What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Illinois?

Spirit Airlines, Southwest, and Frontier are the most popular carriers operating from Las Vegas Harry Reid Intl to Illinois

What airlines fly to Illinois?

Spirit Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from Las Vegas according to our data. Spirit Airlines is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Las Vegas to Illinois on average per week?

As of September 2025, there are 425 flights per week flying from Las Vegas to Illinois. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.

How many flights depart from Las Vegas to Illinois on average per day?

As of September 2025, there are 60 flights per day flying from Las Vegas to Illinois. The most common time of day flights depart is 10:00AM, with 59% of flights taking off at noon.

When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Illinois?

Prices for flights from Las Vegas Harry Reid Intl Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Illinois?

As of September 2025, there are 7 operators available to choose from for flights from Las Vegas Harry Reid Intl Airport to Illinois.

How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Las Vegas Harry Reid Intl Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$74 Cheap Flights from Las Vegas to Illinois in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Las Vegas to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:20 am - 11:43 amLAS-STL

3h 23mnonstop

9:59 pm - 11:37 pmSTL-LAS

3h 38mnonstop

$77Frontier

Find Deal

Fri, Oct 10 - Mon, Oct 13

8:34 am - 1:53 pmLAS-STL

3h 19mnonstop

2:38 pm - 4:16 pmSTL-LAS

3h 38mnonstop

$103Frontier

Find Deal

Fri, Sep 26 - Mon, Sep 29

3:54 pm - 9:36 pmLAS-ORD

3h 42mnonstop

6:40 am - 8:34 amORD-LAS

3h 54mnonstop

$113Spirit Airlines

Find Deal

Thu, Oct 2 - Tue, Oct 7

3:50 pm - 9:32 pmLAS-ORD

3h 42mnonstop

9:00 am - 11:05 amORD-LAS

4h 05mnonstop

$114Spirit Airlines

Find Deal

Fri, Sep 26 - Tue, Sep 30

4:55 pm - 10:35 pmLAS-ORD

3h 40mnonstop

7:15 am - 9:20 amORD-LAS

4h 05mnonstop

$153Southwest

Find Deal

Wed, Dec 10 - Sun, Dec 14

11:55 pm - 5:45 amLAS-ORD

3h 50mnonstop

7:15 am - 9:25 amORD-LAS

4h 10mnonstop

$159American Airlines

Find Deal

Thu, Nov 6 - Sun, Nov 9

8:30 am - 2:05 pmLAS-MDW

3h 35mnonstop

6:05 am - 8:00 amMDW-LAS

3h 55mnonstop

$159Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

2:32 pm - 10:43 pmLAS-MLI

6h 11m1 stop

10:50 am - 5:52 pmMLI-LAS

9h 02m2 stops

$256United Airlines

Find Deal

Sat, Oct 11 - Sat, Oct 18

12:42 pm - 9:31 pmLAS-PIA

6h 49m1 stop

1:15 pm - 6:24 pmPIA-LAS

7h 09m1 stop

$264United Airlines

Find Deal

Wed, Dec 3 - Sun, Dec 7

12:52 pm - 11:35 pmLAS-MLI

8h 43m1 stop

6:32 pm - 10:53 pmMLI-LAS

6h 21m1 stop

$315American Airlines

Find Deal

Wed, Oct 8 - Sun, Oct 12

Spirit Airlines flights from Las Vegas to Illinois

Our best Spirit Airlines deals on Las Vegas to Illinois flight tickets

Spirit Airlines

Oct 2

LAS3:54 pmLas Vegas Harry Reid Intl

3h 42m

ORD9:36 pmChicago O'Hare Intl

Oct 7

ORD6:40 amChicago O'Hare Intl

3h 54m

LAS8:34 amLas Vegas Harry Reid Intl

$113

Find similar

Spirit Airlines

Sep 26

LAS3:50 pmLas Vegas Harry Reid Intl

3h 42m

ORD9:32 pmChicago O'Hare Intl

Sep 30

ORD9:00 amChicago O'Hare Intl

4h 05m

LAS11:05 amLas Vegas Harry Reid Intl

$114

Find similar

Spirit Airlines

Sep 27

LAS6:15 amLas Vegas Harry Reid Intl

3h 36m

ORD11:51 amChicago O'Hare Intl

Sep 29

ORD6:05 pmChicago O'Hare Intl

4h 06m

LAS8:11 pmLas Vegas Harry Reid Intl

$118

Find similar

Frontier flights from Las Vegas to Illinois

Our best Frontier deals on Las Vegas to Illinois flight tickets

Frontier

Oct 10

LAS6:20 amLas Vegas Harry Reid Intl

3h 23m

STL11:43 amLambert-St Louis

Oct 13

STL9:59 pmLambert-St Louis

3h 38m

LAS11:37 pmLas Vegas Harry Reid Intl

