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Oklahoma City

$96+ Cheap flights from Illinois to Oklahoma City (OKC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OKC
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
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Cheap flight deals from Illinois to Oklahoma City

Cheapest flights from Illinois to Oklahoma City
Explore the most affordable flight options available from Illinois to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 19, 2026.

This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:08 pm
STL
-
OKC
1 stop22h 23m
Frontier
Tue 7/217:16 pm
OKC
-
STL
1 stop24h 07m
Frontier
Deal found 6/17$242
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:08 pm
STL
-
OKC
1 stop22h 23m
Frontier
Mon 7/273:44 pm
OKC
-
STL
1 stop27h 39m
Frontier
Deal found 6/17$254
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/215:19 pm
STL
-
OKC
1 stop18h 14m
Frontier
Fri 10/231:56 pm
OKC
-
STL
1 stop5h 19m
Frontier
Deal found 6/17$258
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:08 pm
STL
-
OKC
1 stop22h 23m
Frontier
Fri 8/143:44 pm
OKC
-
STL
1 stop27h 39m
Frontier
Deal found 6/16$265
This Trip.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:08 pm
STL
-
OKC
1 stop22h 23m
Frontier
Wed 7/157:16 pm
OKC
-
STL
1 stop24h 07m
Frontier
Deal found 6/18$268
This Trip.com deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:08 pm
STL
-
OKC
1 stop18h 51m
Frontier
Sun 7/197:24 pm
OKC
-
STL
1 stop22h 51m
Frontier
Deal found 6/13$269
This Booking.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:06 am
ORD
-
OKC
1 stop25h 55m
Frontier
Wed 11/181:56 pm
OKC
-
ORD
1 stop20h 05m
Frontier
Deal found 6/18$272
This Trip.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/148:08 pm
STL
-
OKC
1 stop22h 23m
Frontier
Fri 7/173:44 pm
OKC
-
STL
1 stop27h 39m
Frontier
Deal found 6/14$273
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:10 pm
STL
-
OKC
1 stop16h 51m
Frontier
Mon 10/261:56 pm
OKC
-
STL
1 stop5h 19m
Frontier
Deal found 6/17$274
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:57 pm
ORD
-
OKC
1 stop17h 02m
Frontier
Thu 7/237:24 pm
OKC
-
ORD
1 stop10h 13m
Frontier
Deal found 6/17$275
This Booking.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:10 pm
STL
-
OKC
1 stop16h 51m
Frontier
Sun 9/2012:28 pm
OKC
-
STL
1 stop23h 23m
Frontier
Deal found 6/17$275
This Trip.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:57 pm
ORD
-
OKC
1 stop17h 02m
Frontier
Mon 8/173:44 pm
OKC
-
ORD
1 stop21h 52m
Frontier
Deal found 6/17$276

Find flight deals from Illinois to Oklahoma City

Keep the following information in mind while searching for Illinois to Oklahoma City flight deals. Data was last updated June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$242
(Booking.com)

One-way from

$96
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$455

Good round-trip deal

$394 or less

Good one-way deal

$205 or less
Provider with most accurate pricing for Chicago (CHI)-Oklahoma City Will Rogers World flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Oklahoma City Will Rogers World flights.
Search Deals
From Illinois to Oklahoma City Will Rogers World
Search Deals
One-way flight from Illinois to Oklahoma City Will Rogers World
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Oklahoma City Will Rogers World.
Search Deals
Price to beat on a one-way flight from Illinois to Oklahoma City Will Rogers World.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Oklahoma City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Illinois to Oklahoma City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoOklahoma City

