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Flights from St. Louis to Las Vegas

Book direct flights from St. Louis to Las Vegas: One way flights from $100, round trip flights from $165. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        STL 12:36 PM
        3h 41m
        Nonstop
        LAS 2:17 PM
        St. Louis - Las Vegas | Mon, May 18 | Frontier Airlines
        LAS 2:43 PM
        3h 28m
        Nonstop
        STL 8:11 PM
        Las Vegas - St. Louis | Mon, May 25 | Frontier Airlines
        $165 $293
        44% off
        44% off
        $293 $165
      • STL 9:06 PM
        3h 36m
        Nonstop
        LAS 10:42 PM
        St. Louis - Las Vegas | Sat, Jun 6 | Frontier Airlines
        LAS 2:43 PM
        3h 28m
        Nonstop
        STL 8:11 PM
        Las Vegas - St. Louis | Tue, Jun 9 | Frontier Airlines
        $221 $293
        25% off
        25% off
        $293 $221
      • STL 6:30 PM
        3h 40m
        Nonstop
        LAS 8:10 PM
        St. Louis - Las Vegas | Sun, Jun 7 | Frontier Airlines
        LAS 8:59 PM
        20h 24m
        1 stop
        STL 7:23 PM
        Las Vegas - St. Louis | Tue, Jun 9 | Frontier Airlines
        $195 $293
        33% off
        33% off
        $293 $195
      • STL 6:51 PM
        3h 40m
        Nonstop
        LAS 8:31 PM
        St. Louis - Las Vegas | Thu, May 21 | Frontier Airlines
        LAS 8:59 PM
        20h 24m
        1 stop
        STL 7:23 PM
        Las Vegas - St. Louis | Sun, May 24 | Frontier Airlines
        $212
        28% off
        $293 $212
      • STL 8:08 PM
        5h 21m
        1 stop
        LAS 11:29 PM
        St. Louis - Las Vegas | Sat, May 30 | Frontier Airlines
        LAS 8:59 PM
        20h 24m
        1 stop
        STL 7:23 PM
        Las Vegas - St. Louis | Tue, Jun 2 | Frontier Airlines
        $215
        27% off
        $293 $215
      • STL 6:03 PM
        3h 41m
        Nonstop
        LAS 7:44 PM
        St. Louis - Las Vegas | Wed, Jun 10 | Frontier Airlines
        LAS 11:53 PM
        6h 59m
        1 stop
        STL 8:52 AM
        Las Vegas - St. Louis | Sat, Jun 13 | Frontier Airlines
        $220
        25% off
        $293 $220
      • STL 2:56 PM
        3h 35m
        Nonstop
        LAS 4:31 PM
        St. Louis - Las Vegas | Mon, Jun 29 | Frontier Airlines
        LAS 6:30 AM
        10h 53m
        1 stop
        STL 7:23 PM
        Las Vegas - St. Louis | Sun, Jul 5 | Frontier Airlines
        $222
        24% off
        $293 $222
      • STL 7:08 PM
        6h 46m
        1 stop
        LAS 11:54 PM
        St. Louis - Las Vegas | Sun, May 17 | Frontier Airlines
        LAS 12:39 PM
        3h 27m
        Nonstop
        STL 6:06 PM
        Las Vegas - St. Louis | Wed, May 20 | Frontier Airlines
        $223
        24% off
        $293 $223
      • STL 4:19 PM
        30h 28m
        1 stop
        LAS 8:47 PM
        St. Louis - Las Vegas | Thu, May 28 | Frontier Airlines
        LAS 8:59 PM
        20h 24m
        1 stop
        STL 7:23 PM
        Las Vegas - St. Louis | Tue, Jun 2 | Frontier Airlines
        $224
        24% off
        $293 $224
      • STL 7:03 PM
        6h 51m
        1 stop
        LAS 11:54 PM
        St. Louis - Las Vegas | Sat, Jun 13 | Frontier Airlines
        LAS 9:51 PM
        23h 58m
        1 stop
        STL 11:49 PM
        Las Vegas - St. Louis | Wed, Jun 17 | Frontier Airlines
        $240
        18% off
        $293 $240
      • STL 1:00 PM
        17h 25m
        1 stop
        LAS 2:00 PM
        St. Louis - Las Vegas | Mon, May 18 | Normal Airline
        LAS 3:00 PM
        6h
        Nonstop
        STL 4:00 PM
        Las Vegas - St. Louis | Wed, May 20 | Normal Airline
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      • Cheapest nonstop
        STL 7:46 PM
        3h 34m
