$54 Find Cheap Flights from Oklahoma City 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 Oklahoma City to Illinois departing on 11/10. 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 Oklahoma City to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oklahoma City to Illinois, as well as popular online travel agencies
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Cheap Flights from Oklahoma City to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
Chicago1 stop$180
Moline
Moline1 stop$249
Bloomington
Bloomington1 stop$427
St. Louis
St. Louis1 stop$135
Chicago
Chicago1 stop$180
Moline
Moline1 stop$249
Bloomington
Bloomington1 stop$427
St. Louis
St. Louis1 stop$135

Book Cheap Oklahoma City 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 Oklahoma City 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 Oklahoma City to Illinois

Wed, Nov 5 - Wed, Nov 12
Frontier Logo
3:42 pm - 9:07 amOKC-STL
17h 25m1 stop
Frontier Logo
7:45 pm - 7:00 pmSTL-OKC
23h 15m1 stop
$135Frontier
Find Deal
Sun, Dec 7 - Mon, Dec 8
Frontier Logo
8:28 pm - 10:02 amOKC-STL
13h 34m1 stop
Frontier Logo
7:43 pm - 6:04 pmSTL-OKC
22h 21m1 stop
$154Frontier
Find Deal
Thu, Nov 13 - Sun, Dec 14
Multiple Airlines Logo
7:45 pm - 12:15 amOKC-ORD
28h 30m1 stop
Multiple Airlines Logo
10:05 pm - 6:04 pmORD-OKC
43h 59m2 stops
$205Multiple Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
Multiple Airlines Logo
6:20 pm - 12:08 amOKC-ORD
5h 48m1 stop
Multiple Airlines Logo
10:05 pm - 6:04 pmORD-OKC
43h 59m2 stops
$217Multiple Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 20
United Airlines Logo
9:51 am - 12:08 pmOKC-ORD
2h 17mnonstop
United Airlines Logo
7:37 pm - 9:58 pmORD-OKC
2h 21mnonstop
$235United Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
4:01 pm - 11:54 pmOKC-ORD
7h 53m1 stop
American Airlines Logo
2:50 pm - 5:02 pmORD-OKC
2h 12mnonstop
$245American Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
American Airlines Logo
5:49 pm - 11:35 pmOKC-MLI
5h 46m1 stop
American Airlines Logo
3:37 pm - 10:13 pmMLI-OKC
6h 36m1 stop
$249American Airlines
Find Deal
Wed, Oct 29 - Fri, Oct 31
Southwest Logo
2:55 pm - 4:50 pmOKC-MDW
1h 55mnonstop
Southwest Logo
7:30 pm - 9:35 pmMDW-OKC
2h 05mnonstop
$256Southwest
Find Deal
Wed, Nov 5 - Wed, Nov 12
Southwest Logo
5:30 am - 6:55 amOKC-STL
1h 25mnonstop
Southwest Logo
10:15 am - 11:50 amSTL-OKC
1h 35mnonstop
$257Southwest
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Fri, Oct 24 - Tue, Oct 28
United Airlines Logo
10:30 am - 4:54 pmOKC-MLI
6h 24m1 stop
United Airlines Logo
1:00 pm - 7:14 pmMLI-OKC
6h 14m1 stop
$259United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Oklahoma City to Illinois flights

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

What is the cheapest Oklahoma City to Illinois flight route?

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

The cheapest ticket to Illinois from Oklahoma City found in the last 72 hours was to Chicago, at $254 round-trip. The most popular route is from Oklahoma City (OKC) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $254.

Can I save money by flying with a layover from Oklahoma City 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 $264, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Oklahoma City to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Oklahoma City 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 Oklahoma City to Illinois is September, when tickets cost $264 (return) on average. On the other hand, the most expensive months are March and July, when the average cost of round-trip tickets is $391 and $364 respectively.

What’s the cheapest day of the week to fly from Oklahoma City to Illinois?

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

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

How far in advance should I book a flight from Oklahoma City 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 Oklahoma City 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 Oklahoma City to Illinois, you should book around 2 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$54
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Oklahoma City to Chicago Midway Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Oklahoma City 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 Oklahoma City to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Oklahoma City 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 Oklahoma City 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 Oklahoma City 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 Oklahoma City 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 Oklahoma City 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 morning, when round-trip flights cost $540 on average. Morning departures are around 13% cheaper 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 $941.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Oklahoma City to the following destinations at these prices or less: Chicago $198 one-way - $392 round-trip; Chicago $205 one-way - $366 round-trip; St. Louis $268 one-way - $310 round-trip

Reviews of the top 4 airlines serving from Oklahoma City to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Oklahoma City 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 Oklahoma City 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 4237 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.1Boarding
8.6Crew
Airline reviews

mandatory demand customer to check their carry on because not enough people check bags.

6.0 GoodHung, Oct 2025PHX - ABQ
Read more Southwest reviews

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

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.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

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.

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 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.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

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.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

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

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Everything you need to know for your flight from Oklahoma City to Illinois

Information on your arrival and departure airports

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