As others have mentioned this won’t end up a big deal for Spirit. A year from now and a few 9 dollar ticket sales and all will be forgiven. Where it may have a impact on low cost airlines is new rules that come out of this. They may be required under law to rebook passengers on other airlines and provide hotels. This would be a significant cost item for airlines that don’t already do this as a matter of policy and because it’s the right thing to do.