$93 Find Cheap Flights from Oklahoma City to Illinois - Compare and Save

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Cheap Flights from Oklahoma City to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Chicago
Chicago1 stop$138
Moline
Moline1 stop$369
Chicago
Chicago1 stop$138
Moline
Moline1 stop$369
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.

How much is a round-trip flight from Oklahoma City to Illinois?

Flight prices are below average for this route right now.

Flights to Illinois from Oklahoma City usually cost between $388 and $560 in November.
The lowest price found in the past 5 days was $138 on Frontier (Nov 16-Dec 9).

What is the cheapest Oklahoma City to Illinois flight route?

The cheapest ticket to Illinois from Oklahoma City found in the last 5 days was to Chicago, at $297 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 5 days was $347.

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 $568 on average. Morning departures are around 9% 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 $940.

Can I save money by flying with a layover from Oklahoma City to Illinois?

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $397 on average.

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

The cheapest month for flights from Oklahoma City to Illinois is August, when tickets cost $356 (return) on average. On the other hand, the most expensive months are November and July, when the average cost of round-trip tickets is $457 and $453 respectively.

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

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

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

To get a below average price on the flight from Oklahoma City to Illinois, you should book around 5 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low season

November

Cheapest flight

$93
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Oklahoma City to Chicago O'Hare 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.

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 $252 one-way - $388 round-trip; Chicago $289 one-way - $525 round-trip

Reviews of the top 3 airlines serving from Oklahoma City to Illinois

 
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.
7.9
SouthwestOverall score based on 4224 reviews
8.6Crew
8.0Comfort
8.1Boarding
7.0Food
7.4Entertainment
Airline reviews

Smooth flights, connection, and friendly crew in the air and at the gate.

10.0 ExcellentSunderesh, Oct 2026
Read more Southwest reviews

Smooth flights, connection, and friendly crew in the air and at the gate.

The entire crew were wonderful but 1 flight attendant stood out with his sense of humor on the microphone. I told him as much as I exited the plane.

Maybe different snack selection. To much sodium in them. I know refrigerators are not available but there has to be healthier items.

Wasn't expecting this, but, we actually ended up getting assigned to the first row of seats!!!!! The extra legroom came in handy

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

We sat on the plane on the tarmac for 4 hours.

Cramped older 737. Noisy passengers nearby. Wish you would change and make KC a hub with a direct from OKC. Best new airport!

Phx - ORD was nice 737 with starlink and the ORD - grr was ancient bare bones airbus with not even a power port lol

It was easy to board, and the staff was friendly and helpful. What could have been better is that I shouldn't have to pay extra for a seat that doesn't recline.

Was on the plane sitting longer than the actual flight in air was, boarded at 5:45p and didn't take off until 6:50p flight was only about 30 minutes long. Just was poor experience will booking more with American Airlines.

The couple in front of me were constantly talking over the announcement from the captain and this was annoying me.

The first leg of my trip the Republic Airlines aircraft was late due to a maintenance problem. Then I called United to reroute. Their reroute airline lost my bag but found it and returned it two days later. Hopefully my return trip home is better.

There was not even a single time where united airlines from lga has made to the gate straight , 1 hr if delay today

Takeoff delayed 2 hrs. Boarded on time to find we were missing part of the flight crew. Then informed that they had loaded too much fuel. Spent 1 1/2 hrs sitting there burning off the excess, which included a couple of laps around the runway until we were light enough to fly! Ridiculous!

Awful. Delay after delay. And then again on the tarmac.

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

Some of these FA’s need attitude check. Snarky bitches

The amount of gate changes and delays is completely unacceptable. This has happened on 3 of 4 trips between Chicago and Dallas in 2026.

The delay update was very late. I had a stressful short connection and RAN through Chicago to get to the next flight, only to find the plane wasn't at the gate yet an nobody was boarding. I would not have had to run if the delay was updated earlier.

No flight delays. No need to rebook to make connections. Enjoyed second leg of flight on Iberia.

Same the delay was not ideal and the credits to move flights was not sufficient

Over a 4.5 hour delay. Another flight took our plane and crew

My experience was fine, with one surprising exception. After leveling off at cruising altitude, the main cabin flight attendant made an announcement that he had a cold, so he would not be coming through the aisle to provide cabin service. He claimed this was in consideration of his health and safety and ours. However, if passengers wanted a beverage, he invited them to come to the back of he plane, where he would provide service. I understand that a flight attendant's primary responsibility is to ensure passenger safety, but a secondary role is to provide service. If this flight attendant was too sick to perform his duties - and if he truly cared about passenger health and safety , as he claimed - he should have stayed home and called in sick, rather than exposing the cabin to his germs.

Little bit of trouble getting my KTN and pre-check status onto the ticket, but otherwise the counter staff were friendly and truly concerned to get it right.

American Airlines is a great dependable airline, on time arrival and departure with polite crew and staff.

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

There was no drink/snack service and the electric outlets were not powered so I couldn’t charge my phone.

More options for your flight from Oklahoma City to Illinois

Complete your trip to Illinois with a hotel stay or car rental