Cheap flights from Oklahoma City to Illinois from $53

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 10/18. 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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Cheap round-trip flights

Frontier Logo
5:48 pm - 11:39 pmOKC-ORD
5h 51m1 stop
Frontier Logo
5:05 am - 4:53 pmORD-OKC
11h 48m1 stop
$144Frontier
Find Deal
Thu, Oct 23 - Sun, Oct 26
Frontier Logo
7:21 pm - 12:24 amOKC-MDW
5h 03m1 stop
Frontier Logo
6:20 am - 4:53 pmMDW-OKC
10h 33m1 stop
$150Frontier
Find Deal
Fri, Oct 17 - Sun, Oct 26
Multiple Airlines Logo
7:13 pm - 9:36 amOKC-ORD
14h 23m1 stop
Multiple Airlines Logo
1:26 pm - 6:34 pmORD-OKC
29h 08m2 stops
$211Multiple Airlines
Find Deal
Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
5:33 pm - 11:53 pmOKC-ORD
6h 20m1 stop
Multiple Airlines Logo
6:58 pm - 10:17 amORD-OKC
39h 19m2 stops
$238Multiple Airlines
Find Deal
Sat, Oct 18 - Wed, Oct 22
Southwest Logo
5:30 am - 6:55 amOKC-STL
1h 25mnonstop
Southwest Logo
8:15 pm - 9:50 pmSTL-OKC
1h 35mnonstop
$257Southwest
Find Deal
Tue, Nov 4 - Tue, Nov 11
United Airlines Logo
10:30 am - 3:19 pmOKC-PIA
4h 49m1 stop
United Airlines Logo
10:48 am - 3:32 pmPIA-OKC
4h 44m1 stop
$259United Airlines
Find Deal
Tue, Sep 30 - Sun, Oct 5
United Airlines Logo
1:26 pm - 10:15 pmOKC-PIA
8h 49m2 stops
United Airlines Logo
10:48 am - 3:32 pmPIA-OKC
4h 44m1 stop
$264United Airlines
Find Deal
Tue, Sep 30 - Sun, Oct 5
Southwest Logo
4:00 pm - 5:25 pmOKC-STL
1h 25mnonstop
Southwest Logo
8:25 am - 3:05 pmSTL-OKC
6h 40m1 stop
$267Southwest
Find Deal
Tue, Nov 4 - Tue, Nov 11
American Airlines Logo
4:01 pm - 9:52 pmOKC-MLI
5h 51m1 stop
American Airlines Logo
11:32 am - 10:09 pmMLI-OKC
10h 37m2 stops
$274American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
10:23 am - 5:34 pmOKC-MLI
7h 11m2 stops
American Airlines Logo
11:32 am - 10:09 pmMLI-OKC
10h 37m2 stops
$279American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21

Frontier flights from Oklahoma City to Illinois

Our best Frontier deals on Oklahoma City to Illinois flight tickets
Frontier
Oct 23
OKC5:48 pmOklahoma City Will Rogers World
5h 51m
1 stop
ORD11:39 pmChicago O'Hare Intl
Oct 26
ORD5:05 amChicago O'Hare Intl
11h 48m
1 stop
OKC4:53 pmOklahoma City Will Rogers World
Frontier
Oct 17
OKC7:21 pmOklahoma City Will Rogers World
5h 03m
1 stop
MDW12:24 amChicago Midway
Oct 26
MDW6:20 amChicago Midway
10h 33m
1 stop
OKC4:53 pmOklahoma City Will Rogers World
Frontier
Oct 1
OKC8:00 amOklahoma City Will Rogers World
13h 28m
1 stop
ORD9:28 pmChicago O'Hare Intl
Oct 5
ORD1:03 pmChicago O'Hare Intl
24h 06m
1 stop
OKC1:09 pmOklahoma City Will Rogers World

