What is the cheapest airport to fly out of Illinois?

Chicago O'Hare Intl airport offers the cheapest routes to Belize City, from $58; whereas Chicago Midway airport is typically cheaper if you're flying to Guatemala City, from $67. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

What is the cheapest month to fly from Illinois?

March is currently the cheapest month to fly from Illinois . At this moment in time July is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.

Where are the cheapest places to fly to from Illinois?

Check out the cheapest flights from Illinois to embark to: Fly from Chicago to Nashville from $58 round trip Fly from Chicago to Houston from $63 round trip Fly from Chicago to New York from $66 round trip Fly from Chicago to Boston from $67 round trip Fly from Chicago to Detroit from $67 round trip

$65+ Flights from Illinois

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What to know about flights from Illinois

Good round-trip deal	$78 or less
Good one-way deal	$38 or less

Price to beat on a round-trip flight from Illinois.

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Price to beat on a one-way flight from Illinois.

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Find flights from Illinois

Cheapest flights from Illinois
Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on August 7, 2025.

Fri 9/199:35 amORD - DFW

Nonstop2h 49mFrontier

Tue 9/238:00 amDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/6$107

Fri 9/125:35 pmORD - DFW

Nonstop2h 51mFrontier

Sun 9/149:27 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$108

Thu 8/285:27 pmORD - DFW

Nonstop2h 49mFrontier

Mon 9/19:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/7$109

Sat 9/135:30 pmORD - DFW

Nonstop2h 51mFrontier

Mon 9/159:27 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/7$110

Sat 9/205:30 pmORD - DFW

Nonstop2h 51mFrontier

Sat 9/279:27 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$111

Fri 10/105:25 amORD - DFW

Nonstop2h 33mFrontier

Tue 10/285:48 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$112

Wed 10/85:28 pmORD - DFW

Nonstop2h 48mFrontier

Sun 10/129:08 amDFW - ORD

Nonstop2h 35mFrontier

Deal found 8/7$113

Fri 10/176:19 pmORD - DFW

Nonstop2h 34mSpirit Airlines

Mon 10/209:28 pmDFW - ORD

Nonstop2h 22mSpirit Airlines

Deal found 8/5$114

Sun 11/25:25 amORD - DFW

Nonstop2h 33mFrontier

Thu 11/68:55 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$115

Sun 11/25:25 amORD - DFW

Nonstop2h 33mFrontier

Fri 11/78:55 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$116

Sun 10/126:32 pmORD - DFW

Nonstop2h 34mMultiple Airlines

Sat 10/255:53 pmDFW - ORD

Nonstop2h 31mMultiple Airlines

Deal found 8/6$117

Thu 9/1811:13 amORD - LGA

Nonstop2h 05mSpirit Airlines

Tue 9/233:13 pmLGA - ORD

Nonstop2h 38mSpirit Airlines

Deal found 8/6$118

Best flights from Illinois
Discover carefully curated flight deals from Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 7, 2025.

Fri 9/199:35 amORD - DFW

Nonstop2h 49mFrontier

Tue 9/238:00 amDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/6$107

Fri 10/176:19 pmORD - DFW

Nonstop2h 34mSpirit Airlines

Mon 10/209:28 pmDFW - ORD

Nonstop2h 22mSpirit Airlines

Deal found 8/5$114

Sun 10/126:32 pmORD - DFW

Nonstop2h 34mMultiple Airlines

Sat 10/255:53 pmDFW - ORD

Nonstop2h 31mMultiple Airlines

Deal found 8/6$117

Sat 9/68:34 amORD - JFK

Nonstop2h 26mJetBlue

Wed 9/1010:30 amJFK - ORD

Nonstop2h 40mJetBlue

Deal found 8/6$128

Wed 8/276:00 amORD - BOS

1 stop6h 16mDelta

Fri 9/52:00 pmBOS - ORD

1 stop7h 47mDelta

Deal found 8/7$137

Thu 9/411:42 amORD - BOS

1 stop4h 35mUnited Airlines

Mon 9/88:27 pmBOS - ORD

Nonstop2h 48mUnited Airlines

Deal found 8/7$139

Wed 9/103:10 pmORD - BOS

1 stop6h 20mSouthwest

Sun 9/145:15 amBOS - ORD

1 stop7h 35mSouthwest

Deal found 8/7$141

Tue 9/28:25 pmORD - BOS

Nonstop2h 34mAmerican Airlines

Thu 9/115:00 amBOS - ORD

Nonstop2h 51mAmerican Airlines

Deal found 8/6$144

Wed 8/276:20 amORD - SEA

Nonstop4h 30mHawaiian Airlines

Tue 9/212:59 amSEA - ORD

Nonstop4h 04mHawaiian Airlines

Deal found 8/6$170

Fri 9/268:00 amORD - SEA

Nonstop4h 37mAlaska Airlines

Sun 9/2812:59 amSEA - ORD

Nonstop4h 04mAlaska Airlines

Deal found 8/7$172

Fri 9/125:35 pmORD - DFW

Nonstop2h 51mFrontier

Sun 9/149:27 pmDFW - ORD

Nonstop2h 31mFrontier

Deal found 8/6$108

Wed 9/171:40 amORD - MEX

Nonstop4h 10mVolaris

Wed 9/2412:40 amMEX - ORD

Nonstop4h 02mVolaris

Deal found 8/6$227

Last-minute flights from Illinois
Discover last-minute flight deals departing from Illinois. Data last updated August 7, 2025 and is based on user searches.

