Chicago (ORD) to Phoenix (PHX): 1,437 miles (2,313 km) great-circle, about 3h 20m nonstop by our estimate. Cheapest fare observed: $230 round-trip on Frontier, nonstop, departing April 26, 2026.
$230 round-trip, Frontier F91829, departing 2026-04-26 at 07:50, returning 2026-04-29. The recorded itinerary left on a Sunday, returning on a Wednesday 3 nights later; the fare was observed 1 day before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $230, it ranked 16th of the 30 round-trip fares we recorded from ORD (median $221). That is 16.0 cents per great-circle mile (round-trip price over one-way distance), close to the ORD median of 16.6 cents across 30 round-trip routes.
Routes from ORD of similar length: Las Vegas (1,511 mi) at $193 and Miami (1,199 mi) at $123.
Frontier had the cheapest fare on 9 of 30 ORD routes. It is the 20th longest of the 30 routes we track from ORD.
Of 12 departure airports with a fare to Phoenix, Chicago (ORD) ranked 8th at $230. 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).
The reverse, Phoenix (PHX) to Chicago (CHI), was $202 round-trip on Allegiant Air, nonstop, departing May 22, 2026. Phoenix to Chicago flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, America/Phoenix; flight time is our estimate.