Sierra Pacific Airlines

airline based in Tucson, Arizona

Sierra Pacific Airlines, operating under IATA code SI and ICAO code SPA with the call sign SIERRA PACIFIC, is an airline based in Tucson, Arizona. Founded in 1972, the carrier has its primary base at Tucson International Airport (TUS).

IATA code: SI
ICAO code: SPA
Callsign: SIERRA PACIFIC
Country: United States
Founded: 1972
Headquarters: Tucson

Hubs

TUS Tucson International Airport · Tucson

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Data sources: Wikidata, OpenFlights · last confirmed: 2026-10-18 · description written automatically from this data