Phoenix (PHX) to San Francisco (SFO): 650 miles (1,047 km) great-circle, about 1h 50m nonstop by our estimate. Cheapest fare observed: $254 round-trip on Southwest, nonstop, departing June 30, 2026.
$254 round-trip, Southwest WN4101, departing 2026-06-30 at 21:30, returning 2026-07-05. The recorded itinerary left on a Tuesday, returning on a Sunday 5 nights later; the fare was observed 66 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $254, it ranked 18th of the 30 round-trip fares we recorded from PHX (median $231). That is 39.1 cents per great-circle mile (round-trip price over one-way distance), above the PHX median of 17.4 cents across 30 round-trip routes.
Routes from PHX of similar length: Sacramento (635 mi) at $212 and Denver (601 mi) at $49.
Southwest had the cheapest fare on 2 of 30 PHX routes. It is the 25th longest of the 30 routes we track from PHX.
Of 19 departure airports with a fare to San Francisco, Phoenix (PHX) ranked 9th at $254. Lowest: $126 from Los Angeles (LAX); highest: $483 from New York (JFK); 6 nonstop. Cheapest-fare airlines (routes): Frontier (13), Southwest (3), American Airlines (1), United Airlines (1) and WestJet (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Phoenix, America/Los_Angeles; flight time is our estimate.