HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
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

Discover tips and strategies to find the most affordable flight options for your journey from Oklahoma City (OKC) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

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 November 20, 2024.

This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/116:23 pmOKC - ORD
1 stop23h 05mFrontier
Wed 12/186:00 amORD - OKC
1 stop13h 32mFrontier
Deal found 11/19$138
This CheapOair deal was found by Cheapflights users on 11/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/157:47 pmOKC - STL
1 stop12h 26mFrontier
Tue 12/179:46 pmSTL - OKC
1 stop21h 46mFrontier
Deal found 11/18$147
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/126:23 pmOKC - MDW
1 stop17h 25mFrontier
Mon 12/167:15 amMDW - OKC
1 stop11h 28mFrontier
Deal found 11/19$218
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/113:05 pmOKC - STL
1 stop5h 46mUnited Airlines
Thu 12/128:30 amSTL - OKC
1 stop8h 01mUnited Airlines
Deal found 11/20$232
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Sat 12/145:15 amOKC - ORD
Nonstop2h 14mAmerican Airlines
Sun 12/158:35 pmORD - OKC
Nonstop2h 29mAmerican Airlines
Deal found 11/20$289
This Southwest deal was found by Cheapflights users on 11/20. 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.
Wed 12/116:30 amOKC - STL
Nonstop1h 25mSouthwest
Thu 12/128:15 pmSTL - OKC
Nonstop1h 35mSouthwest
Deal found 11/20$302
This Delta deal was found by Cheapflights users on 11/20. 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 12/167:10 amOKC - MDW
1 stop6h 21mDelta
Wed 12/186:00 amMDW - OKC
1 stop7h 34mDelta
Deal found 11/20$308
This Delta deal was found by Cheapflights users on 11/19. 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.
Tue 11/265:30 amOKC - ORD
1 stop6h 51mDelta
Thu 11/286:17 amORD - OKC
1 stop5h 58mDelta
Deal found 11/19$312
This Southwest deal was found by Cheapflights users on 11/19. 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 12/173:20 pmOKC - MDW
Nonstop1h 55mSouthwest
Tue 12/247:10 amMDW - OKC
1 stop8h 10mSouthwest
Deal found 11/19$313
This Southwest deal was found by Cheapflights users on 11/19. 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 12/177:10 amOKC - ORD
1 stop7h 15mSouthwest
Tue 12/247:30 amORD - OKC
2 stops7h 35mSouthwest
Deal found 11/19$313
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Thu 12/197:35 amOKC - ORD
Nonstop2h 19mUnited Airlines
Sun 12/297:42 pmORD - OKC
Nonstop2h 39mUnited Airlines
Deal found 11/19$321
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Thu 12/55:00 amOKC - PIA
2 stops9h 05mUnited Airlines
Mon 12/95:35 pmPIA - OKC
1 stop4h 32mUnited Airlines
Deal found 11/20$373

