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.

$83 CHEAP FLIGHTS from Illinois to Las Vegas

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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 11

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

$160Allegiant Air

Sun, Oct 25 - Thu, Nov 5

2:10 pm - 3:42 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 32mnonstop

6:35 am - 11:53 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 18mnonstop

$163Allegiant Air

Fri, Nov 13 - Sun, Nov 15

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

$201Frontier

Fri, Nov 6 - Mon, Nov 9

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

$201Frontier

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

$214Multiple 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

$217Multiple Airlines

Wed, Oct 21 - Wed, Oct 28

9:00 am - 6:09 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

11h 09m1 stop Seattle/Tacoma Intl

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

8h 31m1 stop Seattle/Tacoma Intl

$250Alaska Airlines

Wed, Oct 21 - Wed, Oct 28

3:49 pm - 10:59 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

9h 10m1 stop Seattle/Tacoma Intl

7:02 am - 4:50 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

7h 48m1 stop Seattle/Tacoma Intl

$256Alaska Airlines

Sat, Oct 17 - Tue, Oct 20

4:38 pm - 11:34 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

8h 56m1 stop Dallas/Fort Worth

3:25 pm - 11:17 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

5h 52m1 stop Dallas/Fort Worth

$271American Airlines

Sat, Oct 24 - Tue, Oct 27

5:03 pm - 9:49 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

6h 46m1 stop Chicago O'Hare Intl

12:20 am - 10:51 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

8h 31m1 stop Chicago O'Hare Intl

$271American Airlines

Recent last minute flight deals from Illinois to Las Vegas

Sun, Sep 13 - Wed, Sep 30

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

$211Frontier

Sun, Sep 13 - Thu, Sep 17

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

$211Allegiant Air

Sun, Sep 13 - Sun, Nov 1

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

4h 10mnonstop

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

3h 44mnonstop

$216Frontier

Thu, Sep 10 - Thu, Sep 17

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

$216Allegiant Air

Sun, Sep 13 - Sun, Nov 1

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

4h 10mnonstop

8:30 am - 5:10 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

6h 40m1 stop Minneapolis St Paul

$302Multiple Airlines

Mon, Sep 14 - Fri, Sep 18

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

4h 10mnonstop

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

17h 54m1 stop San Diego

$323Multiple Airlines

Tue, Sep 15 - Tue, Sep 29

12:08 pm - 4:18 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

6h 10m1 stop Dallas/Fort Worth

3:11 pm - 11:18 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

6h 07m1 stop Dallas/Fort Worth

$348American Airlines

Tue, Sep 15 - Wed, Sep 23

4:33 pm - 10:26 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

7h 53m1 stop Dallas/Fort Worth

2:01 pm - 11:18 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

7h 17m1 stop Dallas/Fort Worth

$357American Airlines

Thu, Sep 10 - Tue, Oct 13

4:00 pm - 5:50 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 50mnonstop

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

3h 30mnonstop

$369Southwest

Thu, Sep 10 - Wed, Oct 14

10:15 am - 1:15 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

5h 00m1 stop Colorado Springs

3:35 pm - 9:05 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 30mnonstop

$375Southwest

Recent direct flight deals from Illinois to Las Vegas

Sun, Feb 7 - Thu, Feb 11

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

$160Allegiant Air

Sun, Oct 25 - Thu, Nov 5

2:10 pm - 3:42 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 32mnonstop

6:35 am - 11:53 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 18mnonstop

$163Allegiant Air

Fri, Nov 13 - Sun, Nov 15

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

$201Frontier

Fri, Nov 6 - Mon, Nov 9

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

$201Frontier

Tue, Oct 13 - Mon, Oct 19

7:25 am - 9:20 amMDW 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

$311Southwest

Wed, Nov 4 - Fri, Nov 6

8:50 pm - 10:55 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 05mnonstop

12:20 am - 5:40 amLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 20mnonstop

$311Southwest

Tue, Jan 5 - Sat, Jan 9

6:00 pm - 8:15 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 15mnonstop

12:45 pm - 6:35 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 50mnonstop

$311United Airlines

Tue, Oct 13 - Tue, Oct 20

4:35 pm - 6:43 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 08mnonstop

12:38 pm - 6:32 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 54mnonstop

$311United Airlines

Sat, Feb 13 - Tue, Feb 16

8:50 pm - 11:03 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 13mnonstop

1:49 pm - 8:00 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

4h 11mnonstop

$311American Airlines

Tue, Oct 20 - Tue, Nov 10

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

4h 11mnonstop

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

3h 52mnonstop

$311American Airlines

Useful Info

Low season	August
High season	October
Cheapest flight	$83

Best time to beat the crowds with an average 3% drop in price.

Most popular time to fly with an average 1% 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.