Cheap flights To Northern Illinois (CHI) from $39

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Cheap Flights to Northern Illinois from $39 One Way, $78 Round Trip

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Thu, Oct 15 - Sun, Oct 18
BNA
Nashville Intl.
RFD
Greater Rockford
$78 Roundtrip, found 1 day ago
$78
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Thu, Oct 15 from Nashville Intl. to Greater Rockford, returning Sun, Oct 18, priced at $78 found 1 day ago
Thu, Sep 24 - Sun, Sep 27
BNA
Nashville Intl.
RFD
Greater Rockford
$81 Roundtrip, found 20 hours ago
$81
Roundtrip
found 20 hours ago
Select Allegiant Air flight, departing Thu, Sep 24 from Nashville Intl. to Greater Rockford, returning Sun, Sep 27, priced at $81 found 20 hours ago
Thu, Sep 17 - Sun, Sep 20
BNA
Nashville Intl.
RFD
Greater Rockford
$84 Roundtrip, found 1 hour ago
$84
Roundtrip
found 1 hour ago
Select Allegiant Air flight, departing Thu, Sep 17 from Nashville Intl. to Greater Rockford, returning Sun, Sep 20, priced at $84 found 1 hour ago
Thu, Sep 24 - Sun, Sep 27
BNA
Nashville Intl.
RFD
Greater Rockford
$87 Roundtrip, found 1 day ago
$87
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Thu, Sep 24 from Nashville Intl. to Greater Rockford, returning Sun, Sep 27, priced at $87 found 1 day ago
Thu, Oct 8 - Sun, Oct 11
BNA
Nashville Intl.
RFD
Greater Rockford
$95 Roundtrip, found 19 hours ago
$95
Roundtrip
found 19 hours ago
Select Allegiant Air flight, departing Thu, Oct 8 from Nashville Intl. to Greater Rockford, returning Sun, Oct 11, priced at $95 found 19 hours ago
Thu, Oct 22 - Wed, Oct 28
DEN
Denver Intl.
ORD
O'Hare Intl.
$110 Roundtrip, found 1 day ago
$110
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Oct 22 from Denver Intl. to O'Hare Intl., returning Wed, Oct 28, priced at $110 found 1 day ago
Thu, Oct 1 - Thu, Oct 29
MSP
Minneapolis - St. Paul Intl.
ORD
O'Hare Intl.
$117 Roundtrip, found 5 hours ago
$117
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Oct 1 from Minneapolis - St. Paul Intl. to O'Hare Intl., returning Thu, Oct 29, priced at $117 found 5 hours ago
Wed, Sep 30 - Thu, Oct 29
MSP
Minneapolis - St. Paul Intl.
ORD
O'Hare Intl.
$117 Roundtrip, found 5 hours ago
$117
Roundtrip
found 5 hours ago
Select United flight, departing Wed, Sep 30 from Minneapolis - St. Paul Intl. to O'Hare Intl., returning Thu, Oct 29, priced at $117 found 5 hours ago
Wed, Sep 30 - Thu, Oct 29
MSP
Minneapolis - St. Paul Intl.
ORD
O'Hare Intl.
$117 Roundtrip, found 5 hours ago
$117
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, Sep 30 from Minneapolis - St. Paul Intl. to O'Hare Intl., returning Thu, Oct 29, priced at $117 found 5 hours ago
Thu, Nov 5 - Sun, Nov 8
MSP
Minneapolis - St. Paul Intl.
ORD
O'Hare Intl.
$147 Roundtrip, just found
$147
Roundtrip
just found
Select Sun Country Airlines flight, departing Thu, Nov 5 from Minneapolis - St. Paul Intl. to O'Hare Intl., returning Sun, Nov 8, priced at $147 just found

Northern Illinois Flight Information

Traveling To
Northern Illinois
Destination Airport IATA Code
CHI
Number of Airlines Serving
Airlines
Allegiant Air, Frontier Airlines, American Airlines, Delta, United, Sun Country Airlines
Flight Price
$78
Earliest Departing Flight
Latest Departing Flight

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Northern Illinois economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

Oct 2 - Oct 4

2 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $989, price is now $690 per person
$690
per person
found 1 day ago
Level Chicago Fulton Market
4.0-star property

Level Chicago Fulton Market

Oct 11 - Oct 15

4 night stay

Atlanta (ATL) to Chicago (ORD)

American Airlines • Coach

Chicago (ORD) to Atlanta (ATL)

Frontier Airlines • Coach
Save 100% on your flight
Price was $1,697, price is now $1,100 per person
$1,100
per person
found 1 day ago
Sable at Navy Pier Chicago, Curio Collection by Hilton
4.0-star property

Sable at Navy Pier Chicago, Curio Collection by Hilton

Oct 15 - Oct 19

4 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,491, price is now $1,033 per person
$1,033
per person
found 1 day ago
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Northern Illinois business class flight packages

Price found within the past 48 hours. Click for updated prices.
Sable at Navy Pier Chicago, Curio Collection by Hilton
4.0-star property

