What is the cheapest airport to fly out of Illinois?

Chicago O'Hare Intl airport offers the cheapest routes to Belize City, from $74; whereas Chicago Midway airport is typically cheaper if you're flying to Guatemala City, from $77. 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?

September is currently the cheapest month to fly from Illinois . At this moment in time May 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 Atlanta from $74 round trip Fly from Chicago to Nashville from $77 round trip Fly from Chicago to Minneapolis from $77 round trip Fly from Chicago to Detroit from $77 round trip Fly from Chicago to Pittsburgh from $77 round trip

$58+ Flights from Illinois

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What to know about flights from Illinois

Good round-trip deal	$65 or less
Good one-way deal	$44 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 June 16, 2025.

Wed 7/25:51 amORD - LGA

Nonstop2h 09mSpirit Airlines

Tue 7/86:30 pmLGA - ORD

Nonstop2h 35mSpirit Airlines

Deal found 6/14$118

Thu 9/119:42 amORD - BOS

Nonstop2h 28mJetBlue

Thu 9/114:05 pmBOS - ORD

Nonstop2h 50mJetBlue

Deal found 6/14$120

Mon 8/116:40 amORD - LAX

Nonstop4h 28mSpirit Airlines

Mon 8/1111:20 amLAX - ORD

1 stop8h 10mSpirit Airlines

Deal found 6/14$121

Tue 7/19:28 pmORD - EWR

Nonstop2h 18mSpirit Airlines

Fri 7/45:00 amEWR - ORD

Nonstop2h 37mSpirit Airlines

Deal found 6/14$121

Thu 7/1711:21 amORD - DFW

Nonstop2h 30mSpirit Airlines

Wed 7/302:56 pmDFW - ORD

Nonstop2h 14mSpirit Airlines

Deal found 6/16$122

Wed 7/910:00 amORD - BOS

1 stop12h 03mSpirit Airlines

Tue 7/296:15 amBOS - ORD

1 stop10h 16mSpirit Airlines

Deal found 6/15$123

Tue 8/195:27 pmORD - DFW

Nonstop2h 49mFrontier

Sun 8/249:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 6/14$126

Wed 7/25:38 pmORD - EWR

1 stop6h 06mMultiple Airlines

Fri 7/45:00 amEWR - ORD

Nonstop2h 37mMultiple Airlines

Deal found 6/16$130

Sat 9/132:20 pmORD - DFW

Nonstop2h 48mMultiple Airlines

Fri 10/33:20 pmDFW - ORD

Nonstop2h 30mMultiple Airlines

Deal found 6/14$135

Wed 7/97:17 amORD - BOS

Nonstop2h 23mAmerican Airlines

Tue 7/227:00 amBOS - ORD

Nonstop3h 05mAmerican Airlines

Deal found 6/16$139

Wed 9/32:03 pmORD - LGA

Nonstop2h 12mAmerican Airlines

Sat 9/67:48 pmLGA - ORD

Nonstop2h 33mAmerican Airlines

Deal found 6/16$140

Mon 7/219:56 pmORD - LAS

Nonstop4h 09mMultiple Airlines

Wed 7/2312:34 amLAS - ORD

Nonstop3h 29mMultiple Airlines

Deal found 6/13$140

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 June 16, 2025.

