@lizaliu
Does Spirit Airlines allow pets in their cabin? Yes, but advance booking is required due to limited space. Always check Spirit’s official pet policy before flying to ensure compliance with the latest rules. Spirit Airlines allows pets in their cabin, but with specific guidelines. Only small dogs and cats are permitted, with a maximum weight of 40 lbs (including the carrier). The pet fee is $125 each way, and pets must remain inside an approved carrier (18x14x9 inches) under the seat. Emotional support animals are no longer classified as service animals, so standard pet policies apply.