About Boutique Air
Boutique Air is a regional United States airline headquartered in San Francisco, CA. The carrier operates under the IATA designator 4B and the ICAO designator BTQ; air-traffic controllers address its flight crews on the radio with the callsign "BOUTIQUE". The airline was founded in 2007 and currently operates a fleet of approximately 39 aircraft.
Within the US air-travel ecosystem, Boutique Air sits in the "Regional" segment. Regional carriers operate the smaller jets and turboprops that feed traffic into the major hubs. Most of their flights are operated under the brand of a major partner, but the safety oversight, crews, and aircraft remain the regional carrier's responsibility.
Codes & identifiers
| Legal / brand name | Boutique Air |
|---|---|
| IATA code | 4B |
| ICAO code | BTQ |
| Radio callsign | BOUTIQUE |
| Category | Regional |
| Headquarters | San Francisco, CA |
| Year founded | 2007 |
| Fleet size | 39 aircraft |
| Official website | www.boutiqueair.com |
Hub & focus airports
The airports below are listed as hubs or focus cities for Boutique Air. From these airports the carrier operates the densest schedule of nonstop departures, holds the most gate space, and typically supports the broadest range of international or long-haul service.
| Airport | City | State | IATA | Class |
|---|---|---|---|---|
| Dallas Fort Worth International Airport | Dallas-Fort Worth | TX | DFW |
Large hub |
| Denver International Airport | Denver | CO | DEN |
Large hub |
| Los Angeles International Airport | Los Angeles | CA | LAX |
Large hub |
| Phoenix Sky Harbor International Airport | Phoenix | AZ | PHX |
Large hub |
Booking & service notes
Schedules, fares, and aircraft assignments for Boutique Air change frequently, sometimes weekly. The data on this page is intended as a stable reference for codes, headquarters, fleet scale, and hub list; for live availability, fare class rules, baggage policies, and seat selection, always consult the carrier's own booking system at www.boutiqueair.com. When a flight is operated under Boutique Air's code but flown by a regional partner, the operating carrier is normally disclosed on the booking page; this distinction matters for elite-status benefits and, in rare cases, for irregular-operations rebooking.