$74 Find Cheap Flights from Los Angeles 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 Los Angeles to Illinois departing on 10/17. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Los Angeles to Illinois.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Los Angeles to Illinois.
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Cheap Flights from Los Angeles to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$143
Moline
Moline1 stop$269
Peoria
Peoria2 stops$286
Bloomington
Bloomington1 stop$379
Champaign
Champaign1 stop$518
Springfield
Springfield1 stop$380
Decatur
Decatur1 stop$374
St. Louis
St. Louis2 stops$216
Chicago
Chicago1 stop$143
Moline
Moline1 stop$269
Peoria
Peoria2 stops$286
Bloomington
Bloomington1 stop$379
Champaign
Champaign1 stop$518
Springfield
Springfield1 stop$380
Decatur
Decatur1 stop$374
St. Louis
St. Louis2 stops$216

Book Cheap Los Angeles 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 Los Angeles 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 Los Angeles to Illinois

Sat, Sep 27 - Sat, Oct 4
Multiple Airlines Logo
1:23 pm - 11:58 pmLAX-ORD
8h 35m1 stop
Multiple Airlines Logo
7:09 pm - 9:40 pmORD-LAX
4h 31mnonstop
$143Multiple Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
Spirit Airlines Logo
12:05 pm - 6:14 pmLAX-ORD
4h 09mnonstop
Spirit Airlines Logo
7:09 pm - 9:40 pmORD-LAX
4h 31mnonstop
$144Spirit Airlines
Find Deal
Sat, Nov 15 - Mon, Nov 17
Frontier Logo
7:00 pm - 7:54 amLAX-ORD
10h 54m1 stop
Frontier Logo
6:30 am - 8:56 amORD-LAX
4h 26mnonstop
$145Frontier
Find Deal
Thu, Oct 2 - Sat, Oct 4
Frontier Logo
4:21 pm - 10:43 pmLAX-ORD
4h 22mnonstop
Frontier Logo
7:00 am - 9:29 amORD-LAX
4h 29mnonstop
$146Frontier
Find Deal
Tue, Oct 14 - Tue, Oct 21
Southwest Logo
4:00 pm - 10:00 pmLAX-MDW
4h 00mnonstop
Southwest Logo
9:25 pm - 11:55 pmMDW-LAX
4h 30mnonstop
$197Southwest
Find Deal
Sat, Oct 11 - Tue, Oct 14
Southwest Logo
5:55 am - 12:00 pmLAX-MDW
4h 05mnonstop
Southwest Logo
9:25 pm - 11:55 pmMDW-LAX
4h 30mnonstop
$208Southwest
Find Deal
Wed, Nov 19 - Sun, Nov 23
American Airlines Logo
12:45 am - 9:18 amLAX-PIA
6h 33m1 stop
American Airlines Logo
10:45 am - 6:07 pmPIA-LAX
9h 22m1 stop
$289American Airlines
Find Deal
Mon, Oct 13 - Tue, Oct 21
American Airlines Logo
12:45 am - 10:12 amLAX-MLI
7h 27m1 stop
American Airlines Logo
6:20 am - 11:54 amMLI-LAX
7h 34m1 stop
$289American Airlines
Find Deal
Tue, Nov 11 - Sun, Nov 16
United Airlines Logo
12:25 am - 10:15 amLAX-MLI
7h 50m1 stop
United Airlines Logo
5:20 pm - 11:59 pmMLI-LAX
8h 39m1 stop
$313United Airlines
Find Deal
Thu, Mar 5 - Tue, Mar 10
United Airlines Logo
12:20 am - 10:51 amLAX-DEC
8h 31m1 stop
United Airlines Logo
3:20 pm - 9:53 pmDEC-LAX
8h 33m1 stop
$374United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Los Angeles to Illinois flights

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

What is the cheapest Los Angeles to Illinois flight route?

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

The cheapest ticket to Illinois from Los Angeles found in the last 72 hours was to Chicago, at $137 round-trip. The most popular route is from Los Angeles (LAX) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $137.

Can I save money by flying with a layover from Los Angeles 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 $286, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Los Angeles to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Los Angeles 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 Los Angeles to Illinois is February, when tickets cost $247 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $334 and $329 respectively.

