Cheap flights To Northern Illinois (CHI) from $28

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Cheap Flights to Northern Illinois from $28 One Way, $57 Round Trip

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

Tue, Apr 14 - Tue, Apr 21
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$57 Roundtrip, found 10 hours ago
$57
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Tue, Apr 14 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Apr 21, priced at $57 found 10 hours ago
Tue, Mar 24 - Tue, Mar 31
EWR
Newark Liberty Intl. Airport
ORD
O'Hare Intl.
$58 Roundtrip, found 14 hours ago
$58
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Tue, Mar 24 from Newark Liberty Intl. Airport to O'Hare Intl., returning Tue, Mar 31, priced at $58 found 14 hours ago
Tue, Apr 14 - Tue, Apr 21
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$62 Roundtrip, found 10 hours ago
$62
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Tue, Apr 14 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Apr 21, priced at $62 found 10 hours ago
Sat, May 9 - Mon, May 11
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$62 Roundtrip, found 2 hours ago
$62
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, May 9 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Mon, May 11, priced at $62 found 2 hours ago
Thu, Apr 30 - Tue, May 5
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$63 Roundtrip, found 1 day ago
$63
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, May 5, priced at $63 found 1 day ago
Tue, May 12 - Sat, May 16
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$64 Roundtrip, found 9 hours ago
$64
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, May 12 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Sat, May 16, priced at $64 found 9 hours ago
Wed, Apr 15 - Tue, Apr 21
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$65 Roundtrip, found 2 hours ago
$65
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Wed, Apr 15 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Apr 21, priced at $65 found 2 hours ago
Wed, Apr 29 - Mon, May 4
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$66 Roundtrip, found 9 hours ago
$66
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Wed, Apr 29 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Mon, May 4, priced at $66 found 9 hours ago
Wed, May 13 - Tue, May 19
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$67 Roundtrip, found 14 hours ago
$67
Roundtrip
found 14 hours ago
Select Spirit Airlines flight, departing Wed, May 13 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, May 19, priced at $67 found 14 hours ago
Wed, Apr 22 - Sat, Apr 25
EWR
Newark Liberty Intl. Airport
RFD
Greater Rockford
$149 Roundtrip, found 5 days ago
$149
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Apr 22 from Newark Liberty Intl. Airport to Greater Rockford, returning Sat, Apr 25, priced at $149 found 5 days ago

Northern Illinois Flight Information

Traveling To
Northern Illinois
Destination Airport IATA Code
CHI
Number of Airlines Serving
Airlines
Frontier Airlines, Spirit Airlines, American Airlines
Flight Price
$57
Earliest Departing Flight
Latest Departing Flight

Flights Review

Mar 10, 2018

Great overall service. Smooth landing. Plane was even early.

A verified traveler
Denver to Chicago · United

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

Apr 3 - Apr 5

2 night stay

Boston (BOS) to Chicago (ORD)

Southwest Airlines • Coach

Chicago (ORD) to Boston (BOS)

JetBlue Airways • Coach
Save 100% on your flight
Price was $526, price is now $350 per person
$350
per person
found 1 day ago
Isle Casino Hotel - Bettendorf
3.0-star property

Isle Casino Hotel - Bettendorf

Apr 11 - Apr 14

3 night stay

New York (JFK) to Moline (MLI)

American Airlines • Non-stop roundtrip • Coach
Price was $605, price is now $395 per person
$395
per person
found 1 day ago
La Banque Hotel
4.0-star property

La Banque Hotel

Apr 15 - Apr 19

4 night stay

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

United • Roundtrip • Coach
Save 100% on your flight
Price was $937, price is now $626 per person
$626
per person
just found
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Northern Illinois first class flight packages

Price found within the past 48 hours. Click for updated prices.
Eurostars Magnificent Mile
4.0-star property

Eurostars Magnificent Mile

9/10 Wonderful! (3,271 reviews)

Apr 24 - Apr 26

2 night stay

Philadelphia (PHL) to Chicago (ORD)

United • Roundtrip • FirstClass
Price was $833, price is now $704 per person
$704
per person
found 1 day ago
In convenient area either by walking or uber

Reviewed on Oct 18, 2025

Level Chicago – Old Town
4.0-star property

Level Chicago – Old Town

9/10 Wonderful! (380 reviews)

Apr 24 - Apr 26

2 night stay

Philadelphia (PHL) to Chicago (ORD)

United • Roundtrip • FirstClass
Price was $899, price is now $759 per person
$759
per person
found 1 day ago
We always love staying here. Such great service and nice accommodations.

Reviewed on Nov 20, 2025

Trump International Hotel & Tower Chicago
5.0-star property

Trump International Hotel & Tower Chicago

9.4/10 Exceptional! (1,773 reviews)

Apr 24 - Apr 26

2 night stay

Philadelphia (PHL) to Chicago (ORD)

United • Roundtrip • FirstClass
Price was $1,104, price is now $933 per person
$933
per person
found 1 day ago
Food was amazing and the staff was amazing. Room was incredible! Felt like we were royalty on our visit!

Reviewed on Oct 13, 2025

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

Orbitz is your one stop for guaranteed low prices on Northern Illinois flights, as well as budget deals on hotels and rental cars. Use our state of the art mobile tools to get great deals and constant updates on the status of your trip.

Save Big On Car Rentals Too

Orbitz will find you discount air fare for flights to Northern Illinois and you can rent a car at the same time. With Orbitzyou will get a discount on the rental and have your car waiting for you when you land.

Get Free Travel Advice By Calling the Orbitz Hotline

Our experts will make things even easier by helping you to find the best budget flights to Northern Illinois Just call our toll free hotline at 1-800-649-9920 and one of our travel advisors will be happy to assist you with everything from your flight to hotel room.

Book Travel on the Fly with Orbitz on the Go

Our state of the art mobile apps will allow you to book cheap flights to Northern Illinois from your smartphone too. Discount airfare is not all; you can also find mobile-only hotel deals or check the status of your flight using this free app. So, when you’re on the go, why not take Orbitz with you?

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 $57 to $149 this week. Kicking off your journey from Dallas (DFW)? The cheapest one-way prices were just $28.
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.