Sable at Navy Pier Chicago, Curio Collection by Hilton

9.4/10 Exceptional! (2,654 reviews)

Oct 22 - Oct 26

4 night stay

Los Angeles (LAX) to Chicago (ORD)

Frontier Airlines • Roundtrip • BusinessClass
Price was $1,512, price is now $1,151 per person
$1,151
per person
found 1 day ago

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (5,106 reviews)

Oct 22 - Oct 26

4 night stay

Los Angeles (LAX) to Chicago (ORD)

Frontier Airlines • Roundtrip • BusinessClass
Save 100% on your flight
Price was $1,748, price is now $1,226 per person
$1,226
per person
found 1 day ago
Love the RIU! The room was spacious, clean and the staff is very welcoming. The RIU is centrally located within the downtown area. ( This was a huge plus) Take advantage of the breakfast on the 2nd floor! Great way to start your morning and get fueled up for the day! -Highly recommend the rooftop bar, but make reservations and ask for seating on the ledge bar for the best night time view experience. (Side note; the food is bar food and not really a place to have a good meal. But the drinks are fantastic and nonalcoholic are available) Tired at the end of the day…then go to the lobby bar have a drink and sit in the lounge and relax. Highly recommended the stay!

Reviewed on Sep 1, 2026

The Talbott, Autograph Collection
4.5-star property

The Talbott, Autograph Collection

9.4/10 Exceptional! (159 reviews)

Oct 22 - Oct 26

4 night stay

Los Angeles (LAX) to Chicago (ORD)

Frontier Airlines • Roundtrip • BusinessClass
Price was $1,529, price is now $1,159 per person
$1,159
per person
found 1 day ago

Don't see what you're looking for?
See all available trips from Los Angeles to Northern Illinois
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Northern Illinois first class flight packages

Price found within the past 48 hours. Click for updated prices.
Fairmont Chicago at Millennium Park
4.5-star property

Fairmont Chicago at Millennium Park

8.8/10 Excellent! (2,341 reviews)

Oct 3 - Oct 5

2 night stay

Newark Liberty Intl. Airport (EWR) to Chicago (ORD)

American Airlines • Roundtrip • FirstClass
Price was $1,033, price is now $888 per person
$888
per person
found 1 day ago
I booked this hotel through Expedia and when I checked in, I was told I was going to be charged $125 that would be refunded to me after my stay if the room was in good condition. I then got a notification that the entire cost of the trip was taken out of my account when it had already paid, so over $1000 was taken away from me that it wasn’t expecting. I did not get the money back until I checked out.

Reviewed on Sep 1, 2026

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (5,106 reviews)

Oct 3 - Oct 5

2 night stay

Newark Liberty Intl. Airport (EWR) to Chicago (ORD)

American Airlines • Roundtrip • FirstClass
Price was $1,364, price is now $1,042 per person
$1,042
per person
found 1 day ago
Love the RIU! The room was spacious, clean and the staff is very welcoming. The RIU is centrally located within the downtown area. ( This was a huge plus) Take advantage of the breakfast on the 2nd floor! Great way to start your morning and get fueled up for the day! -Highly recommend the rooftop bar, but make reservations and ask for seating on the ledge bar for the best night time view experience. (Side note; the food is bar food and not really a place to have a good meal. But the drinks are fantastic and nonalcoholic are available) Tired at the end of the day…then go to the lobby bar have a drink and sit in the lounge and relax. Highly recommended the stay!

Reviewed on Sep 1, 2026

Trump International Hotel & Tower Chicago
5.0-star property

Trump International Hotel & Tower Chicago

9.6/10 Exceptional! (2,003 reviews)

Oct 3 - Oct 5

2 night stay

Newark Liberty Intl. Airport (EWR) to Chicago (ORD)

American Airlines • Roundtrip • FirstClass
Price was $1,323, price is now $1,104 per person
$1,104
per person
found 1 day ago

Don't see what you're looking for?
See all available trips from Newark Liberty Intl. Airport to Northern Illinois
View all trips

Northern Illinois

Why search for low cost fares on your flights to Northern Illinois when Orbitz offers the guaranteed lowest prices on foreign and domestic flights? When you travel with Orbitz you can benefit from:

Bargain Flights to Northern Illinois

Orbitz offers massive discounts and substantial last-minute savings on your Northern Illinois flights. Orbitz ensures that you can find, plan and reserve your flights any destination with ease, all while enjoying the guaranteed lowest prices available anywhere.

Cutting-Edge Mobile Tools to Keep You In The Know

Orbitz sends you free alerts and updates on your Northern Illinois flight wherever you are in the world. Once you have downloaded the free app for your iPhone, Android, or iPad, you can review or alter any travel plans that you have made or even book a future flight for business or pleasure. If you need to reserve a hotel room when booking your flight, you will find exclusive deals on our mobile site.

