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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$60 CHEAP FLIGHTS from Illinois to Las Vegas

LAS

KAYAK searches hundreds of travel sites at once for deals on flights 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, May 31 - Thu, Jun 4

12:20 pm - 1:52 pm

MLI

LAS

3h 32mnonstop

6:25 am - 11:39 am

LAS

MLI

3h 14mnonstop

$123Allegiant Air

Mon, Apr 20 - Fri, Apr 24

3:21 pm - 9:32 pm

STL

LAS

8h 11m

1 stop

3:48 pm - 9:13 pm

LAS

STL

3h 25mnonstop

$142Frontier

Tue, May 19 - Fri, May 22

9:14 pm - 10:28 am

ORD

LAS

15h 14m

1 stop

12:18 am - 5:50 am

LAS

ORD

3h 32mnonstop

$156Spirit Airlines

Tue, Apr 14 - Wed, Apr 22

9:45 am - 7:49 pm

ORD

LAS

12h 04m

1 stop

6:00 am - 8:19 pm

LAS

ORD

12h 19m

1 stop

$157Spirit Airlines

Thu, Apr 30 - Sat, May 2

8:58 pm - 11:25 pm

ORD

LAS

4h 27mnonstop

12:18 am - 5:50 am

LAS

ORD

3h 32mnonstop

$162Multiple Airlines

Sun, Apr 12 - Fri, Apr 17

7:55 am - 7:58 am

ORD

LAS

26h 03m

1 stop

5:34 pm - 7:00 am

LAS

ORD

11h 26m

1 stop

$163Multiple Airlines

Sat, Apr 11 - Thu, Apr 16

7:45 pm - 9:57 pm

ORD

LAS

4h 12mnonstop

11:59 pm - 5:37 am

LAS

ORD

3h 38mnonstop

$164United Airlines

Tue, Apr 14 - Wed, Apr 15

8:55 pm - 10:50 pm

MDW

LAS

3h 55mnonstop

11:55 pm - 5:25 am

LAS

MDW

3h 30mnonstop

$179Southwest

Sat, May 2 - Wed, May 6

6:25 pm - 8:20 pm

MDW

LAS

3h 55mnonstop

11:55 pm - 5:25 am

LAS

MDW

3h 30mnonstop

$181Southwest

Sat, May 9 - Fri, May 15

1:36 pm - 6:28 pm

BMI

LAS

6h 52m

1 stop

11:22 pm - 8:59 am

LAS

BMI

7h 37m

1 stop

$270United Airlines

Useful Info

Low season	January
High season	March
Cheapest flight	$60

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 St. Louis to Las Vegas

Verified travelerFlew with United Airlines

ORD

LAS

Mar 2025

If you can select your seats in advance please do

Verified travelerFlew with Spirit Airlines

ORD

LAS

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.

Primm

Winchester

Sunrise Manor

Everything you need to know for your flight to Las Vegas

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Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

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

Las Vegas (LAS)

LAS

$60 Find Cheap Flights from Illinois to Las Vegas

KAYAK searches hundreds of travel sites at once for deals on flights to Las Vegas

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

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

FAQs for booking flights from Illinois to Las Vegas

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.

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