Route Price Intelligence
Cheap Flights From St. Louis to Las Vegas
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Vegas from STL usually runs near $354 round trip, now down to just $128 on nonstop Frontier, a 64% discount. That's one of the strongest fares we've tracked on this route, and with the Strip's shows, dining, and easy desert day trips, it's simple to build a fall weekend around.
✓ 5 date combinations found at this price
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Best Time to Fly from St. Louis to Las Vegas
The cheapest time to fly from St. Louis to Las Vegas is typically August, when fares average around $254. The most expensive month tends to be April at around $469. For the best deals, consider flying in August, October, September.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route