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Cheap flights from Oklahoma City to Illinois from $89

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oklahoma City to Illinois departing on 10/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Oklahoma City to Illinois

Cheap round-trip flights

Southwest Logo
3:15 pm - 9:40 pmOKC-STL
6h 25m1 stop
Southwest Logo
1:45 pm - 3:10 pmSTL-OKC
1h 25mnonstop
$187Southwest
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Tue, Aug 26 - Sat, Aug 30
American Airlines Logo
2:59 pm - 8:22 pmOKC-STL
5h 23m1 stop
American Airlines Logo
9:23 am - 2:09 pmSTL-OKC
4h 46m1 stop
$192American Airlines
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Wed, Aug 20 - Fri, Aug 22
American Airlines Logo
5:00 am - 11:35 amOKC-STL
6h 35m2 stops
American Airlines Logo
5:18 am - 9:40 amSTL-OKC
4h 22m1 stop
$197American Airlines
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Wed, Sep 3 - Fri, Sep 5
Southwest Logo
1:55 pm - 7:55 pmOKC-STL
6h 00m2 stops
Southwest Logo
4:45 pm - 9:40 pmSTL-OKC
4h 55m1 stop
$202Southwest
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Tue, Aug 26 - Sat, Aug 30
Frontier Logo
8:00 am - 9:28 pmOKC-ORD
13h 28m1 stop
Frontier Logo
8:25 am - 9:27 pmORD-OKC
13h 02m1 stop
$205Frontier
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Tue, Sep 9 - Sat, Sep 13
Frontier Logo
7:48 pm - 9:07 amOKC-STL
13h 19m1 stop
Frontier Logo
4:35 pm - 12:57 pmSTL-OKC
20h 22m1 stop
$215Frontier
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Fri, Nov 14 - Sat, Nov 15
United Airlines Logo
4:10 pm - 6:27 pmOKC-ORD
2h 17mnonstop
United Airlines Logo
7:46 pm - 10:15 pmORD-OKC
2h 29mnonstop
$235United Airlines
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Wed, Aug 27 - Wed, Sep 3
Delta Logo
4:02 pm - 9:12 pmOKC-MDW
5h 10m1 stop
Delta Logo
4:31 pm - 11:58 pmMDW-OKC
7h 27m1 stop
$237Delta
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Sat, Sep 6 - Sat, Sep 13
Delta Logo
1:00 pm - 7:09 pmOKC-ORD
6h 09m1 stop
Delta Logo
5:30 am - 10:35 amORD-OKC
5h 05m1 stop
$237Delta
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Wed, Sep 3 - Wed, Sep 17
United Airlines Logo
1:45 pm - 6:58 pmOKC-STL
5h 13m1 stop
United Airlines Logo
8:20 am - 3:09 pmSTL-OKC
6h 49m1 stop
$257United Airlines
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Thu, Aug 28 - Sun, Aug 31

Frontier flights from Oklahoma City to Illinois

Our best Frontier deals on Oklahoma City to Illinois flight tickets
Frontier
Sep 9
OKC8:00 amOklahoma City Will Rogers World
13h 28m
1 stop
ORD9:28 pmChicago O'Hare Intl
Sep 13
ORD8:25 amChicago O'Hare Intl
13h 02m
1 stop
OKC9:27 pmOklahoma City Will Rogers World
$205
Find similar
Frontier
Sep 16
OKC8:00 amOklahoma City Will Rogers World
13h 28m
1 stop
ORD9:28 pmChicago O'Hare Intl
Sep 19
ORD10:42 amChicago O'Hare Intl
13h 12m
1 stop
OKC11:54 pmOklahoma City Will Rogers World
$215
Find similar
Frontier
Sep 6
OKC8:00 amOklahoma City Will Rogers World
13h 28m
1 stop
ORD9:28 pmChicago O'Hare Intl
Sep 16
ORD7:20 amChicago O'Hare Intl
13h 18m
1 stop
OKC8:38 pmOklahoma City Will Rogers World
$217
Find similar

United Airlines flights from Oklahoma City to Illinois

Our best United Airlines deals on Oklahoma City to Illinois flight tickets
United Airlines
Aug 27
OKC4:10 pmOklahoma City Will Rogers World
2h 17m
ORD6:27 pmChicago O'Hare Intl
Sep 3
ORD7:46 pmChicago O'Hare Intl
2h 29m
OKC10:15 pmOklahoma City Will Rogers World
$235
Find similar
United Airlines
Aug 28
OKC1:45 pmOklahoma City Will Rogers World
5h 13m
1 stop
STL6:58 pmLambert-St Louis
Aug 31
STL8:20 amLambert-St Louis
6h 49m
1 stop
OKC3:09 pmOklahoma City Will Rogers World
$257
Find similar
United Airlines
Aug 23
OKC5:00 amOklahoma City Will Rogers World
10h 44m
2 stops
STL3:44 pmLambert-St Louis
Aug 24
STL5:15 amLambert-St Louis
5h 21m
1 stop
OKC10:36 amOklahoma City Will Rogers World
$262
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momondo 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, momondo users made 832,500 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Oklahoma City to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Tue 8/26

