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.

$63 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

$136Allegiant 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

$155Allegiant Air

Sat, Sep 26 - Tue, Oct 6

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

3h 35mnonstop

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

3h 17mnonstop

$179Frontier

Mon, Sep 28 - Tue, Oct 6

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

3h 35mnonstop

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

3h 17mnonstop

$179Frontier

Sun, Oct 11 - Thu, Oct 15

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

3h 43mnonstop

9:55 pm - 11:27 amLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

11h 32m1 stop Phoenix Sky Harbor Intl

$204Multiple Airlines

Sun, Oct 18 - Wed, Oct 28

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

3h 43mnonstop

9:37 am - 12:22 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

24h 45m2 stops Denver Intl Nashville Intl

$208Multiple Airlines

Sat, Sep 19 - Wed, Sep 23

5:16 pm - 11:36 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

8h 20m1 stop Atlanta Hartsfield-Jackson

12:00 pm - 10:30 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

8h 30m1 stop Atlanta Hartsfield-Jackson

$271Delta

Sat, Sep 19 - Tue, Sep 22

5:16 pm - 11:36 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

8h 20m1 stop Atlanta Hartsfield-Jackson

6:00 am - 4:22 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

8h 22m1 stop Atlanta Hartsfield-Jackson

$271Delta

Sat, Nov 28 - Mon, Nov 30

9:25 pm - 1:14 amMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

5h 49m1 stop Denver Intl

12:30 am - 10:14 amLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

7h 44m1 stop Chicago O'Hare Intl

$271United Airlines

Sat, Sep 19 - Tue, Sep 22

10:42 am - 5:46 pmMLI Moline Quad-City-LAS Las Vegas Harry Reid Intl

9h 04m1 stop Chicago O'Hare Intl

12:40 pm - 9:00 pmLAS Las Vegas Harry Reid Intl-MLI Moline Quad-City

6h 20m1 stop Chicago O'Hare Intl

$271United Airlines

Recent last minute flight deals from Illinois to Las Vegas

Sun, Aug 23 - Thu, Aug 27

9:35 pm - 11:21 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 46mnonstop

3:18 pm - 8:45 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

3h 27mnonstop

$220Allegiant Air

Fri, Aug 21 - Mon, Aug 24

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

4h 12mnonstop

12:56 pm - 7:02 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

4h 06mnonstop

$225Frontier

Fri, Aug 21 - Sun, Sep 27

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

$229Frontier

Sun, Aug 23 - Thu, Aug 27

9:35 pm - 11:21 pmRFD Chicago Greater Rockford-LAS Las Vegas Harry Reid Intl

3h 46mnonstop

3:18 pm - 8:45 pmLAS Las Vegas Harry Reid Intl-RFD Chicago Greater Rockford

3h 27mnonstop

$233Allegiant Air

Mon, Aug 24 - Sat, Aug 29

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

4h 12mnonstop

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

6h 58m1 stop San Diego

$285Multiple Airlines

Sat, Aug 22 - Wed, Sep 23

6:00 am - 1:31 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

9h 31m1 stop Seattle/Tacoma Intl

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

3h 48mnonstop

$288Multiple Airlines

Sat, Aug 22 - Wed, Sep 23

8:45 pm - 10:52 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 07mnonstop

12:40 pm - 6:32 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 52mnonstop

$343United Airlines

Sat, Aug 22 - Wed, Sep 23

6:59 am - 11:43 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

6h 44m1 stop Phoenix Sky Harbor Intl

6:32 am - 12:30 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 58mnonstop

$353American Airlines

Tue, Aug 25 - Wed, Aug 26

9:17 am - 11:23 amORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 06mnonstop

4:08 pm - 10:00 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 52mnonstop

$403United Airlines

Tue, Aug 25 - Tue, Sep 1

1:41 pm - 3:36 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

11:50 pm - 5:36 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 46mnonstop

$403American Airlines

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

$136Allegiant 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

$155Allegiant Air

Sat, Sep 26 - Tue, Oct 6

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

3h 35mnonstop

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

3h 17mnonstop

$179Frontier

Mon, Sep 28 - Tue, Oct 6

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

3h 35mnonstop

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

3h 17mnonstop

$179Frontier

Thu, Jan 7 - Fri, Jan 8

9:30 pm - 11:44 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 14mnonstop

12:30 am - 6:08 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$283United Airlines

Sat, Oct 10 - Wed, Oct 14

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

4h 08mnonstop

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

3h 32mnonstop

$283United Airlines

Tue, Sep 8 - Tue, Sep 15

6:37 pm - 8:37 pmORD Chicago O'Hare Intl-LAS Las Vegas Harry Reid Intl

4h 00mnonstop

11:50 pm - 5:35 amLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 45mnonstop

$283American Airlines

Tue, Oct 20 - Tue, Nov 10

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

4h 17mnonstop

5:37 pm - 11:30 pmLAS Las Vegas Harry Reid Intl-ORD Chicago O'Hare Intl

3h 53mnonstop

$283American Airlines

Tue, Sep 29 - Wed, Sep 30

8:20 pm - 10:15 pmMDW Chicago Midway-LAS Las Vegas Harry Reid Intl

3h 55mnonstop

5:00 pm - 10:30 pmLAS Las Vegas Harry Reid Intl-MDW Chicago Midway

3h 30mnonstop

$283Southwest

Sat, Nov 14 - Mon, Nov 16

6:15 pm - 8:20 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

$283Southwest

Useful Info

Low season	June
High season	October
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

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.

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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

$63 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