Wed 7/25:51 amORD - LGA

Nonstop2h 09mSpirit Airlines

Tue 7/86:30 pmLGA - ORD

Nonstop2h 35mSpirit Airlines

Deal found 6/14$118

Thu 9/119:42 amORD - BOS

Nonstop2h 28mJetBlue

Thu 9/114:05 pmBOS - ORD

Nonstop2h 50mJetBlue

Deal found 6/14$120

Tue 8/195:27 pmORD - DFW

Nonstop2h 49mFrontier

Sun 8/249:21 pmDFW - ORD

Nonstop2h 40mFrontier

Deal found 6/14$126

Wed 7/25:38 pmORD - EWR

1 stop6h 06mMultiple Airlines

Fri 7/45:00 amEWR - ORD

Nonstop2h 37mMultiple Airlines

Deal found 6/16$130

Wed 7/97:17 amORD - BOS

Nonstop2h 23mAmerican Airlines

Tue 7/227:00 amBOS - ORD

Nonstop3h 05mAmerican Airlines

Deal found 6/16$139

Wed 7/22:05 pmORD - LGA

Nonstop2h 22mUnited Airlines

Tue 7/84:25 pmLGA - ORD

Nonstop2h 40mUnited Airlines

Deal found 6/16$141

Wed 8/133:10 pmORD - BOS

1 stop6h 20mSouthwest

Sun 8/175:15 amBOS - ORD

1 stop7h 35mSouthwest

Deal found 6/16$145

Tue 8/2612:59 pmORD - LGA

Nonstop2h 31mDelta

Tue 9/24:05 pmLGA - ORD

Nonstop2h 57mDelta

Deal found 6/15$147

Fri 8/156:00 amORD - SEA

Nonstop4h 37mAlaska Airlines

Mon 8/188:55 amSEA - ORD

1 stop12h 44mAlaska Airlines

Deal found 6/15$167

Fri 8/155:55 pmORD - SEA

Nonstop4h 40mHawaiian Airlines

Mon 8/185:54 pmSEA - ORD

Nonstop4h 05mHawaiian Airlines

Deal found 6/15$171

Mon 8/116:40 amORD - LAX

Nonstop4h 28mSpirit Airlines

Mon 8/1111:20 amLAX - ORD

1 stop8h 10mSpirit Airlines

Deal found 6/14$121

Wed 8/201:40 amORD - MEX

Nonstop4h 10mVolaris

Sat 8/2312:40 amMEX - ORD

Nonstop4h 02mVolaris

Deal found 6/14$251

Last-minute flights from Illinois
Discover last-minute flight deals departing from Illinois. Data last updated June 16, 2025 and is based on user searches.

Sat 6/219:55 amORD - DFW

Nonstop2h 35mMultiple Airlines

Mon 7/74:57 pmDFW - ORD

Nonstop2h 17mMultiple Airlines

Deal found 6/15$171

Tue 6/245:38 pmORD - EWR

1 stop6h 06mMultiple Airlines

Tue 7/85:00 amEWR - ORD

Nonstop2h 37mMultiple Airlines

Deal found 6/14$124

Tue 6/249:28 pmORD - EWR

Nonstop2h 18mSpirit Airlines

Tue 7/85:00 amEWR - ORD

Nonstop2h 37mSpirit Airlines

Deal found 6/14$135

Tue 6/247:00 amORD - BOS

Nonstop2h 31mDelta

Fri 7/43:15 pmBOS - ORD

Nonstop2h 55mDelta

Deal found 6/16$147

Tue 6/245:38 pmORD - EWR

1 stop6h 06mFrontier

Tue 7/111:04 amEWR - ORD

1 stop6h 30mFrontier

Deal found 6/16$148

Wed 6/258:40 amORD - BOS

Nonstop2h 24mJetBlue

Fri 7/46:00 amBOS - ORD

Nonstop2h 55mJetBlue

Deal found 6/14$137

Wed 6/255:51 amORD - LGA

Nonstop2h 09mSpirit Airlines

Fri 7/46:30 pmLGA - ORD

Nonstop2h 35mSpirit Airlines

Deal found 6/15$149

Wed 6/258:40 pmORD - BOS

Nonstop2h 40mAmerican Airlines

Sun 6/295:00 amBOS - ORD

Nonstop2h 54mAmerican Airlines

Deal found 6/13$155

Thu 6/2610:15 pmORD - LAS

Nonstop4h 04mSpirit Airlines

Thu 7/312:44 amLAS - ORD

Nonstop3h 28mSpirit Airlines

Deal found 6/14$155

Sat 6/2810:46 amORD - BOS

1 stop12h 01mSpirit Airlines

Wed 7/98:39 pmBOS - ORD

1 stop13h 16mSpirit Airlines

Deal found 6/16$159

Mon 6/309:32 pmORD - BOS

Nonstop2h 27mUnited Airlines

Sat 10/44:25 pmBOS - ORD

Nonstop2h 55mUnited Airlines

Deal found 6/16$131

Mon 6/304:00 pmORD - BOS

1 stop7h 05mSouthwest

Tue 7/15:45 amBOS - ORD

1 stop7h 05mSouthwest

Deal found 6/15$157

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 June 16, 2025.