Find flights from Oklahoma City to Illinois within your budget

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Sat 1/4

11:29 am-11:10 am

1 stop23h 41m

Lambert-St Louis

Sat 1/11

6:46 pm-7:12 pm

1 stop24h 26m

$118

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Mon 1/27

8:16 pm-12:17 am

1 stop28h 01m

Chicago Midway

Thu 1/30

12:43 pm-5:23 pm

1 stop28h 40m

$118

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Wed 12/11

6:23 pm-5:28 pm

1 stop23h 05m

Chicago O'Hare Intl

Wed 12/18

6:00 am-7:32 pm

1 stop13h 32m

$138

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 12/11

3:05 pm-8:51 pm

1 stop5h 46m

Lambert-St Louis

Thu 12/12

8:30 am-4:31 pm

1 stop8h 01m

$232

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Sat 12/14

5:15 am-7:29 am

Nonstop2h 14m

Chicago O'Hare Intl

Sun 12/15

8:35 pm-11:04 pm

Nonstop2h 29m

$289

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 12/11

6:30 am-7:55 am

Nonstop1h 25m

Lambert-St Louis

Thu 12/12

8:15 pm-9:50 pm

Nonstop1h 35m

$302

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Tue 12/31

11:31 am-4:15 pm

1 stop4h 44m

Chicago O'Hare Intl

Wed 1/1

7:05 am-1:34 pm

1 stop6h 29m

$312

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Tue 12/17

3:20 pm-5:15 pm

Nonstop1h 55m

Chicago Midway

Tue 12/24

7:10 am-3:20 pm

1 stop8h 10m

$313

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Tue 12/17

7:10 am-2:25 pm

1 stop7h 15m

Chicago O'Hare Intl

Tue 12/24

7:30 am-3:05 pm

2 stops7h 35m

$313

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Thu 12/19

7:35 am-9:54 am

Nonstop2h 19m

Chicago O'Hare Intl

Sun 12/29

7:42 pm-10:21 pm

Nonstop2h 39m

$321

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 34 results
1
2
3
4

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.

Travel insights for flights from Oklahoma City to Illinois

Get recent, data-driven insights about flights from Oklahoma City to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $232). Flying from Oklahoma City to Illinois in June is currently the most expensive (average of $308). 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 November 20, 2024.

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 November 20, 2024.

The most flights from OKC to USIL are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 November 20, 2024.
Read reviews from past customers who have flown American Airlines, Frontier 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.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,811 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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?

    $59 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $125 and $134, 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 Air Canada (97%), Emirates (93%) 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 $159. While the most popular route (Oklahoma City Will Rogers World - Chicago O'Hare Intl) can be booked for $289 on average our data indicates $1,066 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, September is the cheapest month in which you can book a flight from Oklahoma City to Illinois (average of $232). Flying from Oklahoma City to Illinois in June is currently the most expensive (average of $308). 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 Newark flights
Dallas/Fort Worth to Orlando flights
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
Dallas/Fort Worth to O'Hare Intl flights
Dallas/Fort Worth to Seattle flights
Dallas/Fort Worth to Denver flights
Dallas/Fort Worth to Fort Lauderdale flights
Dallas/Fort Worth to Miami flights
Dallas/Fort Worth to Baltimore flights
Dallas/Fort Worth to Dulles Intl flights
Dallas/Fort Worth to San Francisco flights
Dallas/Fort Worth to Reagan-National flights
Dallas/Fort Worth to Ontario flights
Dallas/Fort Worth to Midway flights
Dallas/Fort Worth to Atlanta flights
Dallas/Fort Worth to Boston flights
Dallas/Fort Worth to Sky Harbor Intl flights
Dallas/Fort Worth to Salt Lake City flights
Dallas/Fort Worth to Tampa flights
Dallas/Fort Worth to Charlotte flights
Dallas/Fort Worth to Burbank flights
Dallas/Fort Worth to San Diego flights
Dallas/Fort Worth to Hobby flights
Dallas/Fort Worth to San Jose flights
Dallas/Fort Worth to Honolulu flights
Dallas/Fort Worth to Santa Ana flights
Dallas/Fort Worth to Philadelphia flights
Dallas/Fort Worth to New Orleans flights
Dallas/Fort Worth to George Bush Intcntl flights
Dallas/Fort Worth to Detroit flights
Dallas/Fort Worth to Minneapolis flights
Dallas/Fort Worth to Raleigh flights
Dallas/Fort Worth to Portland flights
Dallas/Fort Worth to Sacramento flights
Dallas/Fort Worth to Kansas City flights
Dallas/Fort Worth to Nashville flights
Dallas/Fort Worth to Oakland flights
Oklahoma City to Las Vegas flights
Dallas/Fort Worth to Cincinnati flights
Dallas/Fort Worth to Cleveland flights
Dallas/Fort Worth to Indianapolis flights
Dallas/Fort Worth to El Paso flights
Oklahoma City to LaGuardia flights
Dallas/Fort Worth to Kahului flights
Dallas/Fort Worth to St. Louis flights
Dallas/Fort Worth to Atlantic City flights
Dallas/Fort Worth to Milwaukee flights

Top 5 airlines flying from Oklahoma City to Illinois

Discover the top 5 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$168FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$172Average$385FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$208Average$478FlexibilityNo cancel feeOn-time71%
DeltaCheapest$257Average$533FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$293Average$363FlexibilityNo 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.
View all available airlines