Salt Lake City (SLC) to Phoenix (PHX): 508 miles (818 km) great-circle, about 1h 30m nonstop by our estimate. Cheapest fare observed: $205 round-trip on Frontier, with 1 stop, departing April 29, 2026.
$205 round-trip, Frontier F92575, departing 2026-04-29 at 12:59, returning 2026-05-03. The recorded itinerary left on a Wednesday, returning on a Sunday 4 nights later; the fare was observed 4 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $205, it ranked 7th of the 30 round-trip fares we recorded from SLC (median $470). That is 40.3 cents per great-circle mile (round-trip price over one-way distance), above the SLC median of 24.7 cents across 30 round-trip routes.
Routes from SLC of similar length: San Francisco (598 mi) at $164 and Denver (390 mi) at $70.
Frontier had the cheapest fare on 25 of 30 SLC routes. It is the 28th longest of the 30 routes we track from SLC.
Of 12 departure airports with a fare to Phoenix, Salt Lake City (SLC) ranked 6th at $205. Lowest: $48 from Denver (DEN); highest: $409 from San Jose (SJC); 8 nonstop. Cheapest-fare airlines (routes): Frontier (8), Alaska Airlines (1), JetBlue (1), Southwest (1) and Volaris (1).
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Denver, America/Phoenix; flight time is our estimate.