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Cheap flights from Belleville, IL to Las Vegas (BLV - LAS)

BLV — LAS
May 21 — May 281
Thu 5/21
Thu 5/28
1 adult, Economy
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Find cheap flights from Belleville to Las Vegas with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Belleville to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Belleville (BLV) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

September

Cheapest in

January

Average price

$256

Good round-trip deal

$232 or less
Provider with most accurate pricing for Belleville-Las Vegas Harry Reid Intl flight deals.
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Provider most trusted by Cheapflights users for Belleville-Las Vegas Harry Reid Intl flights.
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Highest demand for flights based on searches. 24% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in April 2026
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Price to beat on a round-trip flight from Belleville to Las Vegas Harry Reid Intl.
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Compare providers for flights from Belleville to Las Vegas

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Belleville to Las Vegas in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Belleville, Illinois-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Belleville, Illinois-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Belleville, Illinois-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Belleville, Illinois-Las Vegas flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Belleville, Illinois-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Belleville to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Belleville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belleville to Las Vegas

What is the cheapest month to book a flight from Belleville, Illinois to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from Belleville, Illinois to Las Vegas (average of $185). Flying from Belleville, Illinois to Las Vegas in September is currently the most expensive (average of $496). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated April 21, 2026.
Get a feel of what it's like to fly with Allegiant Air and Frontier from Belleville to Las Vegas by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Allegiant Air
7.3
Good
706 reviews

Crew

8.1

Food

5.9

Boarding

7.6

Entertainment

5.5

Comfort

6.9

Overall

7.3

Reviews

1 / 20
4.0
Okay

Michael,Feb 2026

PIE - IND

I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.
Allegiant Air
7.3
Good
706 reviews
Allegiant Air
7.3
Good
706 reviews

Crew

8.1

Food

5.9

Boarding

7.6

Entertainment

5.5

Comfort

6.9

Overall

7.3

Reviews

1 / 20
4.0
Okay

Michael,Feb 2026

PIE - IND

I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.
Frontier
5.7
Fair
2,982 reviews
Allegiant Air
7.3
Good
706 reviews

Crew

8.1

Food

5.9

Boarding

7.6

Entertainment

5.5

Comfort

6.9

Overall

7.3

Reviews

1 / 20
4.0
Okay

Michael,Feb 2026

PIE - IND

I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.

Related info for your journey

Find useful and relevant information for your journey from Belleville to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Belleville, Illinois to Las Vegas flight route?

    The Belleville to Las Vegas Harry Reid Intl flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Belleville, Illinois to Las Vegas round-trip?

    Our cheapest airline available from Belleville, Illinois to Las Vegas is Allegiant Air. Our recent data shows that you can find tickets from as low as $110 on this airline. An additional option worth looking into is Frontier, starting at $148. Allegiant Air is currently priced 59% below the average price you’ll pay for this route.

  • Can I find deals for flights from Belleville to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Belleville to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Belleville to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belleville to Las Vegas.

  • Can I find deals for business class flights from Belleville to Las Vegas?

    Yes. Cheapflights offers flight deals from Belleville to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Belleville, Illinois to Las Vegas?

    Currently, January is the cheapest month in which you can book a flight from Belleville, Illinois to Las Vegas (average of $185). Flying from Belleville, Illinois to Las Vegas in September is currently the most expensive (average of $496). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Mesquite
Henderson
North Las Vegas
Kingman
Winchester
Boulder City
Needles
Sunrise Manor

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Top 2 airlines flying from Belleville to Las Vegas

Discover the top 2 airlines that operate flights from Belleville to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$110Average$242FlexibilityNo cancel feeOn-time88%
FrontierCheapest$148Average$300FlexibilityNo cancel feeOn-time62%

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