LAS

$69 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 10/28. 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, Nov 15 - Tue, Nov 24
Allegiant Air Logo
2:38 pm - 4:10 pm
MLI
-
LAS
3h 32mnonstop
Allegiant Air Logo
2:58 pm - 8:06 pm
LAS
-
MLI
3h 08mnonstop
$129Allegiant Air
Tue, Sep 22 - Wed, Sep 23
Alaska Airlines Logo
3:19 pm - 11:17 pm
STL
-
LAS
9h 58m
1 stop
Alaska Airlines Logo
6:29 pm - 5:10 pm
LAS
-
STL
20h 41m
1 stop
$137Alaska Airlines
Sat, Oct 3 - Wed, Oct 7
Alaska Airlines Logo
4:42 pm - 10:59 pm
STL
-
LAS
8h 17m
1 stop
Alaska Airlines Logo
7:02 am - 11:59 pm
LAS
-
STL
14h 57m
1 stop
$137Alaska Airlines
Sun, Nov 15 - Tue, Nov 24
Allegiant Air Logo
2:38 pm - 4:10 pm
MLI
-
LAS
3h 32mnonstop
Allegiant Air Logo
2:58 pm - 8:06 pm
LAS
-
MLI
3h 08mnonstop
$155Allegiant Air
Sun, Sep 13 - Wed, Sep 16
Frontier Logo
1:02 pm - 10:46 am
STL
-
LAS
23h 44m
1 stop
Frontier Logo
9:45 am - 7:17 pm
LAS
-
STL
7h 32m
1 stop
$161Frontier
Wed, Sep 30 - Sat, Oct 3
Frontier Logo
8:10 pm - 8:28 am
STL
-
LAS
14h 18m
1 stop
Frontier Logo
6:45 am - 7:17 pm
LAS
-
STL
10h 32m
1 stop
$170Frontier
Wed, Sep 30 - Tue, Oct 6
Delta Logo
6:55 pm - 11:35 pm
STL
-
LAS
6h 40m
1 stop
Delta Logo
5:10 pm - 12:44 am
LAS
-
STL
5h 34m
1 stop
$187Delta
Sat, Aug 29 - Tue, Sep 1
American Airlines Logo
5:13 pm - 11:07 pm
STL
-
LAS
7h 54m
1 stop
American Airlines Logo
11:50 pm - 8:24 am
LAS
-
STL
6h 34m
1 stop
$187American Airlines
Sat, Sep 5 - Tue, Sep 8
American Airlines Logo
5:11 pm - 10:35 pm
STL
-
LAS
7h 24m
1 stop
American Airlines Logo
11:59 pm - 9:24 am
LAS
-
STL
7h 25m
1 stop
$187American Airlines
Sat, Sep 5 - Mon, Sep 7
Delta Logo
5:00 pm - 10:36 pm
STL
-
LAS
7h 36m
1 stop
Delta Logo
12:40 am - 10:23 am
LAS
-
STL
7h 43m
1 stop
$197Delta
Useful Info

Good to know

Low season

June

Cheapest flight

$69
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly and prices are also 1% 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
Primm
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)