LAS

$43 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 11/8. 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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Flight 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

Sun, Oct 5 - Fri, Oct 10
Frontier Logo
1:03 pm - 3:22 pmORD-LAS
4h 19mnonstop
Frontier Logo
12:59 am - 11:53 pmLAS-ORD
20h 54m1 stop
$134Frontier
Find Deal
Sun, Nov 9 - Sat, Nov 15
Frontier Logo
10:43 pm - 12:44 amORD-LAS
4h 01mnonstop
Frontier Logo
10:12 am - 12:12 amLAS-ORD
12h 00m1 stop
$135Frontier
Find Deal
Mon, Sep 29 - Thu, Oct 9
Multiple Airlines Logo
7:03 pm - 8:48 pmMDW-LAS
3h 45mnonstop
Multiple Airlines Logo
8:05 pm - 12:24 amLAS-MDW
26h 19m1 stop
$135Multiple Airlines
Find Deal
Tue, Dec 9 - Thu, Dec 11
Spirit Airlines Logo
8:30 pm - 10:35 pmORD-LAS
4h 05mnonstop
Spirit Airlines Logo
12:50 am - 6:25 amLAS-ORD
3h 35mnonstop
$136Spirit Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
Multiple Airlines Logo
7:03 pm - 8:48 pmMDW-LAS
3h 45mnonstop
Multiple Airlines Logo
6:00 am - 3:53 pmLAS-MDW
7h 53m1 stop
$136Multiple Airlines
Find Deal
Sun, Oct 19 - Thu, Oct 23
Allegiant Air Logo
12:28 pm - 1:59 pmMLI-LAS
3h 31mnonstop
Allegiant Air Logo
6:25 am - 11:38 amLAS-MLI
3h 13mnonstop
$140Allegiant Air
Find Deal
Sun, Jan 18 - Thu, Jan 22
Allegiant Air Logo
9:26 pm - 11:01 pmMLI-LAS
3h 35mnonstop
Allegiant Air Logo
3:20 pm - 8:36 pmLAS-MLI
3h 16mnonstop
$141Allegiant Air
Find Deal
Wed, Oct 1 - Thu, Oct 2
Spirit Airlines Logo
11:15 am - 1:16 pmORD-LAS
4h 01mnonstop
Spirit Airlines Logo
10:36 am - 9:58 pmLAS-ORD
9h 22m1 stop
$144Spirit Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 11
United Airlines Logo
9:15 am - 11:28 amORD-LAS
4h 13mnonstop
United Airlines Logo
11:59 pm - 5:33 amLAS-ORD
3h 34mnonstop
$159United Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
United Airlines Logo
1:35 pm - 7:00 pmSTL-LAS
7h 25m1 stop
United Airlines Logo
5:20 am - 12:39 pmLAS-STL
5h 19m1 stop
$167United Airlines
Find Deal

Everything you should know

Cheapest round-trip
$134
Overall average: $218
Frontier
Sun 10/5Fri 10/10
ORD - LAS • Non-stop
Cheapest non-stop
$135
Typical prices: $141-361
Spirit Airlines
Sat 11/8Thu 11/13
ORD - LAS • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Las Vegas!
Useful Info

Good to know

Low seasonJune
Cheapest flight$43
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from St. Louis 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.

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Primm
Winchester
Sunrise Manor

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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