How many flights depart from Oklahoma to Illinois on average per week?

As of September 2025, there are 946 flights per week flying from Oklahoma to Illinois. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

How long is the flight from Oklahoma to Illinois?

The flight from Oklahoma to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Tulsa (a popular airport in Oklahoma) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 2h 02m on average. If you fly from Oklahoma City (another popular airport in Oklahoma) to Chicago O'Hare Intl Airport, then the average flight time is 2h 13m.

What airlines fly to Illinois?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Oklahoma according to our data. American Airlines is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Oklahoma to Illinois on average per day?

As of September 2025, there are 135 flights per day flying from Oklahoma to Illinois. The most common time of day flights depart is 3:00PM, with 49% of flights taking off in the afternoon.

What is the cheapest airline that flies from Oklahoma to Illinois?

Frontier, Spirit Airlines, and United Airlines are the most popular carriers operating from Oklahoma to Illinois

When did momondo last update prices for flights from Oklahoma to Illinois?

Prices for flights from Oklahoma to Illinois refresh daily.

How many operators does momondo search for flights from Oklahoma to Illinois?

There are 6 operators available for flights from Oklahoma to Illinois as of September 2025.

How old do you have to be to fly from Oklahoma 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 to Illinois.

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

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$34 Cheap Flights from Oklahoma to Illinois in 2025/26

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Find the cheapest flights from Oklahoma to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:00 am - 9:54 amDFW-STL

