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$54+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
OKC — ORD
ene. 25 — feb. 11
sáb. 1/25
sáb. 2/1
1 adult, Economy
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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 enero 20, 2025.

Round-trip from

$113
(Flightnetwork)

One-way from

$54
(Frontier)
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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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 enero 20, 2025.

This Flightnetwork deal was found by Cheapflights users on 1/19. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/36:11 pmOKC - ORD
1 stop10h 49mFrontier
lun. 3/106:30 amORD - OKC
1 stop12h 57mFrontier
Deal found 1/19$113
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/48:29 pmOKC - MDW
1 stop27h 48mFrontier
jue. 3/66:40 amMDW - OKC
1 stop12h 47mFrontier
Deal found 1/20$119
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/202:21 pmOKC - STL
1 stop18h 55mFrontier
jue. 2/2711:08 pmSTL - OKC
1 stop18h 13mFrontier
Deal found 1/20$144
This American Airlines deal was found by Cheapflights users on 1/19. 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.
mar. 2/45:17 amOKC - MLI
1 stop5h 36mAmerican Airlines
sáb. 2/812:55 pmMLI - OKC
1 stop4h 19mAmerican Airlines
Deal found 1/19$199
This United Airlines deal was found by Cheapflights users on 1/19. 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.
mar. 2/42:02 pmOKC - MLI
2 stops7h 07mUnited Airlines
sáb. 2/83:59 pmMLI - OKC
2 stops7h 14mUnited Airlines
Deal found 1/19$209
This Delta deal was found by Cheapflights users on 1/18. 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.
sáb. 1/2511:27 amOKC - STL
1 stop6h 35mDelta
lun. 1/275:00 pmSTL - OKC
1 stop6h 55mDelta
Deal found 1/18$247
This Delta deal was found by Cheapflights users on 1/19. 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.
sáb. 3/14:00 pmOKC - MLI
1 stop6h 26mDelta
dom. 3/25:05 pmMLI - OKC
1 stop6h 46mDelta
Deal found 1/19$249
This Southwest deal was found by Cheapflights users on 1/19. 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.
mar. 2/185:40 amOKC - STL
1 stop8h 05mSouthwest
jue. 2/2010:40 amSTL - OKC
2 stops8h 20mSouthwest
Deal found 1/19$252
This American Airlines deal was found by Cheapflights users on 1/19. 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.
mié. 2/125:17 amOKC - ORD
Nonstop2h 13mAmerican Airlines
mié. 2/122:50 pmORD - OKC
Nonstop2h 24mAmerican Airlines
Deal found 1/19$283
This Delta deal was found by Cheapflights users on 1/20. 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.
sáb. 2/158:05 amOKC - MDW
1 stop6h 48mDelta
mar. 2/181:26 pmMDW - OKC
1 stop7h 23mDelta
Deal found 1/20$303
This Delta deal was found by Cheapflights users on 1/19. 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.
mié. 2/127:15 amOKC - ORD
1 stop4h 15mDelta
mié. 2/125:10 pmORD - OKC
1 stop6h 41mDelta
Deal found 1/19$303
This United Airlines deal was found by Cheapflights users on 1/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/256:00 amOKC - STL
2 stops8h 14mUnited Airlines
lun. 1/272:55 pmSTL - OKC
1 stop7h 19mUnited Airlines
Deal found 1/18$312

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 2,558,603 searches. Data last updated enero 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

lun. 3/3

6:11 pm-5:00 am

1 stop10h 49m

Chicago O'Hare Intl

lun. 3/10

6:30 am-7:27 pm

1 stop12h 57m

$113

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

mar. 3/4

8:29 pm-12:17 am

1 stop27h 48m

Chicago Midway

jue. 3/6

6:40 am-7:27 pm

1 stop12h 47m

$119

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

jue. 2/20

2:21 pm-9:16 am

1 stop18h 55m

Lambert-St Louis

jue. 2/27

11:08 pm-5:21 pm

1 stop18h 13m

$144

Oklahoma CityMoline

OKC - MLI

OKCMLI

Oklahoma City Will Rogers World

mar. 2/4

5:17 am-10:53 am

1 stop5h 36m

Moline Quad-City

sáb. 2/8

12:55 pm-5:14 pm

1 stop4h 19m

$199

Oklahoma CityMoline

OKC - MLI

OKCMLI

Oklahoma City Will Rogers World

mar. 2/4

2:02 pm-9:09 pm

2 stops7h 07m

Moline Quad-City

sáb. 2/8

3:59 pm-11:13 pm

2 stops7h 14m

$209

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

sáb. 1/25

11:27 am-6:02 pm

1 stop6h 35m

Lambert-St Louis

lun. 1/27

5:00 pm-11:55 pm

1 stop6h 55m

$247

Oklahoma CityMoline

OKC - MLI

OKCMLI

Oklahoma City Will Rogers World

sáb. 3/1

4:00 pm-10:26 pm

1 stop6h 26m

Moline Quad-City

dom. 3/2

5:05 pm-11:51 pm

1 stop6h 46m

$249

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

mar. 2/18

5:40 am-1:45 pm

1 stop8h 05m

Lambert-St Louis

jue. 2/20

10:40 am-7:00 pm

2 stops8h 20m

$252

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

mié. 2/12

5:17 am-7:30 am

Nonstop2h 13m

Chicago O'Hare Intl

mié. 2/12

2:50 pm-5:14 pm

Nonstop2h 24m

$283

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

sáb. 2/15

8:05 am-2:53 pm

1 stop6h 48m

Chicago Midway

mar. 2/18

1:26 pm-8:49 pm

1 stop7h 23m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 34 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.

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, 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 $320). 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 enero 20, 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 enero 20, 2025.

The most flights from OKC to USIL are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 enero 20, 2025.
Read reviews from past customers who have flown American Airlines, Delta and United Airlines 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
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    $54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Delta and Southwest, with prices starting from $124 and $129, 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 (93%), Republic Airways (93%) or SkyWest Airlines (86%) 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 $153. While the most popular route (Oklahoma City Will Rogers World - Chicago O'Hare Intl) can be booked for $160 on average our data indicates $1,145 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 $320). 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 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 2,558,603 searches. Data last updated enero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$175FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$177Average$403FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$208Average$474FlexibilityNo cancel feeOn-time71%
DeltaCheapest$257Average$533FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$293Average$363FlexibilityNo cancel feeOn-time63%
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