$42+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ORD
Jan 14 — Jan 211
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from North America to Illinois
Cheapest flights from North America to IllinoisExplore 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 December 15, 2025.
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 December 15, 2025.
This Super.com deal was found by Cheapflights users on 12/12. 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 12/318:37 pmLGA - ORD
Nonstop2h 30mSpirit Airlines
Sat 1/105:53 pmORD - LGA
Nonstop2h 06mSpirit Airlines
Deal found 12/12![Spirit Airlines logo]()
$84
This CheapOair deal was found by Cheapflights users on 12/12. 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 12/318:37 pmLGA - ORD
Nonstop2h 30mSpirit Airlines
Thu 1/85:53 pmORD - LGA
Nonstop2h 06mSpirit Airlines
Deal found 12/12![Spirit Airlines logo]()
$85
This Super.com deal was found by Cheapflights users on 12/14. 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 12/319:10 pmATL - ORD
Nonstop2h 14mFrontier
Thu 1/84:49 pmORD - ATL
Nonstop2h 26mFrontier
Deal found 12/14![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 12/14. 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.
Wed 12/249:10 pmATL - ORD
Nonstop2h 14mFrontier
Thu 1/154:41 pmORD - ATL
Nonstop2h 28mFrontier
Deal found 12/14![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 12/12. 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 12/318:37 pmLGA - ORD
Nonstop2h 30mSpirit Airlines
Mon 1/54:38 pmORD - LGA
Nonstop2h 04mSpirit Airlines
Deal found 12/12![Spirit Airlines logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/259:10 pmATL - ORD
Nonstop2h 14mFrontier
Tue 1/62:26 pmORD - ATL
Nonstop2h 25mFrontier
Deal found 12/12![Frontier logo]()
$97
This Frontier deal was found by Cheapflights users on 12/12. 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 12/255:05 pmATL - ORD
Nonstop2h 28mFrontier
Thu 1/112:39 pmORD - ATL
Nonstop2h 16mFrontier
Deal found 12/12![Frontier logo]()
$98
This Super.com deal was found by Cheapflights users on 12/12. 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 12/3111:00 amJFK - ORD
Nonstop2h 57mFrontier
Sat 1/108:35 amORD - JFK
Nonstop2h 24mFrontier
Deal found 12/12![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 12/254:10 pmDFW - ORD
Nonstop2h 42mFrontier
Wed 12/319:34 pmORD - DFW
Nonstop2h 46mFrontier
Deal found 12/14![Frontier logo]()
$108
This Frontier deal was found by Cheapflights users on 12/12. 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.
Wed 12/315:05 pmATL - ORD
Nonstop2h 28mFrontier
Fri 1/26:00 amORD - ATL
Nonstop2h 20mFrontier
Deal found 12/12![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 12/13. 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.
Tue 12/301:35 pmDFW - ORD
Nonstop2h 25mSpirit Airlines
Tue 1/67:57 pmORD - DFW
Nonstop2h 43mSpirit Airlines
Deal found 12/13![Spirit Airlines logo]()
$109
This Frontier deal was found by Cheapflights users on 12/13. 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.
Mon 12/2910:50 pmATL - ORD
1 stop11h 12mFrontier
Wed 1/75:50 amORD - ATL
Nonstop2h 14mFrontier
Deal found 12/13![Frontier logo]()
$110
Find 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 December 15, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $68 (Kiwi.com) |
One-way from | $42 (Trip.com) |
Popular in | August |
Cheapest in | January |
Average price | $272 |
Good round-trip deal | $67 or less |
Good one-way deal | $29 or less |
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 December 15, 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
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Sun 1/18
10:46 am-12:08 pm
Nonstop2h 22m
Chicago O'Hare Intl
Tue 1/20
2:53 pm-6:16 pm
Nonstop2h 23m
$78
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Tue 1/13
8:58 am-9:03 pm
1 stop13h 05m
Chicago O'Hare Intl
Tue 1/20
7:20 am-2:20 pm
1 stop6h 00m
$99
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Wed 5/13
12:59 pm-2:41 pm
Nonstop2h 42m
Chicago O'Hare Intl
Sun 5/17
9:04 am-12:04 pm
Nonstop2h 00m
$103
NewarkChicago
EWR - ORD
EWRORD
Newark
Mon 1/19
9:05 pm-10:42 pm
Nonstop2h 37m
Chicago O'Hare Intl
Wed 1/21
10:48 am-11:27 pm
1 stop11h 39m
$112
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Sun 1/18
3:40 pm-4:55 pm
Nonstop2h 15m
Chicago O'Hare Intl
Wed 1/21
6:10 pm-9:15 pm
Nonstop2h 05m
$137
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Tue 2/24
7:39 am-8:50 am
Nonstop2h 11m
Chicago O'Hare Intl
Sat 2/28
11:18 am-2:20 pm
Nonstop2h 02m
$137
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Fri 5/8
12:59 pm-2:41 pm
Nonstop2h 42m
Chicago O'Hare Intl
Tue 5/12
5:15 am-7:00 pm
1 stop12h 45m
$137
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Wed 1/28
5:25 pm-7:36 pm
Nonstop3h 11m
Chicago O'Hare Intl
Wed 2/4
9:40 am-12:56 pm
Nonstop2h 16m
$139
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Mon 2/23
9:15 pm-11:10 pm
Nonstop2h 55m
Chicago O'Hare Intl
Wed 2/25
12:41 pm-4:02 pm
Nonstop2h 21m
$139
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Fri 1/16
9:15 am-11:03 am
Nonstop2h 48m
Chicago O'Hare Intl
Sun 1/18
1:00 pm-4:13 pm
Nonstop2h 13m
$139
Showing 1-10 of 60 results
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 $44). Flying from North America to Illinois in June is currently the most expensive (average of $78). 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 December 15, 2025.
It’s typically best to fly out from North America to Illinois in the evening. Doing so could potentially save you 27% 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 December 15, 2025.
The most flights from 0NA to USIL are scheduled on a Monday (90 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 December 15, 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.
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
7.9
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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.
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 December 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$211 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$58 | Average$189 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$75 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$91 | Average$186 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$101 | Average$351 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$105 | Average$228 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$108 | Average$288 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$117 | Average$297 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$118 | Average$400 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$128 | Average$431 | FlexibilityNo cancel fee | On-time71% |