1h 54mnonstop

10:18 am - 12:15 pmSTL-DFW

1h 57mnonstop

$99Frontier

Find Deal

Sun, Oct 5 - Mon, Oct 27

7:30 am - 9:22 amDFW-STL

1h 52mnonstop

11:32 am - 10:39 pmSTL-DFW

11h 07m1 stop

$104Frontier

Find Deal

Thu, Oct 23 - Thu, Oct 23

9:05 am - 11:33 amDFW-ORD

2h 28mnonstop

4:03 pm - 11:54 pmORD-DFW

7h 51m1 stop

$115Spirit Airlines

Find Deal

Thu, Oct 23 - Mon, Oct 27

7:20 am - 9:44 amDFW-ORD

2h 24mnonstop

10:05 pm - 12:34 amORD-DFW

2h 29mnonstop

$128Spirit Airlines

Find Deal

Thu, Feb 19 - Thu, Feb 26

7:00 am - 8:53 amDFW-STL

1h 53mnonstop

9:43 am - 11:36 amSTL-DFW

1h 53mnonstop

$139American Airlines

Find Deal

Tue, Oct 21 - Tue, Oct 28

5:50 pm - 7:29 pmDFW-STL

1h 39mnonstop

7:00 am - 9:16 amSTL-DFW

2h 16mnonstop

$140American Airlines

Find Deal

Tue, Dec 9 - Wed, Dec 10

11:23 am - 1:23 pmXNA-ORD

2h 00mnonstop

8:45 am - 10:48 amORD-XNA

2h 03mnonstop

$219United Airlines

Find Deal

Sat, Oct 11 - Sun, Oct 12

4:25 pm - 5:50 pmOKC-STL

1h 25mnonstop

9:25 pm - 10:55 pmSTL-OKC

1h 30mnonstop

$257Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

7:45 am - 9:45 amXNA-ORD

2h 00mnonstop

8:00 pm - 10:04 pmORD-XNA

2h 04mnonstop

$259United Airlines

Find Deal

Sat, Oct 4 - Thu, Oct 9

2:55 pm - 7:10 pmOKC-STL

4h 15m1 stop

9:25 pm - 10:55 pmSTL-OKC

1h 30mnonstop

$267Southwest

Find Deal

Wed, Oct 22 - Wed, Oct 29

Spirit Airlines flights from Oklahoma to Illinois

Our best Spirit Airlines deals on Oklahoma to Illinois flight tickets

Spirit Airlines

Oct 23

DFW9:05 amDallas/Fort Worth

2h 28m

ORD11:33 amChicago O'Hare Intl

Oct 27

ORD4:03 pmChicago O'Hare Intl

7h 51m

1 stop

DFW11:54 pmDallas/Fort Worth

$115

Find similar

Spirit Airlines

Feb 19

DFW7:20 amDallas/Fort Worth

2h 24m

ORD9:44 amChicago O'Hare Intl

Feb 26

ORD10:05 pmChicago O'Hare Intl

2h 29m

DFW12:34 amDallas/Fort Worth

$128

Find similar

Spirit Airlines

Oct 19

DFW9:05 amDallas/Fort Worth

2h 28m

ORD11:33 amChicago O'Hare Intl

Oct 21

ORD5:05 amChicago O'Hare Intl

10h 26m

1 stop

DFW3:31 pmDallas/Fort Worth

$130

Find similar

Frontier flights from Oklahoma to Illinois

Our best Frontier deals on Oklahoma to Illinois flight tickets

Frontier

Oct 2

DFW8:00 amDallas/Fort Worth

1h 54m

STL9:54 amLambert-St Louis

Oct 5

STL10:39 amLambert-St Louis

1h 50m

DFW12:29 pmDallas/Fort Worth

$98

Find similar

Frontier

Oct 5

DFW8:00 amDallas/Fort Worth

1h 54m

STL9:54 amLambert-St Louis

Oct 27

STL10:18 amLambert-St Louis

1h 57m

DFW12:15 pmDallas/Fort Worth

$99

Find similar

Frontier

Oct 23

DFW7:30 amDallas/Fort Worth

1h 52m

STL9:22 amLambert-St Louis

Oct 23

STL11:32 amLambert-St Louis

11h 07m

1 stop

DFW10:39 pmDallas/Fort Worth

$104

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Sun 10/5

8:00 am-9:54 am

Nonstop1h 54m

Lambert-St Louis

Mon 10/27

10:18 am-12:15 pm

Nonstop1h 57m

$99

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Thu 10/23

7:30 am-9:22 am

Nonstop1h 52m

Lambert-St Louis

Thu 10/23

11:32 am-10:39 pm

1 stop11h 07m

$104

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Thu 10/23

9:05 am-11:33 am

Nonstop2h 28m

Chicago O'Hare Intl

Mon 10/27

4:03 pm-11:54 pm

1 stop7h 51m

$115

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Thu 2/19

7:20 am-9:44 am

Nonstop2h 24m

Chicago O'Hare Intl

Thu 2/26

10:05 pm-12:34 am

Nonstop2h 29m

$128

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 10/21

7:00 am-8:53 am

Nonstop1h 53m

Lambert-St Louis

Tue 10/28

9:43 am-11:36 am

Nonstop1h 53m

$139

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 12/9

5:50 pm-7:29 pm

Nonstop1h 39m

Lambert-St Louis

Wed 12/10

7:00 am-9:16 am

Nonstop2h 16m

$140

FayettevilleChicago

XNA - ORD

XNAORD

Fayetteville Northwest Arkansas

Sat 10/11

11:23 am-1:23 pm

Nonstop2h 00m

Chicago O'Hare Intl

Sun 10/12

8:45 am-10:48 am

Nonstop2h 03m

$219

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 10/22

4:25 pm-5:50 pm

Nonstop1h 25m

Lambert-St Louis

Wed 10/29

9:25 pm-10:55 pm

Nonstop1h 30m

$257

FayettevilleChicago

XNA - ORD

XNAORD

Fayetteville Northwest Arkansas

Sat 10/4

7:45 am-9:45 am

Nonstop2h 00m

Chicago O'Hare Intl

Thu 10/9

8:00 pm-10:04 pm

Nonstop2h 04m

$259

Oklahoma CitySt. Louis

OKC - STL

OKCSTL

Oklahoma City Will Rogers World

Wed 10/22

2:55 pm-7:10 pm

1 stop4h 15m

Lambert-St Louis

Wed 10/29

9:25 pm-10:55 pm

Nonstop1h 30m

$267

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oklahoma 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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Oklahoma 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 to Illinois is on a Saturday when prices can be found for as low as $566. Flights from Oklahoma to Illinois on a Sunday will generally be more expensive and average around $818. 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 to Illinois during this time can be as low as $543. Flights at noon are often more expensive with an average ticket price of $945.