3:15 pm-9:40 pm

1 stop6h 25m

Lambert-St Louis

Sat 8/30

1:45 pm-3:10 pm

Nonstop1h 25m

$187

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 8/20

2:59 pm-8:22 pm

1 stop5h 23m

Lambert-St Louis

Fri 8/22

9:23 am-2:09 pm

1 stop4h 46m

$192

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 9/3

5:00 am-11:35 am

2 stops6h 35m

Lambert-St Louis

Fri 9/5

5:18 am-9:40 am

1 stop4h 22m

$197

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Tue 8/26

1:55 pm-7:55 pm

2 stops6h 00m

Lambert-St Louis

Sat 8/30

4:45 pm-9:40 pm

1 stop4h 55m

$202

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Tue 9/9

8:00 am-9:28 pm

1 stop13h 28m

Chicago O'Hare Intl

Sat 9/13

8:25 am-9:27 pm

1 stop13h 02m

$205

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Fri 11/14

7:48 pm-9:07 am

1 stop13h 19m

Lambert-St Louis

Sat 11/15

4:35 pm-12:57 pm

1 stop20h 22m

$215

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Wed 8/27

4:10 pm-6:27 pm

Nonstop2h 17m

Chicago O'Hare Intl

Wed 9/3

7:46 pm-10:15 pm

Nonstop2h 29m

$235

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Sat 9/6

4:02 pm-9:12 pm

1 stop5h 10m

Chicago Midway

Sat 9/13

4:31 pm-11:58 pm

1 stop7h 27m

$237

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Wed 9/3

1:00 pm-7:09 pm

1 stop6h 09m

Chicago O'Hare Intl

Wed 9/17

5:30 am-10:35 am

1 stop5h 05m

$237

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Thu 8/28

1:45 pm-6:58 pm

1 stop5h 13m

Lambert-St Louis

Sun 8/31

8:20 am-3:09 pm

1 stop6h 49m

$257

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Oklahoma City to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Oklahoma City is in February. Flight prices, which tend to average around $323, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $328.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Oklahoma City to Illinois is on a Saturday when prices can be found for as low as $555. Flights from Oklahoma City to Illinois on a Sunday will generally be more expensive and average around $794. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Oklahoma City to Illinois during this time can be as low as $536. Flights at noon are often more expensive with an average ticket price of $965.

What is the cheapest Oklahoma City Will Rogers World to Illinois flight route?

Fly from Oklahoma City Will Rogers World to Chicago Midway for the best Oklahoma City Will Rogers World - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Oklahoma City when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $356 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Oklahoma City for as low as $293 on momondo.

What cabin class options are available on Oklahoma City Will Rogers World to Illinois flights?

There are 4 cabin classes available to choose from on Oklahoma City Will Rogers World to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Oklahoma City to Illinois flights?

You could potentially save up to 14% on your flight if you consider stops on a Oklahoma City to Illinois flight.

Cheap Oklahoma City to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oklahoma City to Illinois

Best Price Found

$89

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Illinois

3 airports
The best one-way flight to Illinois from Oklahoma City in the past 72 hours is $89. The best round-trip flight deal from Oklahoma City to Illinois found on momondo in the last 72 hours is $187.
The fastest flight from Oklahoma City to Illinois takes 1h 25m
Direct flights go from Oklahoma City to Illinois every day.
There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)
Search flight deals

  • When did momondo last update prices for flights from Oklahoma City Will Rogers World Airport to Illinois?

    Prices for flights from Oklahoma City Will Rogers World Airport to Illinois are updated daily.

  • How many operators does momondo search for flights from Oklahoma City Will Rogers World Airport to Illinois?

  • How old do you have to be to fly from Oklahoma City Will Rogers World Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oklahoma City Will Rogers World Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Oklahoma City to Illinois?

Best airlines flying from Oklahoma City to Illinois

Compare and see reviews for airlines that fly from Oklahoma City to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $118Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
American AirlinesPriceFrom $233Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $243Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
SouthwestPriceFrom $300Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Oklahoma City to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Oklahoma City to Illinois for you.

Can I find flights from Oklahoma City to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Oklahoma City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Oklahoma City to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Oklahoma City. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Oklahoma City to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Oklahoma City to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.

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