Cheap flights To Northern Illinois (CHI) from $76

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

Cheap Flights to Northern Illinois from $76 One Way, $128 Round Trip

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

Wed, Jul 8 - Sat, Jul 11
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$128 Roundtrip, found 1 day ago
$128
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Jul 8 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Sat, Jul 11, priced at $128 found 1 day ago
Wed, Jul 8 - Tue, Jul 14
CLT
Charlotte-Douglas Intl.
ORD
O'Hare Intl.
$190 Roundtrip, found 2 hours ago
$190
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, Jul 8 from Charlotte-Douglas Intl. to O'Hare Intl., returning Tue, Jul 14, priced at $190 found 2 hours ago
Wed, Jun 17 - Wed, Jul 8
SAN
San Diego Intl.
ORD
O'Hare Intl.
$215 Roundtrip, found 5 days ago
$215
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Jun 17 from San Diego Intl. to O'Hare Intl., returning Wed, Jul 8, priced at $215 found 5 days ago
Tue, Jun 9 - Tue, Jun 9
SAN
San Diego Intl.
ORD
O'Hare Intl.
$252 Roundtrip, found 11 hours ago
$252
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Tue, Jun 9 from San Diego Intl. to O'Hare Intl., returning Tue, Jun 9, priced at $252 found 11 hours ago
Wed, Jun 10 - Sat, Jun 13
CLD
McClellan-Palomar
ORD
O'Hare Intl.
$253 Roundtrip, found 5 days ago
$253
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jun 10 from McClellan-Palomar to O'Hare Intl., returning Sat, Jun 13, priced at $253 found 5 days ago
Sat, Sep 5 - Tue, Sep 15
CLT
Charlotte-Douglas Intl.
RFD
Greater Rockford
$258 Roundtrip, found 14 hours ago
$258
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Sep 5 from Charlotte-Douglas Intl. to Greater Rockford, returning Tue, Sep 15, priced at $258 found 14 hours ago
Sat, Sep 5 - Tue, Sep 15
CLT
Charlotte-Douglas Intl.
ORD
O'Hare Intl.
$259 Roundtrip, found 14 hours ago
$259
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Sep 5 from Charlotte-Douglas Intl. to O'Hare Intl., returning Tue, Sep 15, priced at $259 found 14 hours ago
Sat, Sep 5 - Tue, Sep 15
CLT
Charlotte-Douglas Intl.
ORD
O'Hare Intl.
$279 Roundtrip, found 14 hours ago
$279
Roundtrip
found 14 hours ago
Select Delta flight, departing Sat, Sep 5 from Charlotte-Douglas Intl. to O'Hare Intl., returning Tue, Sep 15, priced at $279 found 14 hours ago
Sat, Jun 13 - Sat, Jun 20
DFW
Dallas-Fort Worth Intl.
RFD
Greater Rockford
$280 Roundtrip, found 5 days ago
$280
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Jun 13 from Dallas-Fort Worth Intl. to Greater Rockford, returning Sat, Jun 20, priced at $280 found 5 days ago
Sat, May 23 - Thu, May 28
CLT
Charlotte-Douglas Intl.
ORD
O'Hare Intl.
$280 Roundtrip, found 12 hours ago
$280
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Sat, May 23 from Charlotte-Douglas Intl. to O'Hare Intl., returning Thu, May 28, priced at $280 found 12 hours ago

Northern Illinois Flight Information

Traveling To
Northern Illinois
Destination Airport IATA Code
CHI
Number of Airlines Serving
Airlines
Frontier Airlines, American Airlines, Alaska Airlines, United, Delta, Southwest Airlines
Flight Price
$128
Earliest Departing Flight
Latest Departing Flight

Book Your Flight & Hotel Together & Save

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

Jul 3 - Jul 5

2 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $674, price is now $472 per person
$472
per person
found 1 day ago
The Langham, Chicago
5.0-star property

The Langham, Chicago

Jul 2 - Jul 5

3 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,224, price is now $848 per person
$848
per person
found 1 day ago
Level Chicago - River North
4.0-star property

Level Chicago - River North

Jul 2 - Jul 5

3 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,743, price is now $1,231 per person
$1,231
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Atlanta to Northern Illinois
View all trips

Northern Illinois first class flight packages

Price found within the past 48 hours. Click for updated prices.
Swissotel - Chicago
4.5-star property

Swissotel - Chicago

9/10 Wonderful! (3,303 reviews)

Jul 9 - Jul 13

4 night stay

Atlanta (ATL) to Chicago (ORD)

Delta • FirstClass

Chicago (ORD) to Atlanta (ATL)

United • FirstClass
Price was $1,582, price is now $1,181 per person
$1,181
per person
found 6 hours ago
Great stay and we highly recommend. We will be back.

Reviewed on Apr 21, 2026

Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

9.4/10 Exceptional! (4,127 reviews)

Jul 9 - Jul 13

4 night stay

Atlanta (ATL) to Chicago (ORD)

Delta • FirstClass

Chicago (ORD) to Atlanta (ATL)

United • FirstClass
Price was $1,771, price is now $1,295 per person
$1,295
per person
found 6 hours ago
Great location, clean, and great breakfast buffet

Reviewed on Mar 8, 2026

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! (2,489 reviews)

Jul 9 - Jul 13

4 night stay

Atlanta (ATL) to Chicago (ORD)

Delta • FirstClass

Chicago (ORD) to Atlanta (ATL)

United • FirstClass
Price was $1,907, price is now $1,438 per person
$1,438
per person
found 6 hours ago
Really nice property, rooms were clean, and staff was extremely friendly

Reviewed on May 5, 2026

Don't see what you're looking for?
See all available trips from Atlanta to Northern Illinois
View all trips

Northern Illinois

Are you in the mood for a cruise? Shop Orbitz today for cheap cruises and flights to Northern Illinois. Our award-winning cruise site features exclusive offers, information for first-timers and top destinations and activities. Make discount domestic and international travel plans in an instant with cutting-edge mobile tools from Orbitz.

Top Pick

Orbitz holds a “Best of the Web” Cruise Site Award from Forbes Magazine. You won’t find better deals anywhere on low cost cruises and low fare Northern Illinois flights. Our Customer Care and guaranteed low prices make Orbitz the team to beat in budget cruises and air ticket sales.

Exclusive Offers

Register for Orbitz email updates and our cruise experts will notify you of bargain tickets on cruises as they’re posted. Install our free mobile apps on your iPad, iPhone or Android for easy booking and mobile-only savings on flights to Northern Illinois. Visit www.Orbitz.com to learn more about these amazing benefits and our 110% Best Price Guarantee.

First-Timers

Are you and your family cruise newbies? Orbitz offers Cruising 101 and Cruise FAQ to answer any questions you may have. Book your cruise and air travel with Orbitz On the Go for greater savings on Northern Illinois flights.

Ports and Play

Be sure to check our cruise page for free shore excursions, onboard spending, balcony upgrades and other perks. Orbitz offers last-minute, luxury, weekend and summer cruises. You can even designate which port you want to sail from and pre-book on-shore activities. Get there on the cheap with discounts on flights to Northern Illinois and Northern Illinois flights. Get more bang for your travel buck at Orbitz.

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 $128 to $280 this week. Kicking off your journey from Dallas (DFW)? The cheapest one-way prices were just $76.
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.