carriers of previous, Breeze gives high-speed WiFi that truly works, and it is free for all elite reward members.

3. Southwest Airlines: The Modern Pivot

Southwest underwent its greatest identification shift in 55 years this January. They formally ended the “open seating” period, shifting to assigned seating to higher compete with the massive guys.

• The Bag Fee Era: This is the half that hurts: Southwest now not flies all baggage totally free. As of April 9, 2026, vacationers on “Basic Bag” fares are charged $45 for the primary checked bag.
• The Loophole: If you maintain a Rapid Rewards bank card, you continue to get your first bag free for your self and as much as eight companions. This has develop into the important “safety net” for Southwest followers this yr.
• Why Still Book? They nonetheless have the perfect change-fee-free coverage within the enterprise. If your plans are 50/50, Southwest is the one low-cost provider that will not penalize you for a last-minute swap.

4. Avelo Airlines: The Secondary Hub King

Avelo has discovered its area of interest by dominating airports that everybody else ignored. By flying out of locations like New Haven (HVN) and the newly opened base at McKinney National (TKI) in North Texas, they prevent the two-hour trek to a serious worldwide hub.

• Status Match: In a savvy transfer following Spirit’s shutdown, Avelo is presently providing a standing match for former Spirit Saver$ Club members. If you had the yellow card, you may get 12 months of Avelo PLUS totally free.
• The “TRYAVELO” Code: Use promo code TRYAVELO by way of November 2026 for an enormous low cost in your first base fare as a part of their marketing campaign to win over stranded Spirit flyers.

5. The New “Super-Leisure” Carrier: Allegiant & Sun Country

As of May 13, 2026, Allegiant and Sun Country have formally merged. While they’re nonetheless flying beneath separate manufacturers for now, they’ve built-in their rescue fares and loyalty applications.

• The Benefit: By combining Sun Country’s cargo and constitution energy with Allegiant’s large trip community, the “new” airline is extra resilient towards gas value spikes. You can now earn factors on an Allegiant flight to Vegas and spend them on a Sun Country flight to the Caribbean.

2026 Reality Check: Fare Volatility

The exit of Spirit has eliminated the first supply of downward strain on U.S. airfares. Aviation analysts are seeing a 15% to twenty% spike in costs on routes the place Spirit was the one competitors.

Pro-Tip for 2026: Fuel costs are presently sitting at file highs ($4.51 per gallon). This means “rescue fares” (often capped at $99–$299) are your finest buddy in case you have been caught within the liquidation. If you’re reserving contemporary, e book not less than 21 days out—the “last-minute budget deal” is successfully useless in the meanwhile.