MDW - OKC

MDWOKC

Chicago Midway

Wed 7/15

9:55 pm-11:55 pm

Nonstop2h 00m

Oklahoma City Will Rogers World

Wed 7/22

2:55 pm-4:50 pm

Nonstop1h 55m

$301

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Wed 9/30

2:50 pm-8:45 pm

2 stops5h 55m

Oklahoma City Will Rogers World

Thu 10/1

12:50 pm-8:55 pm

2 stops8h 05m

$306

BloomingtonOklahoma City

BMI - OKC

BMIOKC

Bloomington-Normal

Thu 7/9

4:18 pm-11:52 pm

1 stop7h 34m

Oklahoma City Will Rogers World

Wed 7/15

5:07 pm-10:48 pm

1 stop5h 41m

$309

BloomingtonOklahoma City

BMI - OKC

BMIOKC

Bloomington-Normal

Wed 9/2

5:00 am-10:36 am

1 stop5h 36m

Oklahoma City Will Rogers World

Sun 9/6

4:38 pm-10:53 pm

1 stop6h 15m

$309

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Sat 10/17

1:50 pm-8:35 pm

2 stops6h 45m

Oklahoma City Will Rogers World

Mon 10/19

7:30 am-1:10 pm

1 stop5h 40m

$310

ChicagoOklahoma City

MDW - OKC

MDWOKC

Chicago Midway

Sat 8/15

10:10 am-12:15 pm

Nonstop2h 05m

Oklahoma City Will Rogers World

Mon 8/17

5:15 am-7:05 am

Nonstop1h 50m

$317

PeoriaOklahoma City

PIA - OKC

PIAOKC

Greater Peoria

Thu 7/16

2:33 pm-10:17 pm

1 stop7h 44m

Oklahoma City Will Rogers World

Wed 7/22

8:45 am-1:57 pm

1 stop5h 12m

$327

ChicagoOklahoma City

MDW - OKC

MDWOKC

Chicago Midway

Thu 8/6

8:55 pm-10:55 pm

Nonstop2h 00m

Oklahoma City Will Rogers World

Mon 8/10

4:25 pm-10:00 pm

1 stop5h 35m

$327

ChicagoOklahoma City

ORD - OKC

ORDOKC

Chicago O'Hare Intl

Thu 8/6

5:30 am-10:22 am

1 stop4h 52m

Oklahoma City Will Rogers World

Mon 8/10

5:20 am-12:40 pm

1 stop7h 20m

$337

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Tue 10/20

3:45 pm-10:05 pm

2 stops6h 20m

Oklahoma City Will Rogers World

Fri 10/23

5:05 am-8:50 am

1 stop3h 45m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/13

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Oklahoma City

Have a flexible travel schedule? Discover the best time to fly to Oklahoma City from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Illinois to Oklahoma City?

Currently, October is the cheapest month in which you can book a flight from Illinois to Oklahoma City (average of $68). Flying from Illinois to Oklahoma City in March is currently the most expensive (average of $274). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to OKC?

Find hourly flight availability from Illinois to Oklahoma City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 19, 2026.

When flying from Illinois to Oklahoma City, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 16% versus a flight in the evening.

Weekly flight availability from Illinois to Oklahoma City

Explore weekly flight availability from Illinois to Oklahoma City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 19, 2026.

The most flights from USIL to OKC are scheduled on a Wednesday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

How much does it cost to fly round-trip from Illinois to Oklahoma City?

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

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Oklahoma City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Oklahoma City. Price data was last updated on June 13, 2026.

Travelers seeking maximum savings on their Illinois to Oklahoma City flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Oklahoma City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Oklahoma City from Illinois?

    Oklahoma City Will Rogers World (OKC) is the airport you will fly into if you book a flight from Illinois to Oklahoma City. It is only a 7.0 mi journey from Will Rogers World (OKC) to Oklahoma City’s city center.

  • How long is the flight from Illinois to Oklahoma City?

    Airlines like Southwest, Delta, and American Airlines fly from Illinois to Oklahoma City in about 2h. The time it takes to get you to your destination can typically vary by up to 5h 34m. There are 690 mi between Illinois and Oklahoma City. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Oklahoma City one-way?

    One-way options have recently been found by users for as low as $72 on Frontier. Other airlines that offer cheap prices include Southwest from $108 and American Airlines from $108 one-way.

  • What are the most popular routes from Illinois to Oklahoma City?

    While some choose either Lambert-St Louis - Oklahoma City Will Rogers World or Chicago Midway - Oklahoma City Will Rogers World, Chicago O'Hare Intl - Oklahoma City Will Rogers World is the most popular route from Illinois to Oklahoma City.

  • What are the most reliable airlines from Illinois to Oklahoma City?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Oklahoma City on time: Republic Airways (98%), United Airlines (87%), Air New Zealand (77%).

  • What are the cheapest flights from Illinois to Oklahoma City?

    The cheapest flight price from Illinois to Oklahoma City is $159. On average you can expect to pay $374. The most popular route, (Chicago O'Hare Intl - Oklahoma City Will Rogers World), can usually be booked for $301.

  • Can I find deals for flights from Illinois to Oklahoma City that include hotel bookings?

    Yes. In addition to deals on Illinois to Oklahoma City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Oklahoma City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Oklahoma City.

  • Can I find deals for business class flights from Illinois to Oklahoma City?

    Yes. Cheapflights offers flight deals from Illinois to Oklahoma City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Oklahoma City?

    Currently, October is the cheapest month in which you can book a flight from Illinois to Oklahoma City (average of $68). Flying from Illinois to Oklahoma City in March is currently the most expensive (average of $274). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Oklahoma City?

Book flights to Oklahoma City if you plan to visit one of these locations
Norman
Yukon
Moore
Edmond
Shawnee
Midwest City
Ada

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Alternative routes for Illinois to Oklahoma City

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Oklahoma City

Discover the top 4 airlines that operate flights from Illinois to Oklahoma City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$160Average$274FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$217Average$373FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$246Average$421FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$255Average$456FlexibilityNo cancel feeOn-time69%

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