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Oklahoma City

$49+ Cheap flights from Illinois to Oklahoma City (OKC)

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OKC
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Illinois to Oklahoma City

Cheapest flights from Illinois to Oklahoma City
Explore the most affordable flight options available from Illinois to Oklahoma City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Southwest deal was found by Cheapflights users on 1/26. 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 2/247:55 pm
STL
-
OKC
Nonstop1h 40m
Southwest
Tue 3/33:45 pm
OKC
-
STL
Nonstop1h 25m
Southwest
Deal found 1/26$97
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Thu 2/2610:11 pm
STL
-
OKC
1 stop12h 48m
Frontier
Fri 2/274:52 pm
OKC
-
STL
1 stop13h 59m
Frontier
Deal found 1/25$135
This Southwest deal was found by Cheapflights users on 1/27. 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 3/37:55 pm
STL
-
OKC
Nonstop1h 40m
Southwest
Thu 3/55:30 am
OKC
-
STL
1 stop4h 05m
Southwest
Deal found 1/27$144
This Frontier deal was found by Cheapflights users on 1/25. 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 4/3010:55 am
ORD
-
OKC
1 stop8h 53m
Frontier
Mon 5/43:14 pm
OKC
-
ORD
1 stop7h 25m
Frontier
Deal found 1/25$160
This American Airlines deal was found by Cheapflights users on 1/24. 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 2/253:00 pm
ORD
-
OKC
Nonstop2h 26m
American Airlines
Wed 2/256:37 pm
OKC
-
ORD
1 stop4h 59m
American Airlines
Deal found 1/24$173
This Frontier deal was found by Cheapflights users on 1/25. 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 4/2310:55 am
ORD
-
OKC
1 stop8h 53m
Frontier
Mon 4/275:30 pm
OKC
-
ORD
1 stop13h 17m
Frontier
Deal found 1/25$181
This Southwest deal was found by Cheapflights users on 1/27. 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.
Mon 2/232:55 pm
STL
-
OKC
1 stop6h 50m
Southwest
Sat 2/284:30 pm
OKC
-
STL
Nonstop1h 25m
Southwest
Deal found 1/27$181
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Thu 3/54:16 pm
ORD
-
OKC
1 stop27h 29m
Frontier
Mon 3/98:30 pm
OKC
-
ORD
2 stops18h 45m
Frontier
Deal found 1/26$184
This Delta deal was found by Cheapflights users on 1/27. 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 2/236:47 pm
STL
-
OKC
1 stop5h 07m
Delta
Sat 2/287:00 am
OKC
-
STL
1 stop7h 54m
Delta
Deal found 1/27$191
This Frontier deal was found by Cheapflights users on 1/26. 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 4/2410:55 am
ORD
-
OKC
1 stop8h 53m
Frontier
Mon 4/273:14 pm
OKC
-
ORD
1 stop7h 25m
Frontier
Deal found 1/26$195
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Mon 2/236:18 pm
STL
-
OKC
1 stop4h 26m
American Airlines
Sat 2/286:00 am
OKC
-
STL
2 stops7h 50m
American Airlines
Deal found 1/27$196
This Trip.com deal was found by Cheapflights users on 1/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/85:40 am
ORD
-
OKC
1 stop11h 42m
Frontier
Thu 2/127:12 pm
OKC
-
ORD
1 stop22h 14m
Frontier
Deal found 1/25$218

Find flight deals from Illinois to Oklahoma City

Keep the following information in mind while searching for Illinois to Oklahoma City flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

January

Cheapest in

October

Average price

$457

Good round-trip deal

$291 or less

Good one-way deal

$151 or less
Provider with most accurate pricing for Chicago (CHI)-Oklahoma City Will Rogers World flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Oklahoma City Will Rogers World flights.
Search Deals
From Illinois to Oklahoma City Will Rogers World
Search Deals
One-way flight from Illinois to Oklahoma City Will Rogers World
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Oklahoma City Will Rogers World.
Search Deals
Price to beat on a one-way flight from Illinois to Oklahoma City Will Rogers World.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Oklahoma City 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 January 27, 2026.
Use the filters below to find and compare flights from Illinois to Oklahoma City that are best for you.

