https://thepointsguy.com/news/this-ultra-low-cost-carrier-has-new-routes-to-the-us/
This Ultra-Low-Cost Carrier Has New Routes to the US - The Points Guy
Aug 3, 2018 - Swoop airlines is now...swooping into five US airports from Canada.
ultra low cost carrier
https://www.transportation.gov/briefing-room/promote-competition-usdot-proposes-new-opportunity-low-or-ultra-low-cost-carrier
To Promote Competition, USDOT Proposes New Opportunity for Low- or Ultra-Low Cost Carrier to Serve...
Washington - Today, the U.S.