American Airlines flights from Oklahoma City to Illinois

Our best American Airlines deals on Oklahoma City to Illinois flight tickets
American Airlines
Feb 18
OKC4:01 pmOklahoma City Will Rogers World
5h 51m
1 stop
MLI9:52 pmMoline Quad-City
Feb 21
MLI11:32 amMoline Quad-City
10h 37m
2 stops
OKC10:09 pmOklahoma City Will Rogers World
American Airlines
Feb 18
OKC10:23 amOklahoma City Will Rogers World
7h 11m
2 stops
MLI5:34 pmMoline Quad-City
Feb 21
MLI11:32 amMoline Quad-City
10h 37m
2 stops
OKC10:09 pmOklahoma City Will Rogers World
American Airlines
Nov 1
OKC5:32 pmOklahoma City Will Rogers World
2h 18m
ORD7:50 pmChicago O'Hare Intl
Nov 8
ORD3:30 pmChicago O'Hare Intl
2h 25m
OKC5:55 pmOklahoma City Will Rogers World

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 September 19, 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 CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Thu 10/23

5:48 pm-11:39 pm

1 stop5h 51m

Chicago O'Hare Intl

Sun 10/26

5:05 am-4:53 pm

1 stop11h 48m

$144

Oklahoma CityChicago

OKC - MDW

OKCMDW

Oklahoma City Will Rogers World

Fri 10/17

7:21 pm-12:24 am

1 stop5h 03m

Chicago Midway

Sun 10/26

6:20 am-4:53 pm

1 stop10h 33m

$150

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Thu 10/23

7:13 pm-9:36 am

1 stop14h 23m

Chicago O'Hare Intl

Sun 10/26

1:26 pm-6:34 pm

2 stops29h 08m

$211

Oklahoma CityChicago

OKC - ORD

OKCORD

Oklahoma City Will Rogers World

Sat 10/18

5:33 pm-11:53 pm

1 stop6h 20m

Chicago O'Hare Intl

Wed 10/22

6:58 pm-10:17 am

2 stops39h 19m

$238

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Tue 11/4

5:30 am-6:55 am

Nonstop1h 25m

Lambert-St Louis

Tue 11/11

8:15 pm-9:50 pm

Nonstop1h 35m

$257

Oklahoma CityPeoria

OKC - PIA

OKCPIA

Oklahoma City Will Rogers World

Tue 9/30

10:30 am-3:19 pm

1 stop4h 49m

Greater Peoria

Sun 10/5

10:48 am-3:32 pm

1 stop4h 44m

$259

Oklahoma CityPeoria

OKC - PIA

OKCPIA

Oklahoma City Will Rogers World

Tue 9/30

1:26 pm-10:15 pm

2 stops8h 49m

Greater Peoria

Sun 10/5

10:48 am-3:32 pm

1 stop4h 44m

$264

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Tue 11/4

4:00 pm-5:25 pm

Nonstop1h 25m

Lambert-St Louis

Tue 11/11

8:25 am-3:05 pm

1 stop6h 40m

$267

Oklahoma CityMoline

OKC - MLI

OKCMLI

Oklahoma City Will Rogers World

Wed 2/18

4:01 pm-9:52 pm

1 stop5h 51m

Moline Quad-City

Sat 2/21

11:32 am-10:09 pm

2 stops10h 37m

$274

Oklahoma CityMoline

OKC - MLI

OKCMLI

Oklahoma City Will Rogers World

Wed 2/18

10:23 am-5:34 pm

2 stops7h 11m

Moline Quad-City

Sat 2/21

11:32 am-10:09 pm

2 stops10h 37m

$279

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 September. Flight prices, which tend to average around $298, 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 September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $322.

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 $566. Flights from Oklahoma City to Illinois on a Sunday will generally be more expensive and average around $813. 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 $545. Flights at noon are often more expensive with an average ticket price of $948.

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

Fly from Oklahoma City Will Rogers World to Chicago O'Hare Intl 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 $368 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 $297 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 16% 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

$173

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from Oklahoma City in the past 72 hours is $173. The best round-trip flight deal from Oklahoma City to Illinois found on momondo in the last 72 hours is $345.
The fastest flight from Oklahoma City to Illinois takes 1h 25m
Direct flights go from Oklahoma City to Illinois every day.
There are 2 airports near Illinois: Chicago Midway (MDW), Lambert-St Louis (STL)
  • 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
5.8
3,171 reviews
Search Frontier flights
American AirlinesPriceFrom $233Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $241Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
United AirlinesPriceFrom $252Free CancellationRating
7.4
8,926 reviews
Search United Airlines 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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1 adult
Sun 10/19
Sun 10/26

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