Fly from

Illinois

Fly to

Oklahoma City

Route

Depart

Return

Price

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Tue 2/24

7:55 pm-9:35 pm

Nonstop1h 40m

Oklahoma City Will Rogers World

Tue 3/3

3:45 pm-5:10 pm

Nonstop1h 25m

$97

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Wed 2/25

7:55 pm-9:35 pm

Nonstop1h 40m

Oklahoma City Will Rogers World

Wed 3/4

6:00 am-7:35 am

Nonstop1h 35m

$97

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Thu 2/26

10:11 pm-10:59 am

1 stop12h 48m

Oklahoma City Will Rogers World

Fri 2/27

4:52 pm-6:51 am

1 stop13h 59m

$135

St. LouisOklahoma City

STL - OKC

STLOKC

Lambert-St Louis

Tue 3/3

7:55 pm-9:35 pm

Nonstop1h 40m

Oklahoma City Will Rogers World

Thu 3/5

5:30 am-9:35 am

1 stop4h 05m

$144

ChicagoOklahoma City

ORD - OKC

ORDOKC

Chicago O'Hare Intl

Sat 2/21

8:05 am-7:45 pm

2 stops35h 40m

Oklahoma City Will Rogers World

Mon 2/23

4:52 pm-10:39 pm

1 stop5h 47m

$236

ChicagoOklahoma City

MDW - OKC

MDWOKC

Chicago Midway

Sat 3/14

9:30 pm-11:45 pm

Nonstop2h 15m

Oklahoma City Will Rogers World

Sat 3/21

5:00 am-6:50 am

Nonstop1h 50m

$236

ChicagoOklahoma City

ORD - OKC

ORDOKC

Chicago O'Hare Intl

Thu 3/5

4:16 pm-7:45 pm

1 stop27h 29m

Oklahoma City Will Rogers World

Sun 3/8

3:19 pm-10:39 pm

1 stop7h 20m

$249

PeoriaOklahoma City

PIA - OKC

PIAOKC

Greater Peoria

Mon 2/23

5:23 pm-10:44 pm

1 stop5h 21m

Oklahoma City Will Rogers World

Sat 2/28

5:33 pm-11:25 pm

1 stop5h 52m

$269

PeoriaOklahoma City

PIA - OKC

PIAOKC

Greater Peoria

Tue 2/24

3:10 pm-9:25 pm

1 stop6h 15m

Oklahoma City Will Rogers World

Sat 2/28

5:33 pm-11:25 pm

1 stop5h 52m

$269

PeoriaOklahoma City

PIA - OKC

PIAOKC

Greater Peoria

Mon 2/23

5:45 pm-10:30 pm

1 stop4h 45m

Oklahoma City Will Rogers World

Sat 2/28

5:00 am-12:43 pm

2 stops7h 43m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 58 results
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Best time to book a flight from Illinois to Oklahoma City

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

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

Currently, February is the cheapest month in which you can book a flight from Illinois to Oklahoma City (average of $150). Flying from Illinois to Oklahoma City in March is currently the most expensive (average of $262). 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 IL to OKC?

Find hourly flight availability from Illinois to Oklahoma City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.

When flying from Illinois to Oklahoma City, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 26% versus a flight in the evening.

What is the cheapest day to fly from Illinois to Oklahoma City?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Oklahoma City. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Illinois to Oklahoma City flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Illinois to Oklahoma City

Explore weekly flight availability from Illinois to Oklahoma City. 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 January 27, 2026.

The most flights from USIL to OKC are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Related info for your journey

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

    Oklahoma City Will Rogers World (OKC) is the airport you will fly into if you book a flight from Illinois to Oklahoma City. It is only a 7.0 mi journey from Will Rogers World (OKC) to Oklahoma City’s city center.

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

    Airlines like Southwest, Frontier, and American Airlines fly from Illinois to Oklahoma City in about 1h 40m. The time it takes to get you to your destination can typically vary by up to 34h. There are 461 mi between Illinois and Oklahoma City. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    One-way options have recently been found by users for as low as $75 on Frontier. Other airlines that offer cheap prices include Southwest from $108 and American Airlines from $108 one-way.

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

    While some choose either Chicago Midway - Oklahoma City Will Rogers World or Lambert-St Louis - Oklahoma City Will Rogers World, Chicago O'Hare Intl - Oklahoma City Will Rogers World is the most popular route from Illinois to Oklahoma City.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Oklahoma City on time: Envoy Air (89%), Republic Airways (81%), United Airlines (77%).

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

    The cheapest flight price from Illinois to Oklahoma City is $126. On average you can expect to pay $295. The most popular route, (Chicago O'Hare Intl - Oklahoma City Will Rogers World), can usually be booked for $231.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Illinois to Oklahoma City (average of $150). Flying from Illinois to Oklahoma City in March is currently the most expensive (average of $262). 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

Traveling to a place near Oklahoma City?

Book flights to Oklahoma City if you plan to visit one of these locations
Norman
Yukon
Moore
Edmond
Shawnee
Ada
Midwest City

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Alternative routes for Illinois to Oklahoma City

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

Discover the top 4 airlines that operate flights from Illinois to Oklahoma City. 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$141Average$271FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$163Average$415FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$242Average$420FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$258Average$353FlexibilityNo cancel feeOn-time63%

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