This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $459 fare is the cheapest current round-trip from Detroit (DTW) to TUS on Southwest flight WN1778, departing 2026-07-29 at 06:00 with return on 2026-08-05.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.