Frequent Flyer Program Enrolment

Orbitz finds you the lowest fares, but you can still add your miles to your frequent flyer program to earn miles or points on selected flights to Northern Illinois. When making your booking, reference your frequent flyer number to receive discounts in the future.

Outstanding Customer Service

Orbitz values your business and wants to ensure that all of your flights are as easy as possible to book. If you have booked a flight to Northern Illinois but need to cancel it, you may be able to do so online. If you have any questions or need help, the dedicated Orbitz customer service team is always standing by.

Frequently asked questions

What is the best airport to fly to in Northern Illinois?
Williamson County Regional Airport (MWA) is the major gateway for this terrific destination. Once you've stepped out of the terminal, the possibilities are endless when it comes to adventuring around Northern Illinois.
How much is a flight to Northern Illinois?
Travelers from far and wide bagged round-trip bargains ranging from $78 to $147 this week. Kicking off your journey from Nashville (BNA)? The cheapest one-way prices were just $39.
How to book the cheapest flight to Northern Illinois?
Scoring cheap flights to Northern Illinois is as easy as booking with Orbitz. But if you'd like to make sure you're walking away with the best flight deals around, here are some tips to keep in mind:

  • Departing from or landing at nearby airports can often be more affordable. Enter your preferred departure and arrival points. Next, select the 'Nearby airports' function below to explore your options.
  • Similarly, click on the 'Show flexible dates' link to compare the prices on days either side of your chosen departure. It's possible to find cheaper flight deals if your travel dates are flexible.
  • Select 'Show options' to narrow down your search results. You can pick your preferred seating class and airline here. Under 'Sort & Filter' to the left, you can even specify whether you'd like to fly in the morning, afternoon or evening.
  • The early bird gets the best savings, so purchase your seats once you've settled on your travel dates. The most affordable fares get snapped up first and prices normally increase as the departure date nears.
  • Consider bundling your hotels, flights and car rentals into an Orbitz package to make your dollar go further.
  • Don't fly during the busy season if you can. By avoiding summer, school vacations and other popular dates, you can save big on your airfares.

What is the best time to book a flight to Northern Illinois?
Book in January, February or August for unbeatable fares to Northern Illinois. Once you've found a bargain, lock it in — cheap flights are known to appear and then vanish in the click of a button.
What day of the week is the cheapest to book a flight to Northern Illinois?
In general, Tuesdays, Wednesdays and Saturdays are the cheapest days of the week to book a flight to Northern Illinois. If you want the best airfares, search across those days and you're likely to catch an excellent flight deal.
What is the cheapest day of the week to fly to Northern Illinois?
You can land cheap flights to Northern Illinois by flying out on a Monday, according to Orbitz data from 2020. Tuesday is also more affordable, while Saturday has the most costly ticket prices. Whether you prefer to save a bundle or fly out on whichever day is convenient, you'll always get a terrific deal with Orbitz.
What is the cheapest month to fly to Northern Illinois?
Consider traveling in August if you don't want to put a dent in your budget. Orbitz data has found that it's generally the best month for cheap flights to Northern Illinois. June is when fares really go up.
Which airlines allow free cancellation?
When you search for flights on Orbitz, select "Filter by flexible change policies." This filter will quickly find all the airlines offering free cancellation within 24 hours of booking and no change fees. That means you can relax knowing that if your travel dates change, your flight can too.
What do I need for the flight to Northern Illinois?
Flying can be fun with a little pre-planning! Make your flight a relaxing one with these helpful tips:

  • Whether you print it out or use an electronic one, you'll need your boarding pass to step foot on the plane. You'll also need some kind of government-issued photo identification. If you're flying internationally, make sure your passport is valid and you've looked into visa requirements.
  • Take some activities to keep you amused on your journey to Northern Illinois. Books, magazines and electronic gadgets like laptops and tablets are good ideas. Be sure to take a refillable water bottle with you too. Even on a short flight, it's important to keep well-hydrated.
  • It can get very cool on the plane. If you'd prefer not to shiver your way through the flight, layer up.

How many direct flights are there to Northern Illinois?
With 13 direct flights each month, getting to Northern Illinois doesn't have to be long and stressful. Cape Air offers nonstop services to this bustling destination.
How do I get cheap first-class/business deals to Northern Illinois?
If you think a business or first-class airfare is beyond your grasp, think again. Here are some terrific tips to help you book a premium flight to Northern Illinois for less:

  • Flexibility is everything. By being open to different travel dates, you'll have more chances of spotting a sale on first or business-class airfares.
  • Find a budget airline that has business-class seats. They usually come with more space and a glass of bubbly — and a more appealing price.
  • Bid for an upgrade in online auctions (if available) or upgrade your seat through your frequent flyer program.

What is the best time to go to Northern Illinois?
Northern Illinois is a wonderful getaway destination year-round, but the most popular months are June, July and August. If you're into warm weather, make your way there during the summer months. Like most places in the Northern Hemisphere, the summer season commences June 20. At this time, temperatures usually float between 65 ºF and 80 ºF during the daytime.

More to Explore

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.