$77

Find similar

Frontier

Sep 19

LAS3:15 pmLas Vegas Harry Reid Intl

3h 25m

STL8:40 pmLambert-St Louis

Sep 22

STL9:29 pmLambert-St Louis

3h 36m

LAS11:05 pmLas Vegas Harry Reid Intl

$102

Find similar

Frontier

Sep 26

LAS8:34 amLas Vegas Harry Reid Intl

3h 19m

STL1:53 pmLambert-St Louis

Sep 29

STL2:38 pmLambert-St Louis

3h 38m

LAS4:16 pmLas Vegas Harry Reid Intl

$103

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 10/10

6:20 am-11:43 am

Nonstop3h 23m

Lambert-St Louis

Mon 10/13

9:59 pm-11:37 pm

Nonstop3h 38m

$77

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 9/26

8:34 am-1:53 pm

Nonstop3h 19m

Lambert-St Louis

Mon 9/29

2:38 pm-4:16 pm

Nonstop3h 38m

$103

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Thu 10/2

3:54 pm-9:36 pm

Nonstop3h 42m

Chicago O'Hare Intl

Tue 10/7

6:40 am-8:34 am

Nonstop3h 54m

$113

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 9/26

3:50 pm-9:32 pm

Nonstop3h 42m

Chicago O'Hare Intl

Tue 9/30

9:00 am-11:05 am

Nonstop4h 05m

$114

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Wed 12/10

4:55 pm-10:35 pm

Nonstop3h 40m

Chicago O'Hare Intl

Sun 12/14

7:15 am-9:20 am

Nonstop4h 05m

$153

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Thu 11/6

11:55 pm-5:45 am

Nonstop3h 50m

Chicago O'Hare Intl

Sun 11/9

7:15 am-9:25 am

Nonstop4h 10m

$159

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Wed 10/22

8:30 am-2:05 pm

Nonstop3h 35m

Chicago Midway

Wed 10/29

6:05 am-8:00 am

Nonstop3h 55m

$159

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Sat 10/11

2:32 pm-10:43 pm

1 stop6h 11m

Moline Quad-City

Sat 10/18

10:50 am-5:52 pm

2 stops9h 02m

$256

Las VegasPeoria

LAS - PIA

LASPIA

Las Vegas Harry Reid Intl

Wed 12/3

12:42 pm-9:31 pm

1 stop6h 49m

Greater Peoria

Sun 12/7

1:15 pm-6:24 pm

1 stop7h 09m

$264

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Wed 10/8

12:52 pm-11:35 pm

1 stop8h 43m

Moline Quad-City

Sun 10/12

6:32 pm-10:53 pm

1 stop6h 21m

$315

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Las Vegas to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Las Vegas is in September. Flight prices, which tend to average around $159, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $169.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Las Vegas to Illinois is on a Friday when prices can be found for as low as $273. Flights from Las Vegas to Illinois on a Sunday will generally be more expensive and average around $465. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Las Vegas to Illinois during this time can be as low as $229. Flights at noon are often more expensive with an average ticket price of $568.

What is the cheapest Las Vegas Harry Reid Intl to Illinois flight route?

Fly from Las Vegas Harry Reid Intl to Moline Quad-City for the best Las Vegas Harry Reid Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $244 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Las Vegas for as low as $180 on momondo.

What cabin class options are available on Las Vegas Harry Reid Intl to Illinois flights?

There are 4 cabin classes available to choose from on Las Vegas Harry Reid Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Las Vegas to Illinois flights?

No. A direct flight is the cheapest option for a flight between Las Vegas to Illinois.

Cheap Las Vegas to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Illinois

Best Price Found	$136
Fastest flight time	3h 05m
Direct flights	Every day
Airports in Illinois	4 airports

The best one-way flight to Illinois from Las Vegas in the past 72 hours is $136. The best round-trip flight deal from Las Vegas to Illinois found on momondo in the last 72 hours is $116.

The fastest flight from Las Vegas to Illinois takes 3h 05m

Direct flights go from Las Vegas to Illinois every day.