Tue 8/127:00 amORD - LGA

1 stop14h 09mMultiple Airlines

Sat 8/301:19 pmLGA - ORD

1 stop10h 03mMultiple Airlines

Deal found 8/6$155

Wed 8/138:25 pmORD - BOS

Nonstop2h 34mAmerican Airlines

Wed 8/2011:14 amBOS - ORD

Nonstop2h 55mAmerican Airlines

Deal found 8/5$137

Wed 8/133:48 pmORD - BOS

Nonstop2h 30mUnited Airlines

Thu 8/144:27 pmBOS - ORD

Nonstop2h 53mUnited Airlines

Deal found 8/6$147

Wed 8/138:05 pmORD - BOS

Nonstop2h 27mUnited Airlines

Sat 8/167:12 pmBOS - ORD

1 stop5h 18mUnited Airlines

Deal found 8/6$157

Thu 8/149:32 pmORD - BOS

Nonstop2h 27mUnited Airlines

Mon 8/187:04 pmBOS - ORD

1 stop5h 37mUnited Airlines

Deal found 8/6$153

Thu 8/145:05 amORD - LGA

1 stop9h 53mSpirit Airlines

Wed 9/37:55 pmLGA - ORD

1 stop14h 23mSpirit Airlines

Deal found 8/7$156

Fri 8/157:30 amORD - BOS

1 stop9h 15mSouthwest

Sun 8/248:55 amBOS - ORD

1 stop7h 25mSouthwest

Deal found 8/7$138

Sat 8/169:55 amORD - DFW

Nonstop2h 42mFrontier

Sat 8/239:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/6$137

Sat 8/166:56 amORD - LGA

1 stop12h 19mSpirit Airlines

Sat 9/63:12 pmLGA - ORD

Nonstop2h 38mSpirit Airlines

Deal found 8/7$139

Sat 8/169:55 amORD - DFW

Nonstop2h 42mFrontier

Sun 8/249:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/6$147

Sat 8/169:55 amORD - DFW

Nonstop2h 42mFrontier

Wed 8/209:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 8/5$152

Sat 8/166:10 amORD - LAX

Nonstop4h 29mFrontier

Sat 8/234:44 pmLAX - ORD

Nonstop4h 22mFrontier

Deal found 8/5$154

One-way flights from Illinois
Search for one-way flight options from Illinois. Find affordable one-way fares based on user searches. Data last updated August 7, 2025.