What’s the cheapest day of the week to fly from Los Angeles to Illinois?

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

When flying from Los Angeles to Illinois, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Los Angeles, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

How far in advance should I book a flight from Los Angeles 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 Los Angeles 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 Los Angeles to Illinois, you should book around 3 weeks before departure, which saves you about 29% 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$74
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Los Angeles to St. Louis

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Los Angeles 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 Los Angeles to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Los Angeles 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 Los Angeles 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 Los Angeles 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 Los Angeles 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 Los Angeles to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost $280 on average. Morning departures are around 43% 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 $452.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Los Angeles to the following destinations at these prices or less: Chicago $144 one-way - $225 round-trip

Reviews of the top 5 airlines serving from Los Angeles to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Los Angeles 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 Los Angeles 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.
8.0
SouthwestOverall score based on 4242 reviews
7.0Food
8.0Comfort
7.5Entertainment
8.6Crew
8.1Boarding
Airline reviews

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

10.0 ExcellentRobert, Sep 2025SFO - LAS
Read more Southwest reviews

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Worst experience I had on Southwest. Still better than most, but the seating was barely tolerable.

It was okay. The plane was delayed from earlier in the day, but they kept updating the departure time, sometimes later, sometimes earlier. That was stressful. Once we finally got on and took off, it was fine. I was supposed to have a connection in Chicago to Los Angeles, and the time for so late I was rebooked to arrive in LA 3 hours late. The departure time to Chicago later became early enough to have taken my original connection and arrive earlier but that wasn't an option.

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

The food was the worst I’ve had on any flight I’ve ever been on.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

Bad food, small seats that didn’t recline. I thought I was buying a quantas ticket so I feel like I got scammed

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

No frills - because you get what you pay for. The crew was amazing!! I had plenty of room to spread out because the flight was half full. Which made it easy to sleep.

Dear All, I have harassment and accident with the flight attendant . This is my phone to talk 8168073567, please, leave phone message . Regards Emily,

Flight was on time but the amount of noise from several children and the kicking of my seat the entire flight was overwhelming.

Had a issue with catching flight due to airline, was unable to board flight

First off, i received an e-mail to allow me to check in for our flight. I folllowed the link, when it came to the seat selection, I was unable to select any "free" seats ( meaning without any additional charge) because everything was " unavailable". My Husband and I were ttavelling with our 3 children hence, i wanted to be assured that we were all seated next to each other. I tried 3 times and everytime I click the selection it said " error loading". What the system wants is for me to buy the seats ( anywhere from $25 to $50 dollars each passenger) like I did on our flight bound to L.A. I called customer service and the guy was unhelpful all he kept repeating was to come really early at the airport and we will be assigned seats there. Imagine my anxiety!!! Spirit says they are a budget airline but they are actually the opposite!! And just before our flight, the flight attendant KEPT announcing/ selling the seats that were not purchased for a cheaper price!! Like it was a bidding/ bargaining game! This was our first and last time to fly Spirit.

Too many time late and postponed No electrical power for my electric devices

Spirit is by far the worst airline to travel with, period. Seats are cardboard, flight attendants need anger management and if you ask for water, you’re basically a criminal. I don’t care how much it costs but I will travel with an airline who actually cares about their customers. Oh and one more thing, the next time your gate agent puts his foot on someone’s baggage's scale, I hope they get what’s coming next, a viral video of your scams. You suck Spirit, do better.

I mean, it’s Spirit. But it was frustrating to have our flight canceled, get bumped to a later flight, and then Spirit was unwilling to check our bag until 4 hours before our flight… tell us we could not sit in the waiting area’s chairs… and really negative experience getting checked in and dropping the bag.

terrible service, no room for a dog underfoot, a broken chair that is impossible to sit on and all this costs a lot of money

It was fast but uncomfortable seats. Had to pay a bit extra not sure why? Maybe in selection of all my 4 tix together ? Just knew I had a balance before getting boarding pass online when departing from satx ? And flight was delayed..

Severe turbulence. Captain never came on to reassure passengers after things settled down.

We were delayed three times ,and that destroyed my plans, and reservations

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The crew was delayed because they came on another flight that was delayed due to weather 10pm flight left at 1.30 am The airline made no effort to align alternate crew

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

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