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Flights from Las Vegas to St. Louis

Hi, I've summed up all the key info for Las Vegas to St. Louis flights

Cheapest one-way

$ 74
Frontier Airlines Fri, Sep 18

70% below next 30d avg. ($245)

Cheapest round-trip

$ 122
Frontier Airlines Tue, Sep 29

64% below next 30d avg. ($335)

When to travel

October Cheapest month
July Peak month

Fastest flight

3h 16m 14m faster than avg. (3h 30m)

Recommended airlines

With a lowest one-way fare of $74 , travelers can expect an average price of $245 for upcoming trips, while round-trip tickets start at $122 . Flights typically take around 3h 30m , but the fastest nonstop option completes the journey in just 3h 16m minutes. There are 38 flights weekly on this route. You can arrive at any of the following airports in St. Louis: St. Louis Lambert International Airport (STL) , and St. Louis Downtown Airport (CPS) . Flights from Harry Reid International Airport to St. Louis Lambert International Airport (LAS-STL) are by far the most popular option for this route. To secure the best rates, booking 40 days in advance is recommended, and the cheapest travel days are Tuesday, Wednesday, and Saturday .

Updated 2d ago · This content is an AI-powered summary based on Trip.com data. Prices and availability are subject to change. Please refer to actual prices, availability, and travel conditions.

Explore the cheapest one-way and round-trip flights from Las Vegas to St. Louis over the next 90 days, with one-way fares from $74 and round-trip from $122. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        LAS 6:15 AM
        3h 17m
        Nonstop
        STL 11:32 AM
        Las Vegas - St. Louis | Tue, Sep 29 | Frontier Airlines
        STL 12:17 PM
        3h 35m
        Nonstop
        LAS 1:52 PM
        St. Louis - Las Vegas | Tue, Oct 6 | Frontier Airlines
        $122 $229
        47% off
        47% off
        $229 $122
      • LAS 6:15 AM
        3h 17m
        Nonstop
        STL 11:32 AM
        Las Vegas - St. Louis | Tue, Sep 22 | Frontier Airlines
        STL 12:17 PM
        3h 35m
        Nonstop
        LAS 1:52 PM
        St. Louis - Las Vegas | Tue, Sep 29 | Frontier Airlines
        $132 $229
        42% off
        42% off
        $229 $132
      • LAS 6:15 AM
        3h 17m
        Nonstop
        STL 11:32 AM
        Las Vegas - St. Louis | Sat, Sep 19 | Frontier Airlines
        STL 12:17 PM
        3h 35m
        Nonstop
        LAS 1:52 PM
        St. Louis - Las Vegas | Mon, Sep 21 | Frontier Airlines
        $139 $229
        39% off
        39% off
        $229 $139
      • LAS 5:18 PM
        3h 21m
        Nonstop
        STL 10:39 PM
        Las Vegas - St. Louis | Wed, Oct 28 | Frontier Airlines
        STL 5:32 PM
        3h 43m
        Nonstop
        LAS 7:15 PM
        St. Louis - Las Vegas | Wed, Nov 4 | Frontier Airlines
        $139
        39% off
        $229 $139
      • LAS 6:15 AM
        3h 17m
        Nonstop
        STL 11:32 AM
        Las Vegas - St. Louis | Wed, Sep 23 | Frontier Airlines
        STL 12:17 PM
        3h 35m
        Nonstop
        LAS 1:52 PM
        St. Louis - Las Vegas | Sat, Sep 26 | Frontier Airlines
        $145
        37% off
        $229 $145
      • LAS 6:15 AM
        3h 16m
        Nonstop
        STL 11:31 AM
        Las Vegas - St. Louis | Thu, Oct 22 | Frontier Airlines
        STL 1:30 PM
        3h 45m
        Nonstop
        LAS 3:15 PM
        St. Louis - Las Vegas | Mon, Oct 26 | Frontier Airlines
        $200
        13% off
        $229 $200
      • LAS 6:15 AM
        3h 16m
        Nonstop
        STL 11:31 AM
        Las Vegas - St. Louis | Thu, Oct 15 | Frontier Airlines
        STL 1:30 PM
        3h 45m
        Nonstop
        LAS 3:15 PM
        St. Louis - Las Vegas | Mon, Oct 19 | Frontier Airlines
        $201
        12% off
        $229 $201
      • LAS 2:07 PM
        7h 52m
        1 stop
        STL 11:59 PM
        Las Vegas - St. Louis | Sat, Oct 10 | Alaska Airlines
        STL 4:42 PM
        9h 17m
        1 stop
        LAS 11:59 PM
        St. Louis - Las Vegas | Sat, Oct 17 | Alaska Airlines
        $158
        31% off
        $229 $158
      • LAS 9:53 PM
        17h 47m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Thu, Oct 8 | Frontier Airlines
        STL 7:02 AM
        8h 23m
        1 stop
        LAS 1:25 PM
        St. Louis - Las Vegas | Tue, Oct 13 | Alaska Airlines
        $200
        13% off
        $229 $200
      • LAS 1:00 PM
        17h 25m
        1 stop
        STL 2:00 PM
        Las Vegas - St. Louis | Sun, Sep 13 | Normal Airline
        STL 3:00 PM
        6h
        Nonstop
        LAS 4:00 PM
        St. Louis - Las Vegas | Tue, Sep 15 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        LAS 6:10 AM
        3h 17m
        Nonstop
        STL 11:27 AM
        Las Vegas - St. Louis | Fri, Sep 18 | Frontier Airlines
        $74 $123
        40% off
        40% off
        $123 $74
      • LAS 7:15 AM
        3h 20m
        Nonstop
        STL 12:35 PM
        Las Vegas - St. Louis | Mon, Oct 12 | Frontier Airlines
        $108 $123
        12% off
        12% off
        $123 $108
      • LAS 6:15 AM
        3h 16m
        Nonstop
        STL 11:31 AM
        Las Vegas - St. Louis | Thu, Oct 22 | Frontier Airlines
        $108 $123
        12% off
        12% off
        $123 $108
      • LAS 10:04 PM
        13h 6m
        1 stop
        STL 1:10 PM
        Las Vegas - St. Louis | Tue, Sep 29 | Frontier Airlines
        $88
        28% off
        $123 $88
      • LAS 7:20 AM
        8h 20m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Wed, Nov 4 | Frontier Airlines
        $92
        25% off
        $123 $92
      • LAS 7:20 AM
        8h 20m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Wed, Oct 14 | Frontier Airlines
        $92
        25% off
        $123 $92
      • LAS 7:20 AM
        8h 20m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Wed, Oct 28 | Frontier Airlines
        $92
        25% off
        $123 $92
      • LAS 7:20 AM
        8h 20m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Wed, Oct 21 | Frontier Airlines
        $92
        25% off
        $123 $92
      • LAS 10:26 AM
        29h 14m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Tue, Nov 3 | Frontier Airlines
        $99
        20% off
        $123 $99
      • LAS 9:53 PM
        17h 47m
        1 stop
        STL 5:40 PM
        Las Vegas - St. Louis | Tue, Oct 13 | Frontier Airlines
        $100
        19% off
        $123 $100
      • LAS 1:00 PM
        17h 25m
        1 stop
        STL 2:00 PM
        Las Vegas - St. Louis | Sun, Sep 13 | Normal Airline
        Find more flights
        Find more flights

