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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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, Jan 24 - Thu, Jan 28

12:47 pm - 2:23 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 36mnonstop

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

3h 12mnonstop

$130Allegiant Air

Sun, Oct 11 - Thu, Oct 22

2:05 pm - 3:37 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 32mnonstop

6:35 am - 11:45 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 10mnonstop

$154Allegiant Air

Mon, Oct 19 - Thu, Oct 22

8:01 pm - 10:36 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

16h 35m1 stop Los Angeles

11:29 pm - 5:16 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 47mnonstop

$198Frontier

Fri, Sep 11 - Sat, Sep 19

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

$198Frontier

Thu, Sep 24 - Sat, Sep 26

3:19 pm - 11:17 pmSTL Lambert-St Louis-LAS Las Vegas Harry Reid Intl

9h 58m1 stop Seattle/Tacoma Intl

6:15 am - 11:32 amLAS Las Vegas Harry Reid Intl-STL Lambert-St Louis

3h 17mnonstop

$208Multiple Airlines

Mon, Oct 5 - Fri, Oct 9

12:17 pm - 1:52 pmSTL Lambert-St Louis-LAS Las Vegas Harry Reid Intl

3h 35mnonstop

2:07 pm - 11:59 pmLAS Las Vegas Harry Reid Intl-STL Lambert-St Louis

7h 52m1 stop Seattle/Tacoma Intl

$208Multiple Airlines

Wed, Sep 30 - Sat, Oct 3

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

8h 51m1 stop San Diego

7:01 am - 6:53 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

9h 52m1 stop San Diego

$271Alaska Airlines

Wed, Nov 11 - Sat, Nov 14

2:15 pm - 8:25 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

8h 10m1 stop San Diego

12:37 pm - 1:17 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

22h 40m1 stop San Diego

$271Alaska Airlines

Wed, Nov 11 - Tue, Nov 17

5:13 pm - 11:42 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

8h 29m1 stop Dallas/Fort Worth

12:08 am - 10:50 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

8h 42m1 stop Chicago O'Hare Intl

$271American Airlines

Sat, Dec 12 - Wed, Dec 16

5:13 pm - 11:35 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

8h 22m1 stop Dallas/Fort Worth

7:00 am - 4:43 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

7h 43m1 stop Dallas/Fort Worth

$271American Airlines

Recent last minute flight deals from Illinois to Las Vegas

Sun, Sep 6 - Thu, Sep 10

1:13 pm - 2:37 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 24mnonstop

7:05 am - 12:23 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 18mnonstop

$195Allegiant Air

Sun, Sep 6 - Thu, Sep 10

1:13 pm - 2:37 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 24mnonstop

7:05 am - 12:23 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 18mnonstop

$197Allegiant Air

Sun, Sep 6 - Fri, Sep 11

8:11 pm - 10:23 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 12mnonstop

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

3h 48mnonstop

$201Frontier

Sun, Sep 6 - Sat, Sep 12

8:11 pm - 10:23 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 12mnonstop

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

3h 48mnonstop

$202Frontier

Sun, Sep 6 - Fri, Sep 11

8:11 pm - 10:23 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 12mnonstop

7:07 pm - 1:22 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

16h 15m1 stop San Diego

$222Multiple Airlines

Sun, Sep 6 - Wed, Sep 9

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

15h 25m1 stop San Diego

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

3h 48mnonstop

$239Multiple Airlines

Sun, Sep 6 - Fri, Sep 11

6:05 am - 12:04 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

7h 59m1 stop San Diego

7:07 pm - 1:22 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

16h 15m1 stop San Diego

$301Alaska Airlines

Sun, Sep 6 - Wed, Sep 9

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

15h 25m1 stop San Diego

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

17h 54m1 stop San Diego

$305Alaska Airlines

Sun, Sep 6 - Fri, Sep 11

1:00 pm - 2:50 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 50mnonstop

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

3h 20mnonstop

$311Southwest

Sun, Sep 6 - Sat, Sep 12

8:35 am - 10:30 amMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

6:35 am - 12:05 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 30mnonstop

$311Southwest

Recent direct flight deals from Illinois to Las Vegas

Sun, Jan 24 - Thu, Jan 28

12:47 pm - 2:23 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 36mnonstop

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

3h 12mnonstop

$130Allegiant Air

Sun, Oct 11 - Thu, Oct 22

2:05 pm - 3:37 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

3h 32mnonstop

6:35 am - 11:45 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

3h 10mnonstop

$154Allegiant Air

Fri, Sep 11 - Sat, Sep 19

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

$198Frontier

Fri, Sep 11 - Thu, Sep 17

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

$199Frontier

Sat, Sep 19 - Mon, Sep 21

4:05 pm - 5:55 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 50mnonstop

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

3h 20mnonstop

$283Southwest

Mon, Nov 9 - Wed, Nov 11

6:05 pm - 8:10 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

4h 05mnonstop

6:50 pm - 12:10 amLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 20mnonstop

$283Southwest

Thu, Dec 17 - Wed, Dec 23

8:20 pm - 10:38 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 18mnonstop

11:50 pm - 5:31 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 41mnonstop

$283United Airlines

Sat, Oct 24 - Tue, Oct 27

1:30 pm - 3:32 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 02mnonstop

8:44 am - 2:29 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 45mnonstop

$283United Airlines

Thu, Oct 29 - Tue, Nov 3

4:59 pm - 7:15 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

$283American Airlines

Wed, Oct 7 - Wed, Oct 14

6:40 pm - 8:57 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 17mnonstop

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

3h 52mnonstop

$283American Airlines

Useful Info

Low season	June
High season	October
Cheapest flight	$83

Best time to beat the crowds but there is an average 14% increase in price.

Most popular time to fly with an average 1% increase in price.

Flight from St. Louis 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.

Winchester

Sunrise Manor

Primm

Everything you need to know for your flight to Las Vegas

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Information on the airport you'll fly into in Las Vegas

Las Vegas (LAS)

LAS

$83 Find Cheap Flights from Illinois to Las Vegas - Compare and Save

Cheap Flights from Illinois to Las Vegas

Recent round-trip flight deals from Illinois to Las Vegas

Recent one-way flight deals from Illinois to Las Vegas

Recent last minute flight deals from Illinois to Las Vegas

Recent direct flight deals from Illinois to Las Vegas

Good to know

Low season

High season

Cheapest flight

Flights from Illinois to Las Vegas: the best tips from KAYAK users

FAQs for booking flights from Illinois to Las Vegas

Traveling to a place near Las Vegas?

Everything you need to know for your flight to Las Vegas

Information on the airport you'll fly into in Las Vegas

Cabin class types available on flights to Illinois

Complete your trip to Las Vegas with a hotel stay or car rental

Find direct flights for Las Vegas

Flights to other popular destinations

Flights from domestic origins to Las Vegas

Choose which airport to fly into in Las Vegas

Find deals for your return flight