Delta has finally matched some Southwest sale fares out of Denver, most can be booked as one ways. They quite often don't match, and it is unusual to see ATL routings from Denver permitted for destinations in the Great Plains. (I may do DTW myself and pass on the rest). One way fares: * = mileage run worthy, around .05 mile or below DEN/SLC/PHX $81 (cheap segments) DEN/SLC/LAX $91 DEN/ATL/DFW $91 * DEN/SLC/OMA $94 DEN/SLC/DTW $98 * DEN/ATL/OKC $101* DEN/ATL/MCI $108 * DEN/SLC/AUS $110 DEN/SLC/SEA $110 Update: Oct 11 - Most of these have been pulled except notably for OKC where Delta is competing with a $49 Frontier sale. Also, there is now a $408 roundtrip special DEN to HNL. Maui and Kona (but not Kauai) are nominally more expensive. Routing through ATL yields more MQMs but requires an overnight in Atlanta in many cases. DEN/MSP/SEA/HNL seems to yield the best cpm.