$53 Find Cheap Flights from Las Vegas to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to Illinois departing on 7/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Illinois.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Illinois.
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Flight Deals

Cheap Flights from Las Vegas to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicagononstop$234
Moline
Molinenonstop$101
Peoria
Peorianonstop$195
Bloomington
Bloomington1 stop$329
Springfield
Springfield1 stop$593
St. Louis
St. Louis1 stop$199
Decatur
Decatur1 stop$414
Chicago
Chicagononstop$234
Moline
Molinenonstop$101
Peoria
Peorianonstop$195
Bloomington
Bloomington1 stop$329
Springfield
Springfield1 stop$593
St. Louis
St. Louis1 stop$199
Decatur
Decatur1 stop$414

Book Cheap Las Vegas to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Las Vegas to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Las Vegas to Illinois

Thu, Aug 13 - Sun, Aug 30
Allegiant Air Logo
6:25 am - 11:41 am
LAS
-
MLI
3h 16mnonstop
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
$101Allegiant Air
Thu, Aug 13 - Sun, Aug 30
Allegiant Air Logo
6:25 am - 11:41 am
LAS
-
MLI
3h 16mnonstop
Allegiant Air Logo
1:06 pm - 2:31 pm
MLI
-
LAS
3h 25mnonstop
$111Allegiant Air
Thu, Sep 17 - Sun, Sep 20
Allegiant Air Logo
7:05 am - 12:23 pm
LAS
-
MLI
3h 18mnonstop
Allegiant Air Logo
1:13 pm - 2:37 pm
MLI
-
LAS
3h 24mnonstop
$143Allegiant Air
Fri, Aug 7 - Sun, Aug 9
Southwest Logo
12:55 am - 9:10 am
LAS
-
STL
6h 15m
1 stop
Southwest Logo
8:45 pm - 10:15 pm
STL
-
LAS
3h 30mnonstop
$199Southwest
Sun, Aug 16 - Mon, Aug 17
Frontier Logo
12:50 pm - 6:15 pm
LAS
-
STL
3h 25mnonstop
Frontier Logo
7:10 pm - 8:43 pm
STL
-
LAS
3h 33mnonstop
$210Frontier
Sun, Aug 16 - Fri, Aug 21
Frontier Logo
11:50 pm - 8:57 am
LAS
-
STL
7h 07m
1 stop
Frontier Logo
6:45 pm - 8:20 pm
STL
-
LAS
3h 35mnonstop
$211Frontier
Thu, Aug 13 - Fri, Aug 14
United Airlines Logo
11:55 pm - 8:39 am
LAS
-
STL
6h 44m
1 stop
United Airlines Logo
4:40 pm - 8:51 pm
STL
-
LAS
6h 11m
1 stop
$212United Airlines
Wed, Aug 5 - Wed, Aug 12
United Airlines Logo
11:59 pm - 10:09 am
LAS
-
PIA
8h 10m
1 stop
United Airlines Logo
8:29 am - 1:07 pm
PIA
-
LAS
6h 38m
1 stop
$299United Airlines
Tue, Jul 28 - Sun, Aug 2
American Airlines Logo
12:59 am - 9:17 am
LAS
-
PIA
6h 18m
1 stop
American Airlines Logo
7:13 pm - 11:54 pm
PIA
-
LAS
6h 41m
1 stop
$314American Airlines
Wed, Jul 29 - Sun, Aug 2
American Airlines Logo
6:00 am - 3:56 pm
LAS
-
BMI
7h 56m
1 stop
American Airlines Logo
6:00 pm - 10:54 pm
BMI
-
LAS
6h 54m
1 stop
$329American Airlines
Booking Insights

KAYAK's insights & trends for Las Vegas to Illinois flights

Get data-powered insights and trends into flights from Las Vegas to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Las Vegas to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Las Vegas to Illinois departing in July.

What is the cheapest Las Vegas to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Las Vegas found in the last 5 days was to Chicago, at $132 round-trip. The most popular route is from Las Vegas (LAS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $223.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Las Vegas to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $343 on average. Morning departures are around 20% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $486.

Can I save money by flying with a layover from Las Vegas to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $329, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Las Vegas to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Las Vegas to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Las Vegas to Illinois is January, when tickets cost $29 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $740 and $96 respectively.

What’s the cheapest day of the week to fly from Las Vegas to Illinois?

The average price of all round-trip flights from Las Vegas to Illinois clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Las Vegas to Illinois, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Illinois, Sunday is the cheapest day to fly and Thursday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Las Vegas to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Las Vegas to Illinois, you should book around 2 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$53
Most popular time to fly and prices are also 2% lower on average.
Flight from Las Vegas to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Las Vegas to Illinois?

    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 Las Vegas to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Las Vegas to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Las Vegas to 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 Las Vegas to Illinois?

    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 from Las Vegas to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Las Vegas to Illinois?

    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 from Las Vegas to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Las Vegas to the following destinations at these prices or less: Chicago $180 one-way - $315 round-trip

Reviews of the top 5 airlines serving from Las Vegas to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Las Vegas to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4246 reviews
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
8.1Boarding
Airline reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

6.0 GoodSteven, Jun 2026
LAS - ONT
Read more Southwest reviews

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

The seat was not comfortable. 1D. My back was sore all night and the next day.

The new boarding process was easy and straightforward. Very pleasant.

It was as expected and I was grateful for the wheel chair help and ease of use.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

I always know what to expect from Southwest - friendly crew, on time departures. I like getting free baggage. The app works great and the in-flight entertainment passes the time.

