LAS

$49 Find Cheap Flights from Illinois to Las Vegas - Compare and Save

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 7/15. 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, 0 bags

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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, Aug 23 - Thu, Aug 27
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
Allegiant Air Logo
7:05 am - 12:16 pm
LAS
-
MLI
3h 11mnonstop
$117Allegiant Air
Sun, Jul 5 - Thu, Jul 16
Allegiant Air Logo
12:31 pm - 1:58 pm
MLI
-
LAS
3h 27mnonstop
Allegiant Air Logo
6:25 am - 11:41 am
LAS
-
MLI
3h 16mnonstop
$157Allegiant Air
Mon, Aug 3 - Sat, Aug 15
Southwest Logo
3:20 pm - 6:45 pm
STL
-
LAS
5h 25m
1 stop
Southwest Logo
6:10 am - 3:25 pm
LAS
-
STL
7h 15m
2 stops
$200Southwest
Tue, Jul 7 - Fri, Jul 10
Frontier Logo
7:03 pm - 8:36 pm
STL
-
LAS
3h 33mnonstop
Frontier Logo
12:50 pm - 6:15 pm
LAS
-
STL
3h 25mnonstop
$201Frontier
Fri, Jul 17 - Mon, Jul 27
Frontier Logo
7:10 pm - 8:43 pm
STL
-
LAS
3h 33mnonstop
Frontier Logo
12:50 pm - 6:15 pm
LAS
-
STL
3h 25mnonstop
$202Frontier
Sat, Oct 10 - Tue, Oct 13
Multiple Airlines Logo
6:50 am - 8:58 am
ORD
-
LAS
4h 08mnonstop
Multiple Airlines Logo
3:30 pm - 11:59 pm
LAS
-
ORD
6h 29m
1 stop
$224Multiple Airlines
Sat, Sep 5 - Tue, Sep 8
Southwest Logo
6:35 am - 11:15 am
MDW
-
LAS
6h 40m
2 stops
Southwest Logo
9:10 am - 5:10 pm
LAS
-
MDW
6h 00m
1 stop
$225Southwest
Sat, Aug 8 - Mon, Aug 10
Multiple Airlines Logo
6:20 am - 5:32 pm
ORD
-
LAS
13h 12m
1 stop
Multiple Airlines Logo
11:49 pm - 5:37 am
LAS
-
ORD
3h 48mnonstop
$226Multiple Airlines
Tue, Aug 4 - Tue, Aug 11
American Airlines Logo
8:58 pm - 10:55 pm
ORD
-
LAS
3h 57mnonstop
American Airlines Logo
3:39 pm - 9:55 pm
LAS
-
ORD
4h 16mnonstop
$227American Airlines
Tue, Jul 14 - Sat, Jul 18
American Airlines Logo
4:30 pm - 10:25 pm
BMI
-
LAS
7h 55m
1 stop
American Airlines Logo
6:00 am - 3:56 pm
LAS
-
BMI
7h 56m
1 stop
$354American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$49
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly and prices are also 8% 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 Airlines
ORD
-
LAS
Mar 2025
If you can select your seats in advance please do
Verified travelerFlew with Spirit Airlines
ORD
-
LAS
Sep 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
Winchester
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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)