Cheap Flights from Oklahoma City to Illinois from AED 585 Roundtrip

Flight deals from Oklahoma City to Illinois

Looking for cheap flights from Oklahoma City to Illinois, or a last-minute trip? Find the lowest prices on one-way and round-trip flights right here.

Chicago.AED 585 per passenger.Departing Thu, Apr 23, returning Sun, Apr 26.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Oklahoma City Will Rogers World on Thu, Apr 23, arriving in Chicago Midway.Inbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Sun, Apr 26, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From AED 585, select.

Chicago.AED 889 per passenger.Departing Thu, Mar 26, returning Sat, Mar 28.Round-trip flight with United.Outbound direct flight with United departing from Oklahoma City Will Rogers World on Thu, Mar 26, arriving in Chicago O'Hare International.Inbound direct flight with United departing from Chicago O'Hare International on Sat, Mar 28, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From AED 889, select.

Moline.AED 1,228 per passenger.Departing Wed, Mar 4, returning Sun, Mar 8.Round-trip flight with United.Outbound indirect flight with United, departing from Oklahoma City Will Rogers World on Wed, Mar 4, arriving in Moline.Inbound indirect flight with United, departing from Moline on Sun, Mar 8, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From AED 1,228, select.

Peoria.AED 1,239 per passenger.Departing Tue, Mar 31, returning Tue, Apr 7.Round-trip flight with United.Outbound indirect flight with United, departing from Oklahoma City Will Rogers World on Tue, Mar 31, arriving in Greater Peoria.Inbound indirect flight with United, departing from Greater Peoria on Tue, Apr 7, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From AED 1,239, select.

Decatur.AED 3,066 per passenger.Departing Mon, Mar 2, returning Fri, Mar 6.Round-trip flight with United.Outbound indirect flight with United, departing from Oklahoma City Will Rogers World on Mon, Mar 2, arriving in Decatur.Inbound indirect flight with United, departing from Decatur on Fri, Mar 6, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From AED 3,066, select.

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Flying from Oklahoma City to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	AED 585
Cheapest month to fly	April
Average flight time	2 hrs, 7 mins
Cheapest airport to fly from	Oklahoma City Will Rogers World
Most popular airline	SkyWest Airlines

How to find cheap flights from Oklahoma City to Illinois

We've compared the best online travel agents and flight providers on the Internet to find the cheapest plane tickets from Oklahoma City to Illinois. Other savvy travelers recently found round-trip flights from AED 585 and one-way tickets from AED 293. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Oklahoma City Will Rogers World into Chicago Midway

At the moment, the lowest-priced flight tickets to Illinois are from Oklahoma City Will Rogers World Airport to Chicago Midway Airport.

Fly in April

We crunched the flight calendar and found the cheapest time to fly from Oklahoma City to Illinois is currently April.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Oklahoma City to anywhere you choose in Illinois.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Oklahoma City to Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the Illinois to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Oklahoma City to Illinois flight price?

We looked at all of the upcoming round-trip flights from Oklahoma City to Illinois we could find over the next 12 months. It looks like AED 585 is the best price. This is good, compared to the average Illinois ticket price of AED 1,401.

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

The cheapest month to fly from Oklahoma City to Decatur Airport is usually March. The cheapest month to fly from Oklahoma City to Chicago Midway Airport is usually April. The cheapest month to fly from Oklahoma City to Chicago O'Hare International Airport is usually March. And the cheapest month to fly from Oklahoma City to Moline Airport is usually March.

On which upcoming date is it cheapest to fly from Oklahoma City to Illinois?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Oklahoma City to Illinois on Thursday, April 23, 2026.

Are there any direct flights from Oklahoma City to Illinois?

Oklahoma City Will Rogers World Airport offers direct flights to Illinois.

If I'm flying from Oklahoma City, where in Illinois is cheapest to fly to?

If you're flying from Oklahoma City, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago Midway.