American Airlines has Las Vegas to Dallas at $147 round trip with nonstop flights. Dallas to Las Vegas is also at this $147 fare. Flights at this rate are available on select Mondays to Wednesdays and Saturdays from late August through November. This looks to be a challenge to Spirit Airlines $147 fares, where Spirit has far more dates with $147 fare availability.
Filter your search for American Airlines or OneWorld on Google Flights to see the low fare dates without the distraction of Spirit Airlines $147 dates.
American Airlines Las Vegas LAS – Dallas DFW
$146.20 Tuesday October 6 – Tuesday, October 13
You can even buy a one-way American Airlines ticket for $74 and combine with a Spirit or Southwest ticket one way for more date flexibility.