We had to wait almost an hour for the wheelchair porter to be ready to pick up my mother. And when she arrived in Newark airport the porter was not there and she started walking with her cane and her poor mobility. When the Newark porter found her they didn't want to transfer her bags to the wheelchair for her.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

The plane was so gross and dirty. Literally saw dust layering and flowing out the grey vents. Dust was all over the air vent knobs to the point where I took my sani wipe and cleaned them down so at least it wasn't blowing my my face. Also, I upgraded and paid for Wifi and it's always so spotty. I get we are in the air, but don't charge for it if it's not going to work. I expect so much more from United. They really are giving up.

Too many canceled flights and kept my wife and I separated on alternate flights. We did not fly out of Denver. We paid a lot of money for the seats we wanted and now that money is gone and we did not sit together. That being said, the many agents were very friendly and did everything possible to help us.

It was soooo hot I was sweating even at altitude. I know you want people to sleep, but keeping it that hot is stupid!

Your app is impossible to use. I couldn't load it. Then i couldn't open it. When i finally got both those things done -with much help -then i couldn't open the app to install a credit card. The upshot was 4 flights without access to food or drink. When i first tried to download united app some company called starlier opened instead and i would up signing up for some 49 dollar a month music service which i still have not been able to cancel.

I contacted both carriers months beforehand to change the cabin (booked in April) but to no avail (united asked to contact Swiss since it was their equipment, Swiss told me to reach out to united). So yeah… My seat was pretty worn down, legroom on 27K was more than enough, but still economy seating so, getting to know your neighbours was easy. According to ground staff, the flight was massively overbooked- and this showed. I ordered a gluten free meal beforehand (which was honoured) but for breakfast got a bread roll and croissant 🤷🏼‍♂️ The connection itself is great. Leaving SFO late PM to arrive at ZRH in the afternoon makes it easier to get re adjusted again. However, and since I’ve flown this connection a couple of times in the past, I will rather deal with one carrier only and include a layover on the east coast.

Nothing bad to say about the actual crew or airline. It was nice to have a complimentary FULL can of soda, as well as a snack. Blankets and earbuds were also provided at no cost for this red eye flight. I especially appreciated the free WiFi and movie selection with the Bluetooth option. It helped the flight pass more quickly. No matter who you fly, boarding and disembarking are always SUCH a pain. As I mentioned, this is on the passengers and not the crew!!

You can not pay credit Card for purchase Of food in airplane

Overall good experience. The positive: nice courteous crew. A modern aircraft, with extra space for carry on luggage. The okeish: Unfortunately, no entertainment screens, you have to you use your phone with the United App. The bad: in seat power was not working in our row, even it was promised as an onboard service. We were looking to charge our almost depleted phone batteries during g the flight This no power also happened in the flight to las Vegas. We paid extra to be in seats closer to the entrance. It was not advised that the seats we selected couldn't recline as behind us was was the emergency exit.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

The flight was delayed 6 hours and we were only offered an $8 food credit. My husband stood in line to get the credit for 45 minutes and when he got close to the end of the line the computers went down.

Be just a little friendlier, instead of just doing their job and speaking because it’s their job. At least act they want to speak.

A foot rest for short legged people and a complimentary water would be nice.

weather delay of almost 2 hours then we landed and our gate wasn't available so we waited another 30 min

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

The boarding was pretty easy. However, the first class seats are not lay flat as other airlines (like JetBlue) has and therefore sleeping was a challenge.

Between Las Vegas and Dallas was okay But, once in the Dallas airport, notice, I have disability and ask for a wheelchair, they leave in a middle of nowhere, the personal in charge try to push me on a cart where I couldn't sit because was to high. Then they don't care about me, they bulling, till I start to yelling and crying, ask to everyone around, who can help me. The man in charge make a despective movements and said you are to loosing the fly. The last name in his batch started with an H, I did not have the full name. A nightmare. After all, a woman in charge was walking very slowly and asking me for a tip cause she was helping me to reach the fly. For years, AA has been the preferred airline. The personal in charge of the disabled people are discriminate me. Thank you Kayak.

Customer service in first class does not exist on American Airlines

I love to flight american however my carry on had to be sent with regular luggage and it was broken. Don't appreciate that. If when I buy a ticket says I can take a carry on and a hand item there should be space for mwsy stuff and not be basically forced to send the item even if it's at no charge. A.A. needs to work on that. Everything else excellent.

Flight was excellent. The food and service were great and the FA was very cordial and gracious.

The aircraft was on-time and plane and lavatory was clean.

It was freezing in there. When I asked about it, the response is “we would have to tell them” and then she just walked away and continued to serve beverages. Everyone was cold and they didn’t care at all.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

Both legs of the flight were changed. The day of the flight and length of the trip.

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

The worst flight of my life. Never will I fly frontier again

The plane was comfortable. The time to board was way too slow and very unorganized! The crew was not as friendly as normally. The was not a single time that they offered water nor anything!!!

This was a full flight and I was in Zone 1, however upon boarding, several other zones went in ahead of me, leaving no overhead cabin space near my seat. This created a challenging disembarkment process.

food not having to pay for it, reclining seat would be nice, more leg room, HEAT!!!!!!!

An absolutely fraudulent experience. Extremely unprofessional. Terrible in all ways possible. Rude staff, flight attendants, and deceptive "policies."

Very easy with the app to board and staff skills

Everything you need to know for your flight from Las Vegas to Illinois

Information on your arrival and departure airports