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$59+ Cheap flights from Oklahoma City (OKC) to Illinois

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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Oklahoma City to Illinois

Keep the following information in mind while searching for Oklahoma City to Illinois flight deals. Data was last updated septiembre 11, 2025.

Round-trip from

$117
(American Airlines)

One-way from

$59
(Southwest)

Popular in

March

Cheapest in

September

Average price

$316

Good round-trip deal

$331 or less

Good one-way deal

$221 or less
From Oklahoma City Will Rogers World to Illinois
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One-way flight from Oklahoma City Will Rogers World to Illinois
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Highest demand for flights based on searches. 1% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Oklahoma City Will Rogers World to Illinois.
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Price to beat on a one-way flight from Oklahoma City Will Rogers World to Illinois.
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Find flight deals from Oklahoma City to Illinois

Cheapest flights from Oklahoma City to Illinois
Explore the most affordable flight options available from Oklahoma City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/45:00 pmOKC - ORD
Nonstop2h 25mAmerican Airlines
sáb. 11/87:19 pmORD - OKC
Nonstop2h 30mAmerican Airlines
Deal found 9/10$117
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/112:28 pmOKC - ORD
Nonstop2h 19mUnited Airlines
jue. 10/24:45 pmORD - OKC
Nonstop2h 26mUnited Airlines
Deal found 9/10$133
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/255:33 pmOKC - ORD
1 stop6h 20mFrontier
lun. 10/2710:51 amORD - OKC
1 stop7h 43mFrontier
Deal found 9/10$144
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/1110:30 amOKC - ORD
Nonstop2h 19mUnited Airlines
dom. 10/129:20 amORD - OKC
Nonstop2h 26mUnited Airlines
Deal found 9/11$145
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/232:03 pmOKC - ORD
Nonstop2h 18mAmerican Airlines
lun. 10/277:10 amORD - OKC
Nonstop2h 20mAmerican Airlines
Deal found 9/11$149
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/237:13 pmOKC - STL
1 stop13h 54mFrontier
lun. 10/277:52 pmSTL - OKC
1 stop23h 08mFrontier
Deal found 9/10$153
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/247:21 pmOKC - ORD
1 stop5h 38mFrontier
lun. 10/275:05 amORD - OKC
1 stop11h 48mFrontier
Deal found 9/10$154
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/238:00 amOKC - ORD
1 stop13h 28mFrontier
sáb. 9/278:25 amORD - OKC
1 stop13h 02mFrontier
Deal found 9/8$155
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/237:13 pmOKC - ORD
1 stop14h 23mFrontier
lun. 10/2710:51 amORD - OKC
1 stop7h 43mFrontier
Deal found 9/9$157
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/36:05 amOKC - ORD
1 stop17h 54mFrontier
dom. 10/51:03 pmORD - OKC
1 stop24h 06mFrontier
Deal found 9/10$158
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/247:21 pmOKC - STL
1 stop13h 46mFrontier
lun. 10/277:52 pmSTL - OKC
1 stop23h 08mFrontier
Deal found 9/10$159
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/244:07 pmOKC - ORD
Nonstop2h 19mUnited Airlines
mié. 10/291:00 pmORD - OKC
Nonstop2h 31mUnited Airlines
Deal found 9/10$160

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oklahoma City to Illinois 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Oklahoma City to Illinois that are best for you.

Fly from

Oklahoma City

Fly to

Illinois

Route

Depart

Return

Price

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

lun. 12/8

4:27 pm-6:40 pm

Nonstop2h 13m

Chicago O'Hare Intl

mié. 12/10

9:10 am-11:44 am

Nonstop2h 34m

$133

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

sáb. 10/11

10:30 am-12:49 pm

Nonstop2h 19m

Chicago O'Hare Intl

lun. 10/13

9:20 am-11:46 am

Nonstop2h 26m

$133

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

sáb. 10/11

10:30 am-12:49 pm

Nonstop2h 19m

Chicago O'Hare Intl

dom. 10/12

9:20 am-11:46 am

Nonstop2h 26m

$145

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

vie. 10/17

12:28 pm-2:47 pm

Nonstop2h 19m

Chicago O'Hare Intl

dom. 10/19

9:20 am-11:46 am

Nonstop2h 26m

$149

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

mar. 11/4

7:45 pm-12:12 am

1 stop28h 27m

Chicago O'Hare Intl

mar. 11/11

7:15 am-7:00 pm

1 stop11h 45m

$157

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

mié. 10/8

4:07 pm-6:26 pm

Nonstop2h 19m

Chicago O'Hare Intl

mié. 10/15

1:00 pm-3:26 pm

Nonstop2h 26m

$158

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

vie. 10/24

4:07 pm-6:26 pm

Nonstop2h 19m

Chicago O'Hare Intl

mié. 10/29

1:00 pm-3:31 pm

Nonstop2h 31m

$160

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

mié. 10/8

2:55 pm-4:50 pm

Nonstop1h 55m

Chicago Midway

mié. 10/15

7:40 am-9:40 am

Nonstop2h 00m

$167

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

mar. 12/16

3:20 pm-5:15 pm

Nonstop1h 55m

Chicago Midway

mar. 1/6

8:55 am-5:00 pm

1 stop8h 05m

$174

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

sáb. 10/11

5:33 pm-11:53 pm

1 stop6h 20m

Chicago O'Hare Intl

dom. 10/12

6:50 am-7:01 pm

1 stop12h 11m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from Oklahoma City to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Oklahoma City 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 Oklahoma City to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $245). Flying from Oklahoma City to Illinois in March is currently the most expensive (average of $321). 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 OKC to IL?

Find hourly flight availability from Oklahoma City to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

When flying from Oklahoma City to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Oklahoma City to Illinois

Explore weekly flight availability from Oklahoma City to Illinois. 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 septiembre 11, 2025.

The most flights from OKC to USIL are scheduled on a Tuesday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated septiembre 11, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Oklahoma City to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Oklahoma City to Illinois. 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 from for flights from Oklahoma City to Illinois?

    Most people fly from Oklahoma City Will Rogers World (OKC) if they book a flight from Oklahoma City to Illinois. Oklahoma City Will Rogers World is conveniently located just 7.0 mi from Oklahoma City’s city center.

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

    There are many flights that can get you from Oklahoma City to Illinois in 1h 55m. Fly via United Airlines, Frontier, or Southwest to get the fastest option. Airlines will cover a distance of 690 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $59 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Frontier, with prices starting from $59 and $87, respectively.

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

    When deciding which route to take from Oklahoma City to Illinois consider Oklahoma City Will Rogers World - Chicago O'Hare Intl, Oklahoma City Will Rogers World - Chicago Midway or Oklahoma City Will Rogers World - Lambert-St Louis as they are the most popular.

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

    No one likes to see their flight delayed. When booking a flight from Oklahoma City to Illinois consider choosing Lufthansa (72%), Emirates (71%) or Air New Zealand (71%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $131. While the most popular route (Oklahoma City Will Rogers World - Chicago O'Hare Intl) can be booked for $133 on average, our data indicates $1,084 when flying from Oklahoma City to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oklahoma City to Illinois 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 Oklahoma City to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $245). Flying from Oklahoma City to Illinois in March is currently the most expensive (average of $321). 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.

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Alternative routes for Oklahoma City to Illinois

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

Discover the top 4 airlines that operate flights from Oklahoma City to Illinois. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$195FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$233Average$353FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$241Average$365FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$243Average$423FlexibilityNo cancel feeOn-time69%

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