STL to LAS from $197 in economy – flightdeals.net

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American Airlines

AAAmerican Airlines

Delta Air Lines

DLDelta Air Lines

Round Trip•Economy

Lambert-Saint Louis International Airport

St. Louis, United States

Harry Reid International Airport

Las Vegas, United States

$450 USD

-56%$197 USD

Verified about 10 hours ago

December 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

30$611 1$387 2$401 3$401 4$479 5$440 6$547 7$401 8$401 9$409 10$401 11$448 12$440 13$597 14$440 15$401 16$433 17$401 18$480 19$609 20$838 21$470 22$401 23$409 24$401 25$448 26$781 27$823 28$500 29$565 30$579 31$401 1$440 2$440 3$507

Extremely Rare Availability

3% of dates checked are available within 10% of the lowest price

Sunday, December 6th, 2026

1 round-trip options

Returning

Sun, Dec 20, 2026•14 Day Trip

$547 USD