Spirit Airlines has halted operations at multiple locations, including Atlantic City International Airport, due to a proposed $500 million bailout failure from the Trump administration.
The airline has advised customers not to proceed to the airport and will automatically refund tickets bought directly from the airline using a credit or debit card.
Passengers who made reservations through a travel agency must seek a refund from that agency.
However, the likelihood of receiving compensation for reservations made with loyalty points is extremely low, according to travel consulting firm Atmosphere Research Group.
Credit card holders might have the option to initiate a chargeback if the refund from Spirit is unsuccessful.
The shutdown is expected to affect approximately 17,000 jobs and follows the airline's second bankruptcy within a year.