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$44+ Cheap flights from Oklahoma 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 12/25. 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
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Cheap flight deals from Oklahoma to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Oklahoma (USOK) 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 to Illinois

Cheapest flights from Oklahoma to Illinois
Explore the most affordable flight options available from Oklahoma to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/96:05 pmDFW - ORD
Nonstop2h 32mSpirit Airlines
Thu 12/1210:38 amORD - DFW
Nonstop2h 42mSpirit Airlines
Deal found 11/19$94
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/176:45 amDFW - MDW
1 stop6h 24mFrontier
Wed 12/1812:10 pmMDW - DFW
Nonstop2h 53mFrontier
Deal found 11/19$94
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/67:48 pmDFW - ORD
1 stop4h 57mMultiple Airlines
Tue 12/107:33 amORD - DFW
Nonstop2h 40mMultiple Airlines
Deal found 11/20$96
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/57:38 pmDFW - ORD
Nonstop2h 29mFrontier
Mon 12/93:41 pmORD - DFW
Nonstop2h 42mFrontier
Deal found 11/19$98
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/98:56 amDFW - STL
Nonstop1h 45mFrontier
Wed 12/115:02 pmSTL - DFW
1 stop22h 38mFrontier
Deal found 11/19$120
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 Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/177:00 amDFW - MDW
1 stop6h 31mDelta
Tue 12/314:50 pmMDW - DFW
1 stop6h 02mDelta
Deal found 11/18$196
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2210:25 amDFW - ORD
1 stop3h 50mContour
Thu 12/2611:45 amORD - DFW
1 stop3h 55mContour
Deal found 11/20$209
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/145:33 pmXNA - ORD
Nonstop1h 53mAmerican Airlines
Thu 12/199:50 amORD - XNA
Nonstop2h 09mAmerican Airlines
Deal found 11/19$209
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/92:55 pmDFW - ORD
1 stop4h 50mDelta
Tue 12/107:05 amORD - DFW
1 stop7h 37mDelta
Deal found 11/19$213
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.
Tue 12/176:40 amDFW - STL
1 stop25h 33mMultiple Airlines
Tue 12/244:27 pmSTL - DFW
1 stop19h 27mMultiple Airlines
Deal found 11/19$216
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

Find flights from Oklahoma to Illinois within your budget

Customize your flight search to find flights from Oklahoma 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

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Mon 12/9

6:05 pm-8:37 pm

Nonstop2h 32m

Chicago O'Hare Intl

Thu 12/12

10:38 am-1:20 pm

Nonstop2h 42m

$94

DallasChicago

DFW - MDW

DFWMDW

Dallas/Fort Worth

Tue 12/17

6:45 am-1:09 pm

1 stop6h 24m

Chicago Midway

Wed 12/18

12:10 pm-3:03 pm

Nonstop2h 53m

$94

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Fri 12/6

7:48 pm-12:45 am

1 stop4h 57m

Chicago O'Hare Intl

Tue 12/10

7:33 am-10:13 am

Nonstop2h 40m

$96

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Thu 12/5

7:38 pm-10:07 pm

Nonstop2h 29m

Chicago O'Hare Intl

Mon 12/9

3:41 pm-6:23 pm

Nonstop2h 42m

$98

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

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Mon 12/9

8:56 am-10:41 am

Nonstop1h 45m

Lambert-St Louis

Wed 12/11

5:02 pm-3:40 pm

1 stop22h 38m

$120

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

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 1/14

6:00 am-8:25 am

Nonstop2h 25m

Chicago O'Hare Intl

Wed 1/22

3:22 pm-6:03 pm

Nonstop2h 41m

$157

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Fri 1/17

4:10 pm-6:35 pm

Nonstop2h 25m

Chicago O'Hare Intl

Sat 1/18

3:50 pm-6:36 pm

Nonstop2h 46m

$177

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 1/14

9:59 am-3:45 pm

1 stop5h 46m

Chicago O'Hare Intl

Wed 1/15

6:55 am-3:05 pm

1 stop8h 10m

$196

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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

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

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

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

Currently, September is the cheapest month in which you can book a flight from Oklahoma to Illinois (average of $232). Flying from Oklahoma 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 OK to IL?

Find hourly flight availability from Oklahoma 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.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oklahoma to Illinois as you normally would.

Weekly flight availability from Oklahoma to Illinois

Explore weekly flight availability from Oklahoma 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 USOK 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, United Airlines and Frontier from Oklahoma to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

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

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Comfort

8.1

Boarding

8.2

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 to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    One-way options have recently been found by users for as low as $44 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $45 and Contour from $77 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oklahoma 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 to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Oklahoma to Illinois (average of $232). Flying from Oklahoma 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

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Alternative routes for Oklahoma to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Oklahoma to Illinois

Discover the top 5 airlines that operate flights from Oklahoma 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$396FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$183Average$432FlexibilityNo cancel feeOn-time71%
DeltaCheapest$206Average$561FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$376FlexibilityNo cancel feeOn-time63%
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