LAS

$63 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 9/19. 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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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, Jan 24 - Thu, Jan 28
Allegiant Air Logo
12:47 pm - 2:23 pmMLI  Moline Quad-City-LAS Las Vegas Harry Reid Intl
3h 36mnonstop
Allegiant Air Logo
6:45 am - 11:57 amLAS  Las Vegas Harry Reid Intl-MLI Moline Quad-City
3h 12mnonstop
$136Allegiant Air
Sun, Sep 6 - Thu, Sep 10
Allegiant Air Logo
1:13 pm - 2:37 pmMLI  Moline Quad-City-LAS Las Vegas Harry Reid Intl
3h 24mnonstop
Allegiant Air Logo
7:05 am - 12:23 pmLAS  Las Vegas Harry Reid Intl-MLI Moline Quad-City
3h 18mnonstop
$155Allegiant Air
Sat, Oct 17 - Thu, Oct 22
Frontier Logo
7:42 pm - 11:46 pmSTL  Lambert-St Louis-LAS Las Vegas Harry Reid Intl
6h 04m1 stop Denver Intl
Frontier Logo
6:15 am - 11:31 amLAS  Las Vegas Harry Reid Intl-STL Lambert-St Louis
3h 16mnonstop
$177Frontier
Wed, Sep 9 - Tue, Sep 15
Frontier Logo
12:17 pm - 1:52 pmSTL  Lambert-St Louis-LAS Las Vegas Harry Reid Intl
3h 35mnonstop
Frontier Logo
6:15 am - 11:32 amLAS  Las Vegas Harry Reid Intl-STL Lambert-St Louis
3h 17mnonstop
$179Frontier
Sat, Oct 17 - Wed, Oct 21
Southwest Logo
2:55 pm - 7:55 pmMDW  Chicago Midway-LAS Las Vegas Harry Reid Intl
7h 00m1 stop Burbank Bob Hope
Southwest Logo
4:10 pm - 11:45 pmLAS  Las Vegas Harry Reid Intl-MDW Chicago Midway
5h 35m1 stop Dallas Love Field
$200Southwest
Sat, Oct 17 - Tue, Oct 20
Southwest Logo
3:00 pm - 6:20 pmMDW  Chicago Midway-LAS Las Vegas Harry Reid Intl
5h 20m1 stop Kansas City
Southwest Logo
4:10 pm - 11:45 pmLAS  Las Vegas Harry Reid Intl-MDW Chicago Midway
5h 35m1 stop Dallas Love Field
$200Southwest
Sun, Aug 30 - Thu, Sep 10
Multiple Airlines Logo
9:35 pm - 11:21 pmRFD  Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl
3h 46mnonstop
Multiple Airlines Logo
9:30 pm - 6:11 pmLAS  Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford
18h 41m1 stop Phoenix Sky Harbor Intl
$200Multiple Airlines
Sun, Oct 25 - Wed, Oct 28
Multiple Airlines Logo
6:14 pm - 10:47 pmORD  Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl
6h 33m1 stop Minneapolis St Paul
Multiple Airlines Logo
11:48 pm - 5:35 amLAS  Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl
3h 47mnonstop
$201Multiple Airlines
Thu, Dec 3 - Sun, Dec 6
United Airlines Logo
6:00 am - 7:57 amORD  Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl
3h 57mnonstop
United Airlines Logo
12:30 am - 6:08 amLAS  Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl
3h 38mnonstop
$203United Airlines
Thu, Dec 17 - Thu, Dec 31
United Airlines Logo
9:35 pm - 11:50 pmORD  Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl
4h 15mnonstop
United Airlines Logo
11:48 pm - 5:25 amLAS  Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl
3h 37mnonstop
$203United Airlines
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Good to know

Low season

June

Cheapest flight

$63
Best time to beat the crowds but there is an average 15% increase in price.
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-Mar 2025
If you can select your seats in advance please do
Verified travelerFlew with Spirit Airlines-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)