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$44+ Cheap flights from North America to 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ORD
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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Find flight deals from North America to Illinois

Cheapest flights from North America to Illinois
Explore the most affordable flight options available from North America to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:42 pmDFW - ORD
1 stop10h 23mSpirit Airlines
Tue 12/167:20 amORD - DFW
Nonstop2h 38mSpirit Airlines
Deal found 11/15$88
This Frontier deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:05 amDFW - MDW
1 stop12h 03mFrontier
Sun 12/148:05 amMDW - DFW
Nonstop2h 42mFrontier
Deal found 11/16$88
This Kiwi.com deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:27 pmDFW - ORD
Nonstop2h 40mFrontier
Sun 12/79:47 amORD - DFW
Nonstop2h 56mFrontier
Deal found 11/15$89
This Frontier deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:47 amDFW - MDW
Nonstop2h 17mFrontier
Mon 12/812:35 pmMDW - DFW
Nonstop2h 30mFrontier
Deal found 11/16$89
This CheapOair deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amDFW - MDW
Nonstop2h 21mFrontier
Sun 1/48:00 amMDW - DFW
Nonstop2h 42mFrontier
Deal found 11/15$90
This Mytrip deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:00 pmJFK - ORD
Nonstop2h 57mFrontier
Fri 12/196:40 amORD - JFK
Nonstop2h 24mFrontier
Deal found 11/16$91
This Kiwi.com deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:35 pmDFW - ORD
Nonstop2h 25mMultiple Airlines
Mon 12/225:15 amORD - DFW
Nonstop2h 45mMultiple Airlines
Deal found 11/16$91
This Super.com deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/201:10 pmDFW - MDW
Nonstop2h 18mFrontier
Tue 12/238:00 amMDW - DFW
Nonstop2h 42mFrontier
Deal found 11/15$91
This Super.com deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:10 pmDFW - ORD
Nonstop2h 42mFrontier
Sun 12/289:34 pmORD - DFW
Nonstop2h 46mFrontier
Deal found 11/16$92
This Kiwi.com deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/171:00 pmJFK - ORD
Nonstop2h 57mFrontier
Mon 12/226:40 amORD - JFK
Nonstop2h 24mFrontier
Deal found 11/15$93
This Kiwi.com deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/58:41 pmLGA - ORD
Nonstop2h 30mSpirit Airlines
Mon 12/84:38 pmORD - LGA
Nonstop2h 04mSpirit Airlines
Deal found 11/16$93
This Super.com deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:55 amDFW - ORD
Nonstop2h 28mFrontier
Tue 12/3010:22 pmORD - DFW
Nonstop2h 44mFrontier
Deal found 11/16$93

Cheap flight deals from North America to Illinois

Keep the following information in mind while searching for North America to Illinois flight deals. Data was last updated November 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$88
(Frontier)

One-way from

$44
(CheapOair)

Popular in

August

Cheapest in

January

Average price

$235

Good round-trip deal

$71 or less

Good one-way deal

$49 or less
Provider with most accurate pricing for New York (NYC)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Chicago (CHI) flights.
Search Deals
From North America to Illinois
Search Deals
One-way flight from North America to Illinois
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from North America to Illinois.
Search Deals
Price to beat on a one-way flight from North America to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from North America 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, Cheapflights users made 2,558,603 searches. Data last updated November 17, 2025.
Use the filters below to find and compare flights from North America to Illinois that are best for you.

Fly from

North America

Fly to

Illinois

Route

Depart

Return

Price

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Fri 11/28

4:07 pm-5:59 pm

Nonstop2h 52m

Chicago O'Hare Intl

Tue 12/2

4:22 pm-12:45 am

1 stop7h 23m

$106

DallasChicago

DFW - MDW

DFWMDW

Dallas/Fort Worth

Sat 12/27

1:10 pm-3:28 pm

Nonstop2h 18m

Chicago Midway

Sat 1/3

7:05 am-9:48 am

Nonstop2h 43m

$109

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Wed 1/21

3:35 pm-5:44 pm

Nonstop3h 09m

Chicago O'Hare Intl

Mon 1/26

7:45 am-11:10 am

Nonstop2h 25m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Sat 2/28

7:00 am-9:10 am

Nonstop3h 10m

Chicago O'Hare Intl

Mon 3/2

10:00 am-1:23 pm

Nonstop2h 23m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Wed 12/17

8:30 am-10:35 am

Nonstop3h 05m

Chicago O'Hare Intl

Mon 12/22

7:41 pm-11:10 pm

Nonstop2h 29m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Mon 12/15

5:29 pm-7:43 pm

Nonstop3h 14m

Chicago O'Hare Intl

Mon 12/22

7:41 pm-11:10 pm

Nonstop2h 29m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Tue 12/16

8:30 am-10:35 am

Nonstop3h 05m

Chicago O'Hare Intl

Mon 12/22

7:41 pm-11:10 pm

Nonstop2h 29m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Wed 12/17

8:30 am-10:35 am

Nonstop3h 05m

Chicago O'Hare Intl

Sat 12/20

8:15 pm-11:44 pm

Nonstop2h 29m

$117

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

Thu 2/5

3:35 pm-5:44 pm

Nonstop3h 09m

Chicago O'Hare Intl

Sun 2/8

7:45 am-11:10 am

Nonstop2h 25m

$117

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Mon 11/24

7:30 am-9:01 am

Nonstop2h 31m

Chicago O'Hare Intl

Mon 12/1

12:29 pm-3:29 pm

1 stop26h 00m

$121

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 60 results
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Best time to book a flight from North America to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from North America 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.

Cheapflights Insights

Everything you need to know about your flight from North America to Illinois

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

Currently, January is the cheapest month in which you can book a flight from North America to Illinois (average of $37). Flying from North America to Illinois in June is currently the most expensive (average of $80). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from NA to IL?

Find hourly flight availability from North America to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 17, 2025.

It’s typically best to fly out from North America to Illinois in the evening. Doing so could potentially save you 24% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from North America to Illinois?

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

Travelers seeking maximum savings on their North America to Illinois flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from North America to Illinois

Explore weekly flight availability from North America to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 17, 2025.

The most flights from 0NA to USIL are scheduled on a Sunday (113 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (64 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated November 17, 2025.
Read through reviews of airlines operating flights from North America to Illinois, such as Southwest, 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.
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,013 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,050 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,144 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,106 reviews
Southwest
8.0
Very good
4,244 reviews

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from North America to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from North America to Illinois?

    Departing from North America to Illinois will take you 2h 52m. The distance between North America and Illinois is about 738 mi. All flights are typically nonstop.

  • What are the cheapest airlines to fly from North America to Illinois one-way?

    $44 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and United Airlines, with prices starting from $55 and $59, respectively.

  • Can I find deals for flights from North America to Illinois that include hotel bookings?

    Yes. In addition to deals on North America to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from North America to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from North America to Illinois.

  • Can I find deals for business class flights from North America to Illinois?

    Yes. Cheapflights offers flight deals from North America to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from North America to Illinois (average of $37). Flying from North America to Illinois in June is currently the most expensive (average of $80). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for North America to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from North America to Illinois

Discover the top 10 airlines that operate flights from North America to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$206FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$59Average$185FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$79Average$213FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$91Average$181FlexibilityNo cancel feeOn-time88%
DeltaCheapest$101Average$350FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$108Average$288FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$117Average$303FlexibilityNo cancel feeOn-time63%
Breeze AirwaysCheapest$121Average$188FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$126Average$407FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$130Average$330FlexibilityNo cancel feeOn-time83%

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