HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$69+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oklahoma City to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$216
(American Airlines)

One-way from

$69
(Southwest)

Popular in

March

Cheapest in

February

Average price

$363

Good round-trip deal

$306 or less

Good one-way deal

$181 or less
From Oklahoma City Will Rogers World to Illinois
Search Deals
One-way flight from Oklahoma City Will Rogers World to Illinois
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Oklahoma City Will Rogers World to Illinois.
Search Deals
Price to beat on a one-way flight from Oklahoma City Will Rogers World to Illinois.
Search Deals

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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 8/132:02 pmOKC - ORD
Nonstop2h 16mAmerican Airlines
Sat 8/166:53 amORD - OKC
Nonstop2h 14mAmerican Airlines
Deal found 6/12$216
This Southwest deal was found by Cheapflights users on 6/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:50 amOKC - MDW
Nonstop1h 55mSouthwest
Tue 10/2810:15 amMDW - OKC
1 stop8h 35mSouthwest
Deal found 6/12$222
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 pmOKC - ORD
1 stop6h 10mFrontier
Mon 8/2511:44 amORD - OKC
1 stop7h 57mFrontier
Deal found 6/11$223
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:50 amOKC - ORD
1 stop5h 26mDelta
Mon 8/115:30 pmORD - OKC
1 stop6h 29mDelta
Deal found 6/11$230
This Southwest deal was found by Cheapflights users on 6/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:05 amOKC - ORD
1 stop7h 20mSouthwest
Fri 9/196:15 amORD - OKC
1 stop12h 55mSouthwest
Deal found 6/12$237
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:31 amOKC - STL
1 stop7h 03mDelta
Tue 7/155:23 pmSTL - OKC
1 stop6h 35mDelta
Deal found 6/11$239
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:18 pmOKC - STL
1 stop5h 16mAmerican Airlines
Wed 1/144:07 pmSTL - OKC
1 stop4h 29mAmerican Airlines
Deal found 6/9$244
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/316:15 pmOKC - STL
Nonstop1h 25mSouthwest
Mon 8/410:45 pmSTL - OKC
Nonstop1h 30mSouthwest
Deal found 6/10$249
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/49:40 amOKC - ORD
Nonstop2h 18mUnited Airlines
Fri 8/89:15 amORD - OKC
Nonstop2h 39mUnited Airlines
Deal found 6/9$255
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:17 pmOKC - MDW
1 stop19h 20mAllegiant Air
Fri 6/279:12 amMDW - OKC
1 stop23h 30mAllegiant Air
Deal found 6/10$257
This Frontier deal was found by Cheapflights users on 6/10. 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.
Fri 7/46:05 amOKC - MDW
1 stop5h 35mFrontier
Mon 7/712:35 pmMDW - OKC
1 stop9h 42mFrontier
Deal found 6/10$260
This American Airlines deal was found by Cheapflights users on 6/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/181:54 pmOKC - MLI
1 stop4h 07mAmerican Airlines
Tue 6/244:20 pmMLI - OKC
1 stop7h 38mAmerican Airlines
Deal found 6/9$284

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 June 12, 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

Wed 8/13

2:02 pm-4:18 pm

Nonstop2h 16m

Chicago O'Hare Intl

Sat 8/16

6:53 am-9:07 am

Nonstop2h 14m

$216

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Fri 10/24

6:50 am-8:45 am

Nonstop1h 55m

Chicago Midway

Tue 10/28

10:15 am-6:50 pm

1 stop8h 35m

$222

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Mon 8/18

6:00 pm-12:10 am

1 stop6h 10m

Chicago O'Hare Intl

Mon 8/25

11:44 am-7:41 pm

1 stop7h 57m

$223

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Mon 8/11

6:50 am-12:16 pm

1 stop5h 26m

Chicago O'Hare Intl

Mon 8/11

5:30 pm-11:59 pm

1 stop6h 29m

$230

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Tue 9/16

7:05 am-2:25 pm

1 stop7h 20m

Chicago O'Hare Intl

Fri 9/19

6:15 am-7:10 pm

1 stop12h 55m

$237

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 7/9

5:31 am-12:34 pm

1 stop7h 03m

Lambert-St Louis

Tue 7/15

5:23 pm-11:58 pm

1 stop6h 35m

$239

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Thu 7/31

6:15 pm-7:40 pm

Nonstop1h 25m

Lambert-St Louis

Mon 8/4

10:45 pm-12:15 am

Nonstop1h 30m

$249

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Mon 8/4

9:40 am-11:58 am

Nonstop2h 18m

Chicago O'Hare Intl

Fri 8/8

9:15 am-11:54 am

Nonstop2h 39m

$255

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Tue 6/24

8:17 pm-3:37 pm

1 stop19h 20m

Chicago Midway

Fri 6/27

9:12 am-8:42 am

1 stop23h 30m

$257

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Fri 7/4

6:05 am-11:40 am

1 stop5h 35m

Chicago Midway

Mon 7/7

12:35 pm-10:17 pm

1 stop9h 42m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 46 results
1
2
3
...
5

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 June 12, 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 June 12, 2025.

The most flights from OKC to USIL are scheduled on a Monday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Oklahoma City to Illinois. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
725 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    $69 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $79 and $99, 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 Emirates (92%), Republic Airways (91%) or Japan Airlines (88%) 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 $157 on average our data indicates $3,368 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Oklahoma City to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to Seattle flights
Dallas/Fort Worth to Newark flights
Dallas/Fort Worth to O'Hare Intl flights
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
Dallas/Fort Worth to Miami flights
Dallas/Fort Worth to Orlando flights
Dallas/Fort Worth to Denver flights
Dallas/Fort Worth to Baltimore flights
Dallas/Fort Worth to Fort Lauderdale flights
Dallas/Fort Worth to San Francisco flights
Dallas/Fort Worth to Boston flights
Dallas/Fort Worth to Midway flights
Dallas/Fort Worth to Reagan-National flights
Dallas/Fort Worth to Burbank flights
Dallas/Fort Worth to Salt Lake City flights
Dallas/Fort Worth to Philadelphia flights
Dallas/Fort Worth to San Diego flights
Dallas/Fort Worth to Portland flights
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to Santa Ana flights
Dallas/Fort Worth to Honolulu flights
Dallas/Fort Worth to Atlanta flights
Dallas/Fort Worth to Minneapolis flights
Dallas/Fort Worth to Hobby flights
Dallas/Fort Worth to Tampa flights
Dallas/Fort Worth to San Jose flights
Dallas/Fort Worth to George Bush Intcntl flights
Dallas/Fort Worth to Oakland flights
Dallas/Fort Worth to Cleveland flights
Dallas/Fort Worth to Detroit flights
Dallas/Fort Worth to Nashville flights
Dallas/Fort Worth to Raleigh flights
Dallas/Fort Worth to Sky Harbor Intl flights
Dallas/Fort Worth to Cincinnati flights
Dallas/Fort Worth to New Orleans flights
Dallas/Fort Worth to Charlotte flights
Dallas/Fort Worth to Colorado Springs flights
Oklahoma City to Seattle flights
Dallas/Fort Worth to Ontario flights
Dallas/Fort Worth to El Paso flights
Dallas/Fort Worth to Pittsburgh flights
Dallas/Fort Worth to Buffalo flights
Dallas/Fort Worth to Pensacola flights
Dallas/Fort Worth to Anchorage flights
Dallas/Fort Worth to Charleston flights
Oklahoma City to Denver flights
Dallas/Fort Worth to Omaha flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$193FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$208Average$393FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$259Average$414FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$303Average$364FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.