I'm not sure why I'm getting downvoted so heavily for this comment.

Instead of giving two smaller airlines a chance to work together and compete against the "Big Four", denying the JetBlue merger all but guaranteed that Spirit would have to file for bankruptcy.

The company's assets are worth more than the company itself so I wouldn't be surprised if it simply liquidates with the result being no fares (because no Spirit airlines), no seats (because no Spirit airlines), and millions of customers with less of a choice (because no Spirit airlines).