Sun 9/211:03 pmORD - LAS

Nonstop4h 19mFrontier

Deal found 8/6$65

Wed 8/277:05 amORD - LAS

1 stop16h 23mSpirit Airlines

Deal found 8/5$66

Sat 8/235:35 pmORD - LAS

Nonstop3h 52mSpirit Airlines

Deal found 8/6$67

Fri 8/229:45 pmORD - LAS

Nonstop4h 09mFrontier

Deal found 8/6$68

Wed 8/207:00 amORD - BOS

Nonstop2h 29mDelta

Deal found 8/7$69

Sun 10/269:52 pmORD - LAS

Nonstop4h 06mFrontier

Deal found 8/5$69

Wed 9/1711:57 amORD - BOS

1 stop11h 00mSpirit Airlines

Deal found 8/7$70

Thu 10/28:01 pmORD - LAS

Nonstop4h 05mSpirit Airlines

Deal found 8/6$71

Sat 8/305:35 pmORD - LAS

Nonstop3h 52mSpirit Airlines

Deal found 8/5$72

Sat 9/207:45 pmORD - LAS

Nonstop4h 03mUnited Airlines

Deal found 8/6$73

Sun 10/56:15 amORD - LAS

Nonstop4h 00mSouthwest

Deal found 8/6$74

Wed 12/311:30 amORD - BOS

Nonstop2h 16mJetBlue

Deal found 8/7$75

Fly to

Route

Depart

Return

Price

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Fri 9/19

9:35 am-12:24 pm

Nonstop2h 49m

Dallas/Fort Worth

Tue 9/23

8:00 am-10:40 am

Nonstop2h 40m

$107

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Fri 9/12

5:35 pm-8:26 pm

Nonstop2h 51m

Dallas/Fort Worth

Sun 9/14

9:27 pm-11:58 pm

Nonstop2h 31m

$108

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Thu 8/28

5:27 pm-8:16 pm

Nonstop2h 49m

Dallas/Fort Worth

Mon 9/1

9:21 pm-12:01 am

Nonstop2h 40m

$109

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Sat 9/13

5:30 pm-8:21 pm

Nonstop2h 51m

Dallas/Fort Worth

Mon 9/15

9:27 pm-11:58 pm

Nonstop2h 31m

$110

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Sat 9/20

5:30 pm-8:21 pm

Nonstop2h 51m

Dallas/Fort Worth

Sat 9/27

9:27 pm-11:58 pm

Nonstop2h 31m

$111

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Fri 10/10

5:25 am-7:58 am

Nonstop2h 33m

Dallas/Fort Worth

Tue 10/28

5:48 pm-8:19 pm

Nonstop2h 31m

$112

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Fri 10/17

6:19 pm-8:53 pm

Nonstop2h 34m

Dallas/Fort Worth

Mon 10/20

9:28 pm-11:50 pm

Nonstop2h 22m

$114

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Sun 10/12

6:32 pm-9:06 pm

Nonstop2h 34m

Dallas/Fort Worth

Sat 10/25

5:53 pm-8:24 pm

Nonstop2h 31m

$117

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Thu 9/18

11:13 am-2:18 pm

Nonstop2h 05m

New York LaGuardia

Tue 9/23

3:13 pm-4:51 pm

Nonstop2h 38m

$118

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Sat 9/6

11:57 am-9:05 pm

1 stop8h 08m

New York LaGuardia

Thu 9/11

3:13 pm-4:51 pm

Nonstop2h 38m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 60 results

...

Best time to book a flight from Illinois

Have a flexible travel schedule? Discover the best time to fly 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.

Travel insights for flights from Illinois

Get recent, data-driven insights about flights from Illinois including ideal travel times, pricing trends, and more.

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

Currently, March is the cheapest month in which you can book a flight from Illinois (average of $74). Flying from Illinois in July will prove the most costly (average of $121). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

When is the cheapest time to fly from Illinois?

Those who are seeking the cheapest fare on flights departing from Illinois would be wise to consider leaving during Thursday at noon when prices are typically at their lowest. When considering other options, price-conscious travelers should avoid Sunday afternoons when fares are usually the most expensive.

Which airlines fly from Illinois?

For flights departing from Illinois check dates and pricing for the following: United Airlines, American Airlines, Spirit Airlines, Delta, Frontier. These airlines depart to the following popular destinations: New York.

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Nashville Intl, with prices starting at $38. Explore other affordable destinations below.

Airline reviews for flights from Illinois

Read through reviews of airlines servicing Illinois, such as Delta, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Delta

8.0

Very good

7,987 reviews

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

United Airlines

7.4

Good

8,916 reviews

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Spirit Airlines

6.3

Okay

8,051 reviews

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Frontier

5.9

Fair

3,230 reviews

Delta

8.0

Very good

7,987 reviews

Reviews

1 / 20

10.0

Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Browse thousands of different options on Cheapflights for your next trip

Related info for your journey

What is the cheapest airport to fly out of Illinois?
Chicago O'Hare Intl airport offers the cheapest routes to Belize City, from $58; whereas Chicago Midway airport is typically cheaper if you're flying to Guatemala City, from $67. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.
What is the cheapest month to fly from Illinois?
March is currently the cheapest month to fly from Illinois. At this moment in time July is the most expensive month. These prices are determined by multiple factors and booking in advance can help keep costs down if your schedule is not as flexible.
Where are the cheapest places to fly to from Illinois?
Check out the cheapest flights from Illinois to embark to:
Fly from Chicago to Nashville from $58 round trip
Fly from Chicago to Houston from $63 round trip
Fly from Chicago to New York from $66 round trip
Fly from Chicago to Boston from $67 round trip
Fly from Chicago to Detroit from $67 round trip

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$65+ Cheap flights from 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.

What to know about flights from Illinois

Good round-trip deal

Good one-way deal

Find flights from Illinois

Cheapest flights from IllinoisExplore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on August 7, 2025.

Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on August 7, 2025.

Find flights from Illinois within your budget

Best time to book a flight from Illinois

Have a flexible travel schedule? Discover the best time to fly from Illinois with our price prediction graph.

Travel insights for flights from Illinois

Get recent, data-driven insights about flights from Illinois including ideal travel times, pricing trends, and more.

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

When is the cheapest time to fly from Illinois?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Newark. Price data was last updated on December 16, 2024.

Which airlines fly from Illinois?

What is the cheapest place to fly to from Illinois?

Airline reviews for flights from Illinois

Read through reviews of airlines servicing Illinois, such as Delta, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Popular international destinations from Illinois

The most popular international flight routes departing from Illinois we’ve come across at this time.

Related info for your journey

What is the cheapest airport to fly out of Illinois?

What is the cheapest month to fly from Illinois?

Where are the cheapest places to fly to from Illinois?

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Book with Flexibility

Travel Smart

Cheapest flights from Illinois
Explore the most affordable flight options available from Illinois. Find the lowest fares based on data from user searches, with prices last updated on August 7, 2025.