LAS

$51 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, Aug 30 - Thu, Sep 3
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
Allegiant Air Logo
7:05 am - 12:23 pm
LAS
-
MLI
3h 18mnonstop
$123Allegiant Air
Sun, Aug 30 - Thu, Sep 3
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
Allegiant Air Logo
7:05 am - 12:23 pm
LAS
-
MLI
3h 18mnonstop
$129Allegiant Air
Wed, Oct 28 - Sat, Oct 31
Frontier Logo
5:32 pm - 7:15 pm
STL
-
LAS
3h 43mnonstop
Frontier Logo
5:18 pm - 10:39 pm
LAS
-
STL
3h 21mnonstop
$176Frontier
Wed, Oct 28 - Sat, Oct 31
Frontier Logo
5:32 pm - 7:15 pm
STL
-
LAS
3h 43mnonstop
Frontier Logo
5:18 pm - 10:39 pm
LAS
-
STL
3h 21mnonstop
$178Frontier
Sun, Aug 16 - Thu, Aug 20
Multiple Airlines Logo
11:37 am - 9:58 pm
RFD
-
LAS
36h 21m
2 stops
Multiple Airlines Logo
3:18 pm - 8:45 pm
LAS
-
RFD
3h 27mnonstop
$202Multiple Airlines
Sun, Aug 23 - Tue, Aug 25
Multiple Airlines Logo
9:35 pm - 11:21 pm
RFD
-
LAS
3h 46mnonstop
Multiple Airlines Logo
10:07 pm - 1:23 pm
LAS
-
RFD
13h 16m
1 stop
$208Multiple Airlines
Mon, Sep 7 - Thu, Sep 10
Alaska Airlines Logo
6:01 am - 12:04 pm
ORD
-
LAS
8h 03m
1 stop
Alaska Airlines Logo
2:51 pm - 11:59 pm
LAS
-
ORD
7h 08m
1 stop
$237Alaska Airlines
Wed, Sep 9 - Thu, Sep 10
Alaska Airlines Logo
7:20 am - 2:11 pm
ORD
-
LAS
8h 51m
1 stop
Alaska Airlines Logo
10:23 am - 7:21 pm
LAS
-
ORD
6h 58m
1 stop
$239Alaska Airlines
Sat, Sep 19 - Fri, Sep 25
Delta Logo
5:16 pm - 11:36 pm
MLI
-
LAS
8h 20m
1 stop
Delta Logo
12:30 am - 10:13 am
LAS
-
MLI
7h 43m
1 stop
$271Delta
Tue, Oct 20 - Mon, Oct 26
Delta Logo
5:10 pm - 11:19 pm
MLI
-
LAS
8h 09m
1 stop
Delta Logo
12:35 am - 10:21 am
LAS
-
MLI
7h 46m
1 stop
$271Delta
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Good to know

Low season

June

Cheapest flight

$51
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)