Sun 9/145:10 pmORD - EWR

Nonstop2h 18mSpirit Airlines

Deal found 6/14$58

Mon 8/258:40 amORD - BOS

Nonstop2h 25mJetBlue

Deal found 6/15$62

Sat 6/2810:15 pmORD - LAX

1 stop10h 44mSpirit Airlines

Deal found 6/14$67

Wed 9/311:19 amORD - BOS

1 stop11h 30mSpirit Airlines

Deal found 6/15$68

Fri 9/193:21 pmORD - LAS

Nonstop3h 55mSpirit Airlines

Deal found 6/16$68

Tue 7/17:10 pmORD - BOS

Nonstop2h 40mDelta

Deal found 6/14$69

Sat 8/167:10 amORD - EWR

Nonstop2h 18mUnited Airlines

Deal found 6/13$72

Thu 8/211:50 pmORD - BOS

1 stop7h 25mSouthwest

Deal found 6/14$73

Wed 7/25:51 amORD - LGA

Nonstop2h 09mSpirit Airlines

Deal found 6/15$75

Sat 10/183:52 pmORD - DFW

Nonstop2h 35mAmerican Airlines

Deal found 6/14$78

Mon 8/257:25 amORD - DFW

Nonstop2h 39mUnited Airlines

Deal found 6/16$79

Tue 9/28:30 pmORD - EWR

Nonstop2h 29mAmerican Airlines

Deal found 6/14$79

Find flights from Illinois within your budget

Fly to

Route

Depart

Return

Price

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Wed 7/2

5:51 am-9:00 am

Nonstop2h 09m

New York LaGuardia

Tue 7/8

6:30 pm-8:05 pm

Nonstop2h 35m

$118

ChicagoBoston

ORD - BOS

ORDBOS

Chicago O'Hare Intl

Thu 9/11

9:42 am-1:10 pm

Nonstop2h 28m

Boston Logan Intl

Thu 9/11

4:05 pm-5:55 pm

Nonstop2h 50m

$120

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Mon 8/11

6:40 am-9:08 am

Nonstop4h 28m

Los Angeles

Mon 8/11

11:20 am-9:30 pm

1 stop8h 10m

$121

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Tue 7/1

9:28 pm-12:46 am

Nonstop2h 18m

Newark

Fri 7/4

5:00 am-6:37 am

Nonstop2h 37m

$121

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Thu 7/17

11:21 am-1:51 pm

Nonstop2h 30m

Dallas/Fort Worth

Wed 7/30

2:56 pm-5:10 pm

Nonstop2h 14m

$122

ChicagoBoston

ORD - BOS

ORDBOS

Chicago O'Hare Intl

Wed 7/9

10:00 am-11:03 pm

1 stop12h 03m

Boston Logan Intl

Tue 7/29

6:15 am-3:31 pm

1 stop10h 16m

$123

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Tue 7/1

5:38 pm-12:44 am

1 stop6h 06m

Newark

Tue 7/8

5:00 am-6:37 am

Nonstop2h 37m

$124

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Tue 8/19

5:27 pm-8:16 pm

Nonstop2h 49m

Dallas/Fort Worth

Sun 8/24

9:21 pm-12:01 am

Nonstop2h 40m

$126

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Sat 9/13

2:20 pm-5:08 pm

Nonstop2h 48m

Dallas/Fort Worth

Fri 10/3

3:20 pm-5:50 pm

Nonstop2h 30m

$135

ChicagoBoston

ORD - BOS

ORDBOS

Chicago O'Hare Intl

Wed 7/9

8:05 pm-11:32 pm

Nonstop2h 27m

Boston Logan Intl

Tue 7/15

6:07 am-8:05 am

Nonstop2h 58m

$137

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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, September is the cheapest month in which you can book a flight from Illinois (average of $103). Flying from Illinois in May will prove the most costly (average of $198). 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 Wednesday 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, Frontier, Southwest. These airlines depart to the following popular destinations: Cancún.

What is the cheapest place to fly to from Illinois?

The cheapest city to fly to from Illinois is Lambert-St Louis, with prices starting at $36. Explore other affordable destinations below.

Airline reviews for flights from Illinois

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,963 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Alaska Airlines

8.0

Very good

10,000 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Southwest

8.0

Very good

4,278 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Aeromexico

7.5

Good

1,711 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,799 reviews

Delta

8.0

Very good

7,963 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $74; whereas Chicago Midway airport is typically cheaper if you're flying to Guatemala City, from $77. 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?
September is currently the cheapest month to fly from Illinois. At this moment in time May 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 Atlanta from $74 round trip
Fly from Chicago to Nashville from $77 round trip
Fly from Chicago to Minneapolis from $77 round trip
Fly from Chicago to Detroit from $77 round trip
Fly from Chicago to Pittsburgh from $77 round trip

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$58+ 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 9/14. 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 June 16, 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 June 16, 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 Cancún. Price data was last updated on October 20, 2024.

Which airlines fly from Illinois?

What is the cheapest place to fly to from Illinois?

Airline reviews for flights from Illinois

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 June 16, 2025.