LAS

$54 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 2/28. 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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Everything you should know

Cheapest round-trip
$120
Typical prices: $211-$437
Frontier
Mon 3/2Fri 3/6
STL - LAS • Non-stop
Cheapest one-way
$54
Typical prices: $53-$178
Frontier
Sat 2/28
STL - LAS • Non-stop
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We hope you love your trip to Las Vegas!
Flight Deals
Useful Info
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

Mon, Mar 2 - Fri, Mar 6
Frontier Logo
10:11 pm - 11:59 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
6:05 am - 11:19 am
LAS
-
STL
3h 14mnonstop
$120Frontier
Sat, Feb 28 - Tue, Mar 3
Frontier Logo
6:41 pm - 8:31 pm
STL
-
LAS
3h 50mnonstop
Frontier Logo
11:03 pm - 10:27 pm
LAS
-
STL
21h 24m
1 stop
$127Frontier
Mon, Mar 2 - Wed, Mar 4
Frontier Logo
10:11 pm - 11:59 pm
STL
-
LAS
3h 48mnonstop
Frontier Logo
6:30 am - 3:53 pm
LAS
-
STL
7h 23m
1 stop
$128Frontier
Fri, May 15 - Sat, May 16
Multiple Airlines Logo
10:55 am - 3:35 pm
ORD
-
LAS
6h 40m
1 stop
Multiple Airlines Logo
7:00 am - 4:04 pm
LAS
-
ORD
7h 04m
1 stop
$162Multiple Airlines
Sat, May 30 - Wed, Jun 10
Spirit Airlines Logo
8:53 pm - 10:54 pm
ORD
-
LAS
4h 01mnonstop
Spirit Airlines Logo
11:59 pm - 5:31 am
LAS
-
ORD
3h 32mnonstop
$163Spirit Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
11:25 am - 6:42 pm
MDW
-
LAS
9h 17m
1 stop
Multiple Airlines Logo
6:55 pm - 10:45 pm
LAS
-
MDW
25h 50m
1 stop
$163Multiple Airlines
Sun, Apr 26 - Thu, Apr 30
Allegiant Air Logo
12:19 pm - 1:57 pm
MLI
-
LAS
3h 38mnonstop
Allegiant Air Logo
6:20 am - 11:29 am
LAS
-
MLI
3h 09mnonstop
$179Allegiant Air
Thu, Apr 2 - Thu, Apr 9
Allegiant Air Logo
12:17 pm - 1:55 pm
MLI
-
LAS
3h 38mnonstop
Allegiant Air Logo
6:20 am - 11:29 am
LAS
-
MLI
3h 09mnonstop
$187Allegiant Air
Wed, Apr 15 - Sat, Apr 18
American Airlines Logo
3:45 pm - 9:00 pm
BMI
-
LAS
7h 15m
1 stop
American Airlines Logo
5:45 am - 3:15 pm
LAS
-
BMI
7h 30m
1 stop
$251American Airlines
Sat, Apr 18 - Wed, Apr 22
American Airlines Logo
11:16 am - 6:15 pm
BMI
-
LAS
8h 59m
2 stops
American Airlines Logo
6:00 am - 2:16 pm
LAS
-
BMI
6h 16m
1 stop
$256American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$54
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 3% 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
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)