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.

$71 CHEAP FLIGHTS from Illinois to Las Vegas

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Illinois to Las Vegas

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Las Vegas

Wed, Dec 2 - Sat, Dec 5

12:51 pm - 3:12 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 21mnonstop

6:00 am - 11:46 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 46mnonstop

$132Frontier

Thu, Feb 4 - Sun, Feb 7

12:47 pm - 2:30 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

6:45 am - 11:57 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 12mnonstop

$148Allegiant Air

Mon, Dec 7 - Wed, Dec 9

12:51 pm - 3:12 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 21mnonstop

6:00 am - 11:46 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 46mnonstop

$148Frontier

Thu, Feb 4 - Sun, Feb 7

12:47 pm - 2:30 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

6:45 am - 11:57 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 12mnonstop

$148Allegiant Air

Sun, Nov 15 - Thu, Nov 19

8:37 pm - 10:23 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 46mnonstop

8:51 pm - 12:26 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

13h 35m1 stop Phoenix Sky Harbor Intl

$215Multiple Airlines

Sun, Nov 1 - Thu, Nov 5

8:53 pm - 10:36 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

5:54 pm - 10:33 amLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

14h 39m2 stops Santa Ana J. Wayne/Orange Cnty Phoenix-Mesa Gateway

$216Multiple Airlines

Tue, Oct 20 - Wed, Oct 21

9:10 pm - 11:10 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 00mnonstop

3:30 pm - 10:45 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

5h 15m1 stop Phoenix Sky Harbor Intl

$217Southwest

Wed, Jan 13 - Wed, Jan 20

10:00 am - 1:25 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

5h 25m1 stop Wichita Eisenhower National

7:10 am - 12:35 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 25mnonstop

$217Southwest

Sat, Oct 24 - Sat, Oct 31

7:00 am - 3:00 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

10h 00m1 stop Seattle/Tacoma Intl

9:40 am - 6:53 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

7h 13m1 stop San Diego

$258Alaska Airlines

Wed, Dec 2 - Wed, Dec 9

6:00 am - 2:45 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

10h 45m1 stop Seattle/Tacoma Intl

6:00 am - 5:01 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

9h 01m1 stop Seattle/Tacoma Intl

$263Alaska Airlines

Recent last minute flight deals from Illinois to Las Vegas

Fri, Sep 18 - Wed, Oct 21

8:55 pm - 11:05 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 10mnonstop

6:30 am - 6:34 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

22h 04m1 stop Los Angeles Los Angeles

$220Frontier

Fri, Sep 18 - Thu, Oct 15

8:55 pm - 11:05 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 10mnonstop

1:45 pm - 6:34 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

14h 49m1 stop Los Angeles Los Angeles

$225Frontier

Tue, Sep 15 - Tue, Sep 22

1:21 pm - 3:30 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 09mnonstop

8:45 am - 7:21 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

8h 36m1 stop San Diego

$313Multiple Airlines

Tue, Sep 15 - Sat, Sep 19

1:21 pm - 3:30 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 09mnonstop

10:23 am - 7:21 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

6h 58m1 stop San Diego

$313Multiple Airlines

Thu, Sep 17 - Thu, Sep 24

9:29 pm - 11:08 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 39mnonstop

3:15 pm - 8:39 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

3h 24mnonstop

$327Allegiant Air

Thu, Sep 17 - Thu, Sep 24

9:29 pm - 11:08 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 39mnonstop

3:15 pm - 8:39 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

3h 24mnonstop

$334Allegiant Air

Fri, Sep 18 - Fri, Sep 25

2:18 pm - 10:35 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

10h 17m1 stop San Diego

5:28 pm - 1:22 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

17h 54m1 stop San Diego

$367Alaska Airlines

Tue, Sep 15 - Wed, Oct 14

4:45 pm - 6:54 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 09mnonstop

11:43 pm - 5:15 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 32mnonstop

$367United Airlines

Sat, Sep 19 - Wed, Sep 23

7:20 am - 2:11 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

8h 51m1 stop San Diego

8:45 am - 7:21 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

8h 36m1 stop San Diego

$374Alaska Airlines

Tue, Sep 15 - Tue, Sep 29

10:42 am - 3:02 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

6h 20m1 stop Chicago O'Hare Intl

11:47 am - 8:48 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

7h 01m1 stop Denver Intl

$377United Airlines

Recent direct flight deals from Illinois to Las Vegas

Wed, Dec 2 - Sat, Dec 5

12:51 pm - 3:12 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 21mnonstop

6:00 am - 11:46 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 46mnonstop

$132Frontier

Thu, Feb 4 - Sun, Feb 7

12:47 pm - 2:30 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

6:45 am - 11:57 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 12mnonstop

$148Allegiant Air

Mon, Dec 7 - Wed, Dec 9

12:51 pm - 3:12 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 21mnonstop

6:00 am - 11:46 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 46mnonstop

$148Frontier

Thu, Feb 4 - Sun, Feb 7

12:47 pm - 2:30 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

6:45 am - 11:57 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 12mnonstop

$148Allegiant Air

Mon, Nov 2 - Wed, Nov 4

5:45 am - 7:45 amMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 00mnonstop

5:00 pm - 10:25 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 25mnonstop

$237Southwest

Tue, Jan 26 - Sun, Jan 31

12:50 pm - 2:50 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 00mnonstop

12:10 am - 5:40 amLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 30mnonstop

$237Southwest

Tue, Oct 20 - Tue, Nov 10

6:50 am - 9:01 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 11mnonstop

10:05 am - 3:53 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$311American Airlines

Wed, Oct 21 - Mon, Oct 26

8:42 pm - 10:55 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 13mnonstop

12:20 am - 5:59 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 39mnonstop

$311American Airlines

Tue, Nov 3 - Tue, Nov 3

4:15 pm - 6:28 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 13mnonstop

11:59 pm - 5:32 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 33mnonstop

$311United Airlines

Sat, Oct 10 - Sat, Oct 17

3:52 pm - 6:01 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 09mnonstop

7:00 am - 12:50 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 50mnonstop

$311United Airlines

Useful Info

Low season	August
High season	October
Cheapest flight	$71

Best time to beat the crowds with an average 4% drop in price.

Most popular time to fly with an average 2% increase in price.

Flight from Peoria to Las Vegas

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.

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.