United Airlines rebooked 14,000 Spirit Airlines passengers in the 12 hours after the discount carrier ceased flying early Saturday, the first concrete count of how quickly rivals are absorbing the stranded customers of the country's collapsed budget operator. American, Delta, Frontier, JetBlue, Allegiant and Southwest are also capping fares or offering reduced tickets on routes Spirit once flew, but the windows are short — Southwest's discount, available only at airport ticket counters, closes Wednesday — and Transportation Secretary Sean Duffy used the weekend to make clear that no further federal rescue is coming.

The scramble shifts the cost of Saturday's shutdown onto 17,000 former Spirit workers and travelers who relied on the carrier's rock-bottom fares. Spirit flew about 1 in 33 domestic miles in the 12 months ending in February, according to Bureau of Transportation Statistics data cited by Axios, and consumer advocates expect the loss of that capacity to push prices higher on routes Spirit used to serve once the temporary discounts lapse.

Refund mechanics

Spirit said it will automatically process refunds for any flight booked on a credit or debit card directly with the airline. Duffy confirmed Saturday that the carrier has set aside a reserve fund and that the money will go back to the original form of payment. Travelers who booked through online travel agencies must seek refunds from those agents.

Customers who paid with vouchers, credits or loyalty points are in a different line. Those claims will move through Spirit's bankruptcy process, which the National Consumers League warned could yield only a partial recovery. The Department of Transportation is directing affected passengers to file Fair Credit Billing Act chargebacks with their card issuers and to check whether travel insurance covers "insolvency" or "service cessation."

"Not all Spirit customers should assume a refund will automatically appear," said John Breyault, the league's vice president of public policy, telecommunications and fraud. "When an airline shuts down this suddenly, it's up to travelers to take proactive steps to have the best chance of getting their money back."

What rivals are offering

The rebooking offers vary. United is allowing capped-fare bookings online for two weeks. Southwest's offer requires an in-person visit to an airport ticket counter and expires Wednesday, May 6, according to industry trade group Airlines for America. American, Allegiant, Frontier and Delta are advertising reduced fares on routes that overlapped with Spirit and have published route maps to help displaced passengers find a comparable flight.

American, which serves 70 of the 72 airports Spirit flew from, said it is "reviewing opportunities to add additional capacity," including larger aircraft and added flights on popular routes. United said it is weighing additional flights on overlapping routes. Southwest will honor Spirit's Silver and Gold loyalty tiers with matched A-List status. Hertz is advertising one-way rentals at up to 25 percent off.

American and United said they will hold preferential interviews and recruiting events for Spirit pilots, flight attendants and ground staff. Spirit ended 2025 with about 7,500 employees, including 2,000 pilots and 3,000 flight attendants, according to its annual report.

No second rescue

Duffy framed the discount offers as the answer to further federal help. "This is the airline industry stepping up and trying to provide relief as Spirit is going to go through this liquidation," he said Saturday. He attributed the collapse to Spirit's business model rather than the Iran war that doubled jet fuel costs this spring, telling reporters "Spirit was in dire straits long before the war with Iran" and that the airline's low-cost approach "wasn't working."

Consumer advocates counter that fault matters less than the bill travelers will eventually pay. "You do not have to fly a small carrier in order to benefit from its presence, because they will bring down the big guys' fares," William McGee, a senior fellow at the American Economic Liberties Project, told NPR. Without Spirit, he predicted, "everyone will be paying more."

The next test comes Wednesday, when Southwest's window closes and rivals decide whether to extend their capped fares or let them lapse.