Flights San Francisco → Phoenix — September 18, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Friday, September 18, 2026 on the San Francisco–Phoenix route: 1 stop itinerary (2 flights) via San Diego International (SAN), from San Francisco International (SFO) to Phoenix Sky Harbor (PHX), first flight Frontier Airlines F93382, departs 4:31 PM, arrives 8:34 PM, total travel time 4h 3m including layovers, flight time 3h 18m (layovers excluded), $145 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 8, 2026 and read by AirSource on September 10, 2026, 21:21 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: Frontier Airlines F92638, from San Francisco International (SFO) to Phoenix Sky Harbor (PHX), departs 1:10 PM, arrives 3:23 PM, direct, 2h 13m, $156 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable.