Round trip flights between St Louis and Las Vegas for $197

American, Delta, and Expedia are offering round trip flights between St Louis (STL) and Las Vegas (LAS) for $197. These fares are available on many dates from August through October 2026. The deal covers basic economy seats that include a personal item and carry-on, but lack seat selection and change options. To book, use the specified travel dates and go directly through Expedia, American Airlines, or Delta. This represents a significant discount from the full price of $289, saving $92, or roughly 32% off the original fare. The availability of multiple dates and airlines enhances the deal's appeal, especially for flexible travelers. The deal has been viewed a few hundred times, indicating moderate interest, but the price drop makes it a noteworthy opportunity for budget-conscious travelers planning trips within this timeframe.