LAS

$42 Find Cheap Flights from Illinois to Las Vegas

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Las Vegas departing on 8/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Flights Deals

Cheap Flights from Illinois to Las Vegas

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Las Vegas that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Las Vegas

Sat, Aug 2 - Tue, Aug 5
Spirit Airlines Logo
7:49 pm - 9:55 pmORD-LAS
4h 06mnonstop
Spirit Airlines Logo
12:34 am - 6:03 amLAS-ORD
3h 29mnonstop
$85Spirit Airlines
Find Deal
Tue, Jul 29 - Mon, Aug 4
Spirit Airlines Logo
3:18 pm - 5:19 pmORD-LAS
4h 01mnonstop
Spirit Airlines Logo
12:34 am - 6:03 amLAS-ORD
3h 29mnonstop
$87Spirit Airlines
Find Deal
Mon, Jul 28 - Fri, Aug 1
Logo
9:56 pm - 12:05 amORD-LAS
4h 09mnonstop
Logo
12:34 am - 6:03 amLAS-ORD
3h 29mnonstop
$94
Find Deal
Sun, Sep 14 - Thu, Sep 18
Frontier Logo
12:43 pm - 2:49 pmORD-LAS
4h 06mnonstop
Frontier Logo
6:00 am - 11:48 amLAS-ORD
3h 48mnonstop
$96Frontier
Find Deal
Sun, Aug 24 - Sun, Aug 31
Allegiant Air Logo
12:58 pm - 2:42 pmRFD-LAS
3h 44mnonstop
Allegiant Air Logo
6:45 am - 12:08 pmLAS-RFD
3h 23mnonstop
$99Allegiant Air
Find Deal
Mon, Jul 28 - Sat, Aug 2
Logo
9:56 pm - 12:05 amORD-LAS
4h 09mnonstop
Logo
8:35 am - 2:13 pmLAS-ORD
3h 38mnonstop
$99
Find Deal
Sun, Aug 24 - Sun, Aug 31
Allegiant Air Logo
12:58 pm - 2:42 pmRFD-LAS
3h 44mnonstop
Allegiant Air Logo
6:45 am - 12:08 pmLAS-RFD
3h 23mnonstop
$101Allegiant Air
Find Deal
Sun, Aug 3 - Fri, Aug 8
Frontier Logo
9:56 pm - 12:05 amORD-LAS
4h 09mnonstop
Frontier Logo
3:00 pm - 9:06 pmLAS-ORD
4h 06mnonstop
$104Frontier
Find Deal
Sat, Oct 11 - Tue, Oct 14
American Airlines Logo
7:05 am - 9:03 amORD-LAS
3h 58mnonstop
American Airlines Logo
11:43 am - 5:41 pmLAS-ORD
3h 58mnonstop
$133American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
8:25 pm - 10:27 pmORD-LAS
4h 02mnonstop
American Airlines Logo
11:47 pm - 5:23 amLAS-ORD
3h 36mnonstop
$139American Airlines
Find Deal
Useful Info

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$42
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Chicago O'Hare Airport to Las Vegas

Flights from Illinois to Las Vegas: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Illinois to Las Vegas 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with United AirlinesORD-LASMar 2025
If you can select your seats in advance please do
Verified travelerFlew with Spirit AirlinesORD-LASSep 2024
Make sure you get your seats booked at time of booking or at the least when you check in and make sure you check in at the earliest to have preferred seating.

FAQs for booking flights from Illinois to Las Vegas

  • How does KAYAK find such low prices on flights from Illinois to Las Vegas?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Las Vegas.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Las Vegas?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Las Vegas from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Las Vegas?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Las Vegas with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Las Vegas?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Las Vegas from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Las Vegas

Information on the airport you'll fly into in Las Vegas

Las Vegas (LAS)

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