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Spirit Airlines built its reputation around one of the industry's most recognizable value propositions: offering some of the lowest fares available to travelers. The experience came with tradeoffs. Passengers often navigated strict baggage policies, à la carte pricing, and fewer included amenities in exchange for lower upfront ticket costs. For many travelers, that approach made Spirit a notable player in the budget-airfare market.

Airfares have risen across much of the market, leading some travelers to wonder whether the era of ultra-low-cost flying has faded as well. While the steepest discounts may be less common than they once were, several airlines continue to operate with similar low-cost models.

Some focus on popular leisure destinations, while others connect smaller cities that larger airlines often overlook. A few have also sought to balance low fares with a somewhat more comfortable onboard experience.

The result is a budget-travel landscape that looks different but still offers opportunities for travelers focused on value. The lowest advertised fares frequently exclude checked bags, seat assignments, and other services that many passengers may expect. Travelers $TRV -0.65% who pack light and remain flexible can still find prices that compare favorably with past budget-airline deals. Those seeking a more traditional airline experience may find costs rise as additional services are added.