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.

$85 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

Sun, Feb 7 - Thu, Feb 18

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

3h 43mnonstop

6:35 am - 11:42 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 07mnonstop

$136Allegiant Air

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

$141Allegiant Air

Thu, Oct 22 - Fri, Oct 23

4:20 pm - 8:50 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

6h 30m1 stop Phoenix Sky Harbor Intl

6:15 am - 6:34 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

22h 19m1 stop Los Angeles

$218Frontier

Thu, Dec 3 - Sat, Dec 5

5:35 am - 8:50 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

29h 15m1 stop Orlando

8:53 am - 12:54 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

14h 01m1 stop Denver Intl

$218Frontier

Wed, Oct 28 - Tue, Nov 3

5:50 pm - 7:45 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

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

5h 00m1 stop Oklahoma City Will Rogers World

$219Southwest

Tue, Oct 20 - Sat, Oct 24

6:05 am - 8:05 amMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 00mnonstop

7:45 pm - 4:30 amLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

6h 45m1 stop San Diego

$219Southwest

Tue, Oct 27 - Tue, Nov 3

8:40 am - 12:30 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

5h 50m1 stop Denver Intl

12:50 pm - 6:38 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$219United Airlines

Sat, Oct 17 - Tue, Oct 20

5:00 am - 8:36 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

5h 36m1 stop Denver Intl

4:38 pm - 10:29 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 51mnonstop

$219United Airlines

Sun, Oct 11 - Tue, Oct 20

9:33 pm - 11:16 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 43mnonstop

12:52 am - 8:50 amLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

29h 58m2 stops Houston George Bush Intcntl Fort Lauderdale

$219Multiple Airlines

Thu, Feb 4 - Wed, Feb 17

7:30 am - 9:58 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 28mnonstop

6:00 am - 1:54 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

5h 54m1 stop San Diego

$223Multiple Airlines

Recent last minute flight deals from Illinois to Las Vegas

Sun, Sep 27 - Thu, Oct 1

9:53 pm - 11:24 pmPIA Greater Peoria-LAS Las Vegas Harry Reid Intl

3h 31mnonstop

7:00 am - 12:12 pmLAS Las Vegas Harry Reid Intl-PIA Greater Peoria

3h 12mnonstop

$172Allegiant Air

Sun, Sep 27 - Thu, Oct 1

9:53 pm - 11:24 pmPIA Greater Peoria-LAS Las Vegas Harry Reid Intl

3h 31mnonstop

7:00 am - 12:12 pmLAS Las Vegas Harry Reid Intl-PIA Greater Peoria

3h 12mnonstop

$180Allegiant Air

Mon, Sep 28 - Tue, Oct 6

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

4h 10mnonstop

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$231Frontier

Sun, Sep 27 - Tue, Oct 6

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

4h 10mnonstop

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$231Frontier

Mon, Sep 28 - Wed, Oct 7

8:17 pm - 9:42 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

15h 25m1 stop San Diego

11:29 pm - 5:17 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$239Multiple Airlines

Sun, Sep 27 - Tue, Oct 6

7:20 am - 12:04 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

6h 44m1 stop San Diego

11:50 pm - 5:38 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 48mnonstop

$245Multiple Airlines

Sun, Sep 27 - Wed, Oct 28

7:20 am - 12:04 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

6h 44m1 stop San Diego

7:09 pm - 5:40 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

8h 31m1 stop Seattle/Tacoma Intl

$312Alaska Airlines

Mon, Sep 28 - Mon, Oct 5

8:17 pm - 9:42 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

15h 25m1 stop San Diego

8:23 pm - 1:25 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

15h 02m1 stop San Diego

$314Alaska Airlines

Mon, Sep 28 - Mon, Oct 5

8:50 pm - 10:45 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

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

3h 30mnonstop

$328Southwest

Mon, Sep 28 - Mon, Oct 5

5:00 pm - 8:00 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

5h 00m1 stop Kansas City

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

3h 30mnonstop

$338Southwest

Recent direct flight deals from Illinois to Las Vegas

Sun, Feb 7 - Thu, Feb 18

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

3h 43mnonstop

6:35 am - 11:42 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 07mnonstop

$136Allegiant Air

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

$141Allegiant Air

Thu, Jan 21 - Sun, Jan 24

7:30 am - 9:58 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 28mnonstop

12:25 am - 6:10 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 45mnonstop

$219Frontier

Sun, Nov 15 - Thu, Nov 19

5:15 pm - 7:36 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 21mnonstop

11:29 pm - 5:13 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 44mnonstop

$220Frontier

Sat, Oct 31 - Mon, Nov 2

7:20 am - 9:30 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 10mnonstop

4:11 pm - 10:00 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 49mnonstop

$235United Airlines

Mon, Dec 21 - Wed, Dec 23

7:15 am - 9:26 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 11mnonstop

7:00 am - 12:52 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 52mnonstop

$235United Airlines

Mon, Oct 5 - Tue, Oct 6

8:25 pm - 10:20 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

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

3h 30mnonstop

$235Southwest

Thu, Oct 22 - Mon, Oct 26

10:55 pm - 12:55 amMDW 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

$235Southwest

Sat, Oct 17 - Sat, Oct 24

7:36 pm - 9:49 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 13mnonstop

6:00 am - 11:52 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 52mnonstop

$271American Airlines

Tue, Feb 23 - Sat, Feb 27

4:58 pm - 7:14 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 16mnonstop

6:00 am - 11:52 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 52mnonstop

$271American Airlines

Useful Info

Low season	August
High season	October
Cheapest flight	$85

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

Most popular time to fly with an average 4% 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.