Flight.News
Flights from Las Vegas to St. Louis operate an average of 7 times per day over the past 7 days, with a 51.1% on-time departure rate and a 80.0% on-time arrival rate.

Which airlines are the most popular for Las Vegas to St. Louis flights?

Direct flights available! Find 1 airlines fly direct from Las Vegas to St. Louis, including Frontier Airlines, Frontier Airlines offers the cheapest non stop flights.
Frontier Airlines logo Frontier Airlines
Airlines are determined based on actual purchased flight tickets from Las Vegas to St. Louis according to previous 12 months data from Trip.com.

Flight Info | Las Vegas to St. Louis

The distance between Las Vegas and St. Louis is approximately 2,219.31 km. It takes around 3 hours 30 minutes on average to fly from Las Vegas to St. Louis. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight price $74
Cheapest round-trip ticket price $122
Off-season for travel October
Peak season for travel July
Flight distance 2,219.31 km
Average flight time 3 hours 30 minutes
Popular airline Frontier Airlines
Frequency ～26/week
Flight statistics for the Las Vegas–St. Louis route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com price insights on flights from Las Vegas to St. Louis

Which month has the cheapest one-way flights from Las Vegas to St. Louis?

The average price of one-way flights from Las Vegas to St. Louis purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Las Vegas to St. Louis is February, with an average price of $85; while the month with the highest flight price is usually September, with an average price of up to $364.

$364
$225
$85
0
    Cheapest
  • $161
    Aug
  • $364
    Sep
  • $99
    Oct
  • $161
    Nov
  • $187
    Dec
  • $245
    Jan
  • $85
    Feb
  • $235
    Mar
  • $237
    Apr
  • $315
    May
  • $344
    Jun
  • $115
    Jul

Frequently Asked Questions

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

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $74 on Cheapest nonstop routes (e.g. LAS to STL on Fri, Sep 18), while Frontier Airlines offers Cheapest nonstop round-trips from $122 departing on Tue, Sep 29 and returning on Tue, Oct 6.
  • At the moment, you can catch a nonstop flight from Las Vegas to St. Louis 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 3 hours 30 minutes to fly from Las Vegas (LAS) to St. Louis (STL).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Las Vegas to St. Louis 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.
  • Based on Trip.com data in the past 4 weeks, there is 38 flight per week flying from Las Vegas to St. Louis. You can check the weekly schedule for popular airlines on this route below: Frontier Airlines: S/M/T/W/T/F/S -- F93108 (06:11)
  • To find best deals on flights from Las Vegas to St. Louis, 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 Fri, Sep 18, with one-way flights priced at just $74.
    · 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 St. Louis travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Las Vegas to St. Louis is October, when demand for travel is lower.
  • After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Las Vegas to St. Louis on September 16, 2026 with Frontier Airlines, with prices starting at $83.
  • You can arrive at any of the following airports in St. Louis: St. Louis Lambert International Airport (STL), and St. Louis Downtown Airport (CPS). Flights from Harry Reid International Airport to St. Louis Lambert International Airport (LAS-STL) are by far the most popular option for this route.
  • The time difference between St. Louis and Las Vegas 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.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Las Vegas to St. Louis is $245. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Las Vegas to St. Louis is $335. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Las Vegas and St. Louis, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Frontier Airlinesare the most popular budget airlines flying from Las Vegas to St. Louis. Check baggage, seat and payment fees before comparing the final price.

Explore More Popular Flights

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

Book with no extra fees

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.