There are 4 airports near Illinois: Chicago Greater Rockford (RFD), Greater Peoria (PIA), Lambert-St Louis (STL), Moline Quad-City (MLI)

Search flight deals

When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Illinois?
Prices for flights from Las Vegas Harry Reid Intl Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Illinois?
As of September 2025, there are 7 operators available to choose from for flights from Las Vegas Harry Reid Intl Airport to Illinois.
How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Las Vegas Harry Reid Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Las Vegas to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Las Vegas to Illinois is Airbus A320neo, representing 13.59% of all bookings. The subsequent popular models are Boeing 737-800 at 13.19%, Boeing 737 MAX 8 at 10.55%, and Airbus A321-100/200 at 10.43%.

Best airlines flying from Las Vegas to Illinois

Compare and see reviews for airlines that fly from Las Vegas to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $67	Free Cancellation	Rating 6.3 8,015 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $79	Free Cancellation	Rating 5.8 3,172 reviews	Search Frontier flights
Allegiant Air	PriceFrom $91	Free Cancellation	Rating 7.2 699 reviews	Search Allegiant Air flights
Delta	PriceFrom $118	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $159	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Southwest	PriceFrom $159	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Illinois?

Finding the right flight to Illinois from Las Vegas is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from Las Vegas to Illinois with flexible booking policies on momondo?

All flight searches from Las Vegas to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Las Vegas to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Las Vegas.

I’m not ready to book a flight from Las Vegas to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Las Vegas to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Wed 10/15

Wed 10/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Illinois

Popular cities in Illinois

Flights to New Yorkfrom $49

Flights to Los Angelesfrom $49

Flights to Miamifrom $49

Flights to Chicagofrom $49

Flights to Orlandofrom $59

Flights to Las Vegasfrom $49

Flights to San Franciscofrom $58

Flights to Washington, D.C.from $54

Flights to Bostonfrom $62

Flights to Atlantafrom $49

Flights to Dallasfrom $68

Flights to Seattlefrom $69

Las Vegas flight routes

Flights from Las Vegas Harry Reid Intl to Salt Lake City

Flights from Las Vegas Harry Reid Intl to Santa Ana J. Wayne/Orange Cnty

Flights from Las Vegas Harry Reid Intl to Oakland

Flights from Las Vegas Harry Reid Intl to San Jose

Flights from Las Vegas Harry Reid Intl to San Diego

Flights from Las Vegas Harry Reid Intl to Tucson

Cheap flights from Las Vegas to Illinois from $74

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Illinois departing on 9/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Las Vegas to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Spirit Airlines flights from Las Vegas to Illinois

Our best Spirit Airlines deals on Las Vegas to Illinois flight tickets

Frontier flights from Las Vegas to Illinois

Our best Frontier deals on Las Vegas to Illinois flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Las Vegas to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Las Vegas to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Las Vegas to Illinois during this time can be as low as $229. Flights at noon are often more expensive with an average ticket price of $568.

What is the cheapest Las Vegas Harry Reid Intl to Illinois flight route?

Fly from Las Vegas Harry Reid Intl to Moline Quad-City for the best Las Vegas Harry Reid Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Las Vegas Harry Reid Intl to Illinois flights?

There are 4 cabin classes available to choose from on Las Vegas Harry Reid Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Las Vegas to Illinois flights?

No. A direct flight is the cheapest option for a flight between Las Vegas to Illinois.

What is the cheapest airline that flies from Las Vegas Harry Reid Intl to Illinois?

Spirit Airlines, Southwest, and Frontier are the most popular carriers operating from Las Vegas Harry Reid Intl to Illinois

What airlines fly to Illinois?

How many flights depart from Las Vegas to Illinois on average per day?

As of September 2025, there are 60 flights per day flying from Las Vegas to Illinois. The most common time of day flights depart is 10:00AM, with 59% of flights taking off at noon.

How many flights depart from Las Vegas to Illinois on average per week?

As of September 2025, there are 425 flights per week flying from Las Vegas to Illinois. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.

Cheap Las Vegas to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Illinois?

How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Illinois?

How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Las Vegas to Illinois?

Best airlines flying from Las Vegas to Illinois

Compare and see reviews for airlines that fly from Las Vegas to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Illinois?

Can I find flights from Las Vegas to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Las Vegas to Illinois?

I’m not ready to book a flight from Las Vegas to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo