Boutique AirBTQ/ 4B

Boutique Air was a regional airline that operated as a U.S. carrier providing essential air service to smaller communities across the United States. Founded in 2011 and headquartered in Denver, Colorado, the airline specialized in regional passenger operations connecting underserved markets to larger hub airports, often operating under contracts with the U.S. Department of Transportation's Essential Air Service program. The airline offered point-to-point regional service with a focus on convenience and personalized service, operating primarily single-aisle turboprop aircraft on shorter routes. Boutique Air ceased operations in 2020, having provided connectivity to remote and smaller U.S. cities that might otherwise have limited commercial air access.