Despite requests for confidentiality, US regulators will publish operating data for Virgin America, Republic Airlines and Shuttle America.
The US Bureau of Transportation Statistics (BTS) will make the "Form 41" filings public on 3 February.
Startup Virgin America appealed a June BTS decision to publish its calendar year 2007 traffic, financial and origin and destination data, arguing competitors would gain valuable information about its costs and expenses.
American Airlines and JetBlue Airways objected to Virgin America's claims, with the low-cost carrier noting BTS has denied other requests for secrecy.
BTS published ExpressJet traffic data in December 2007 despite objections from the Houston-based regional that publishing information about its emerging branded operations would be harmful to the company.