$55+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ORD
Feb 27 — Mar 61
1 adult, Economy
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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 January 28, 2026.
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 January 28, 2026.
This Frontier deal was found by Cheapflights users on 1/27. 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 4/309:10 am
DFW
- ORD
Nonstop2h 32m
Frontier
Mon 5/45:11 am
ORD
- DFW
Nonstop2h 49m
Frontier
Deal found 1/27![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 1/28. 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 5/612:30 pm
DFW
- ORD
Nonstop2h 41m
Frontier
Sat 5/94:55 pm
ORD
- DFW
Nonstop3h 02m
Frontier
Deal found 1/28![Frontier logo]()
$84
This Frontier deal was found by Cheapflights users on 1/27. 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 4/2912:30 pm
DFW
- ORD
Nonstop2h 41m
Frontier
Fri 5/15:11 am
ORD
- DFW
Nonstop2h 49m
Frontier
Deal found 1/27![Frontier logo]()
$85
This Expedia deal was found by Cheapflights users on 1/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:42 pm
DFW
- ORD
Nonstop2h 35m
Multiple Airlines
Mon 3/28:16 pm
ORD
- DFW
1 stop13h 42m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$86
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:42 pm
DFW
- ORD
Nonstop2h 35m
Multiple Airlines
Wed 2/258:16 pm
ORD
- DFW
1 stop13h 42m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$88
This Booking.com deal was found by Cheapflights users on 1/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:02 pm
EWR
- ORD
1 stop10h 11m
Spirit Airlines
Wed 2/258:16 pm
ORD
- EWR
1 stop13h 41m
Spirit Airlines
Deal found 1/28![Spirit Airlines logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 4/2912:30 pm
DFW
- ORD
Nonstop2h 41m
Multiple Airlines
Wed 6/37:20 pm
ORD
- DFW
Nonstop2h 46m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$89
This Spirit deal was found by Cheapflights users on 1/25. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1211:05 pm
EWR
- ORD
Nonstop2h 35m
Spirit Airlines
Mon 2/166:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 1/25![Spirit Airlines logo]()
$90
This Frontier deal was found by Cheapflights users on 1/26. 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.
Sat 2/218:42 pm
DFW
- ORD
Nonstop2h 35m
Frontier
Sat 2/284:29 pm
ORD
- DFW
Nonstop3h 01m
Frontier
Deal found 1/26![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Sun 2/84:04 pm
JFK
- ORD
Nonstop3h 00m
Frontier
Mon 2/912:05 pm
ORD
- JFK
Nonstop2h 24m
Frontier
Deal found 1/26![Frontier logo]()
$91
This Spirit deal was found by Cheapflights users on 1/27. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:02 pm
EWR
- ORD
1 stop8h 09m
Spirit Airlines
Fri 2/276:51 pm
ORD
- EWR
Nonstop2h 09m
Spirit Airlines
Deal found 1/27![Spirit Airlines logo]()
$91
This Priceline deal was found by Cheapflights users on 1/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/184:59 pm
LGA
- ORD
1 stop7h 48m
Spirit Airlines
Wed 2/255:58 pm
ORD
- LGA
Nonstop2h 01m
Spirit Airlines
Deal found 1/28![Spirit Airlines logo]()
$91
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 January 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $83 (Frontier) |
One-way from | $55 (Super.com) |
Popular in | August |
Cheapest in | January |
Average price | $187 |
Good round-trip deal | $72 or less |
Good one-way deal | $48 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 January 28, 2026.
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
NewarkChicago
EWR - ORD
EWRORD
Newark
Thu 2/12
11:05 pm-12:40 am
Nonstop2h 35m
Chicago O'Hare Intl
Mon 2/16
6:51 pm-10:00 pm
Nonstop2h 09m
$90
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Sun 3/8
7:40 am-9:22 am
Nonstop2h 42m
Chicago O'Hare Intl
Wed 3/11
12:44 pm-11:21 pm
1 stop9h 37m
$98
NewarkChicago
EWR - ORD
EWRORD
Newark
Tue 4/14
10:39 pm-12:07 am
Nonstop2h 28m
Chicago O'Hare Intl
Tue 4/21
4:47 pm-7:55 pm
Nonstop2h 08m
$100
NewarkChicago
EWR - ORD
EWRORD
Newark
Sat 2/7
9:05 pm-10:42 pm
Nonstop2h 37m
Chicago O'Hare Intl
Sun 2/8
4:38 pm-7:46 pm
Nonstop2h 08m
$103
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Thu 3/12
7:30 am-9:10 am
Nonstop2h 40m
Chicago O'Hare Intl
Sat 3/21
6:01 pm-8:59 pm
Nonstop1h 58m
$105
NewarkChicago
EWR - ORD
EWRORD
Newark
Thu 5/7
9:05 pm-10:43 pm
Nonstop2h 38m
Chicago O'Hare Intl
Sun 5/10
4:47 pm-7:55 pm
Nonstop2h 08m
$123
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Sat 2/7
7:30 am-9:12 am
Nonstop2h 42m
Chicago O'Hare Intl
Sun 2/8
8:43 pm-10:00 am
1 stop12h 17m
$125
New YorkChicago
LGA - ORD
LGAORD
New York LaGuardia
Thu 5/21
12:59 pm-2:41 pm
Nonstop2h 42m
Chicago O'Hare Intl
Tue 5/26
7:05 am-7:00 pm
1 stop10h 55m
$136
New YorkChicago
JFK - ORD
JFKORD
New York John F Kennedy Intl
Wed 2/25
3:52 pm-5:43 pm
Nonstop2h 51m
Chicago O'Hare Intl
Sat 2/28
7:00 am-10:34 am
Nonstop2h 34m
$137
NewarkChicago
EWR - ORD
EWRORD
Newark
Tue 2/24
1:00 pm-2:43 pm
Nonstop2h 43m
Chicago O'Hare Intl
Wed 2/25
2:30 pm-5:50 pm
Nonstop2h 20m
$137
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 $46). 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 January 28, 2026.
It’s typically best to fly out from North America to Illinois in the morning. Doing so could potentially save you 16% 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 January 24, 2026.
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. Wednesday 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 January 28, 2026.
The most flights from 0NA to USIL are scheduled on a Monday (90 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (67 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 January 28, 2026.
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.
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Food
7.0
Overall
8.0
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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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 January 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$43 | Average$186 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$45 | Average$162 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$68 | Average$223 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$68 | Average$179 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$80 | Average$337 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$101 | Average$277 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$117 | Average$290 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$379 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$121 | Average$178 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$128 | Average$426 | FlexibilityNo cancel fee | On-time71% |