        Nonstop
        LAS 9:20 PM
        St. Louis - Las Vegas | Thu, Jun 25 | Frontier Airlines
        $100 $154
        35% off
        35% off
        $154 $100
      • STL 6:51 PM
        3h 40m
        Nonstop
        LAS 8:31 PM
        St. Louis - Las Vegas | Thu, Jun 4 | Frontier Airlines
        $118 $154
        23% off
        23% off
        $154 $118
      • STL 7:46 PM
        3h 34m
        Nonstop
        LAS 9:20 PM
        St. Louis - Las Vegas | Wed, Jun 24 | Frontier Airlines
        $124 $154
        19% off
        19% off
        $154 $124
      • STL 2:56 PM
        3h 35m
        Nonstop
        LAS 4:31 PM
        St. Louis - Las Vegas | Mon, Jun 15 | Frontier Airlines
        $126
        18% off
        $154 $126
      • STL 4:19 PM
        30h 28m
        1 stop
        LAS 8:47 PM
        St. Louis - Las Vegas | Thu, May 28 | Frontier Airlines
        $103
        33% off
        $154 $103
      • STL 6:59 PM
        7h 29m
        1 stop
        LAS 12:28 AM
        St. Louis - Las Vegas | Sun, May 17 | Delta Air Lines
        $109
        28% off
        $154 $109
      • STL 5:30 PM
        7h 20m
        1 stop
        LAS 10:50 PM
        St. Louis - Las Vegas | Sun, May 24 | Delta Air Lines
        $111
        28% off
        $154 $111
      • STL 6:30 AM
        8h 13m
        1 stop
        LAS 12:43 PM
        St. Louis - Las Vegas | Mon, May 25 | Delta Air Lines
        $115
        25% off
        $154 $115
      • STL 6:59 PM
        7h 29m
        1 stop
        LAS 12:28 AM
        St. Louis - Las Vegas | Thu, May 21 | Delta Air Lines
        $115
        25% off
        $154 $115
      • STL 8:08 PM
        13h 2m
        1 stop
        LAS 7:10 AM
        St. Louis - Las Vegas | Fri, May 29 | Frontier Airlines
        $120
        22% off
        $154 $120
      • STL 1:00 PM
        17h 25m
        1 stop
        LAS 2:00 PM
        St. Louis - Las Vegas | Mon, May 18 | Normal Airline
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Displayed flight fares from St. Louis to Las Vegas are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Frequently Asked Questions

  • What are the cheapest flights from St. Louis to Las Vegas (STL-LAS)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $100 on Cheapest nonstop routes (e.g. STL to LAS on Thu, Jun 25), while Frontier Airlines offers Cheapest nonstop round-trips from $165 departing on Mon, May 18 and returning on Mon, May 25.
  • At the moment, you can catch a nonstop flight from St. Louis to Las Vegas with the following airlines, including: Frontier Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 4 hours 12 minutes to fly from St. Louis (STL) to Las Vegas (LAS).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to Las Vegas is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from St. Louis to Las Vegas, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jun 25, with one-way flights priced at just $100.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Las Vegas travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from St. Louis to Las Vegas is October, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from St. Louis to Las Vegas on May 29, 2026 with Frontier Airlines, with prices starting at $171.
  • You can land at any one of the following hubs in Las Vegas, with St. Louis Lambert International Airport to Harry Reid International Airport (STL-LAS) is by far the most common option on this route: Harry Reid International Airport (LAS) Boulder City Municipal Airport (BLD) Henderson Executive Airport (HSH) Nellis Air Force Base (LSV).
  • The time difference between Las Vegas and St. Louis is 2h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

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Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.