Frontier Airlines offers 1-way fares with prices starting at $43.99, as seen on Travelzoo. That's the third-lowest base rate we've seen from Frontier in the past 12 months. It's also a current low by $39. This price is valid on flights departing from Denver, CO, (DEN) to Dallas, TX, (DFW) on May 7; prices vary depending on the travel cities and dates chosen. Blackout dates may apply. Book this travel deal by April 29 for travel April 29 through September 16.
Of note, although it states rates from $99, we found fares from $43.99 via the date above.
Fare: One-way Fares