Frontier has round-trip flights from Dallas (DFW) to Phoenix, Los Angeles, Detroit, Minneapolis, St. Louis (PHX, LAX, DTW, MSP, STL) for $68-$97, NONSTOP. Most flights in September. Detroit flights August to November. Minneapolis flights August to October. Note the instructions to get this to work right.

Free Checked Bag Coupon: Use code “FREEBAG”. *Buy by 8/21/25. Fly between 9/5/25 – 1/5/2026. Limit one free Checked Bag per person, per direction, weight limit applies.
When booking, Select “Basic Fare”, Don’t purchase any add-ons, Don’t select any bundle, Avoid seat fee by accepting the random seat, Don’t pay for a carry-on. Use Frontier’s Mobile app to avoid airport agent fees. Then under “Checked Bags” select “1x 40lb Checked Bag – $0” (see image)
Before you enter in your credit card information: Double check that is says “$0.00 Checked Bag” for both you departing and return flights (see image). If it says “You have not purchased bags. Add now!” then click it to add bags, and RE-ENTER the “FREEBAG” coupon code on the same page that you enter in your payment details.

Read More Nonstop Flights: Dallas to Phoenix, Los Angeles, Detroit, Minneapolis, St. Louis $68-$97 r/t [September] (Free Checked Bag – Use Code “FREEBAG”) – Frontier