Detroit (DTW) to Phoenix (PHX): 1,667 miles (2,683 km) great-circle, about 3h 50m nonstop by our estimate. Cheapest fare observed: $174 round-trip on Frontier, nonstop, departing May 10, 2026.
$174 round-trip, Frontier F94671, departing 2026-05-10 at 19:53, returning 2026-05-15. The recorded itinerary left on a Sunday, returning on a Friday 5 nights later; the fare was observed 15 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $174, it ranked 9th of the 30 round-trip fares we recorded from DTW (median $275). That is 10.4 cents per great-circle mile (round-trip price over one-way distance), below the DTW median of 22.2 cents across 30 round-trip routes.
Routes from DTW of similar length: Las Vegas (1,745 mi) at $129 and Queretaro (1,785 mi) at $494.
Frontier had the cheapest fare on 17 of 30 DTW routes. It is the 14th longest of the 30 routes we track from DTW.
Of 12 departure airports with a fare to Phoenix, Detroit (DTW) ranked 5th at $174. 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 Detroit (DTT), was $181 round-trip on Frontier, nonstop, departing June 1, 2026. Phoenix to Detroit flights.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Phoenix; flight time is our estimate.