What is the cheapest Oklahoma to Illinois flight route?

Fly from Tulsa to Chicago Midway for the best Oklahoma - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Oklahoma for as low as $297 on momondo.

What cabin class options are available on Oklahoma to Illinois flights?

There are 4 cabin classes available to choose from on Oklahoma 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 to Illinois flights?

No. A direct flight is the cheapest option for a flight between Oklahoma to Illinois.

Cheap Oklahoma to Illinois flight deals and tips

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

Best Price Found	$158
Fastest flight time	1h 25m
Direct flights	Every day
Airports in Illinois	1 airport

The best one-way flight to Illinois from Oklahoma in the past 72 hours is $158. The best round-trip flight deal from Oklahoma to Illinois found on momondo in the last 72 hours is $355.

The fastest flight from Oklahoma to Illinois takes 1h 25m

Direct flights go from Oklahoma to Illinois every day.

There is 1 airport near Illinois: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Oklahoma to Illinois?
Prices for flights from Oklahoma to Illinois refresh daily.
How many operators does momondo search for flights from Oklahoma to Illinois?
There are 6 operators available for flights from Oklahoma to Illinois as of September 2025.
How old do you have to be to fly from Oklahoma 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 to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Oklahoma to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Oklahoma to Illinois is Embraer 175 (Enhanced Winglets), representing 23.54% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 700 at 20.50%, Canadair (Bombardier) Regional Jet CRJ-550 at 13.77%, and Embraer 175 at 9.77%.

Best airlines flying from Oklahoma to Illinois

Compare and see reviews for airlines that fly from Oklahoma to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $118	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
Southwest	PriceFrom $167	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
American Airlines	PriceFrom $174	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $182	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Oklahoma 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 to Illinois for you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Oklahoma to Illinois.

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

Price alerts on flights to Illinois from Oklahoma are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Illinois trip

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Find better results for your trip to Illinois

Popular cities in Illinois

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Flights to San Franciscofrom $60

Flights to Washington, D.C.from $56

Flights to Bostonfrom $67

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Seattlefrom $102

Cheap flights from Oklahoma to Illinois from $34

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 to Illinois departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Oklahoma to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Spirit Airlines flights from Oklahoma to Illinois

Our best Spirit Airlines deals on Oklahoma to Illinois flight tickets

Frontier flights from Oklahoma to Illinois

Our best Frontier deals on Oklahoma to Illinois flight tickets

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Use the filters below to find and compare flights from Oklahoma to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from Oklahoma 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?

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

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 to Illinois during this time can be as low as $543. Flights at noon are often more expensive with an average ticket price of $945.

What is the cheapest Oklahoma to Illinois flight route?

Fly from Tulsa to Chicago Midway for the best Oklahoma - Illinois flight prices

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

What cabin class options are available on Oklahoma to Illinois flights?

There are 4 cabin classes available to choose from on Oklahoma 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 to Illinois flights?

No. A direct flight is the cheapest option for a flight between Oklahoma to Illinois.

What is the cheapest airline that flies from Oklahoma to Illinois?

Frontier, Spirit Airlines, and United Airlines are the most popular carriers operating from Oklahoma to Illinois

What airlines fly to Illinois?

How many flights depart from Oklahoma to Illinois on average per day?

As of September 2025, there are 135 flights per day flying from Oklahoma to Illinois. The most common time of day flights depart is 3:00PM, with 49% of flights taking off in the afternoon.

How many flights depart from Oklahoma to Illinois on average per week?

As of September 2025, there are 946 flights per week flying from Oklahoma to Illinois. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.

How long is the flight from Oklahoma to Illinois?

Cheap Oklahoma to Illinois flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Oklahoma to Illinois?

How many operators does momondo search for flights from Oklahoma to Illinois?

How old do you have to be to fly from Oklahoma to Illinois?

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

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

Best airlines flying from Oklahoma to Illinois

Compare and see reviews for airlines that fly from Oklahoma to Illinois with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo