Cheap Flights to Illinois from $38 (2026/2027)

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Flights
Chicago

How Much Does it Cost To Fly To Illinois?

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

Thu, Sep 3 - Sun, Sep 6
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$76 Roundtrip, found 7 hours ago
$76
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Sep 3 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Sep 6, priced at $76 found 7 hours ago
Sun, Aug 23 - Wed, Aug 26
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$98 Roundtrip, found 9 hours ago
$98
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sun, Aug 23 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Wed, Aug 26, priced at $98 found 9 hours ago
Mon, Sep 14 - Tue, Sep 15
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$108 Roundtrip, found 2 days ago
$108
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Sep 14 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Tue, Sep 15, priced at $108 found 2 days ago
Tue, Oct 13 - Mon, Oct 19
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$108 Roundtrip, found 1 day ago
$108
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Oct 13 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Mon, Oct 19, priced at $108 found 1 day ago
Tue, Sep 8 - Sun, Sep 13
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$138 Roundtrip, found 2 days ago
$138
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Sep 8 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Sun, Sep 13, priced at $138 found 2 days ago
Wed, Oct 14 - Sat, Oct 17
DFW
Dallas-Fort Worth Intl.
MDW
Midway Intl.
$140 Roundtrip, found 14 hours ago
$140
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Oct 14 from Dallas-Fort Worth Intl. to Midway Intl., returning Sat, Oct 17, priced at $140 found 14 hours ago
Tue, Sep 15 - Wed, Sep 16
ATL
Hartsfield-Jackson Atlanta Intl.
RFD
Greater Rockford
$196 Roundtrip, found 1 day ago
$196
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Sep 15 from Hartsfield-Jackson Atlanta Intl. to Greater Rockford, returning Wed, Sep 16, priced at $196 found 1 day ago
Tue, Jul 14 - Sat, Jul 18
DAL
Love Field
STL
Lambert-St. Louis Intl.
$243 Roundtrip, found 5 hours ago
$243
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Tue, Jul 14 from Love Field to Lambert-St. Louis Intl., returning Sat, Jul 18, priced at $243 found 5 hours ago
OriginDestinationTravel DatesFlights From*
LAXChicagoJuly 21 to July 28$206
LGAMolineJuly 22 to August 1$236
EWRBloomingtonJuly 15 to July 21$302
ATLPeoriaSeptember 23 to September 28$309
ATLMolineSeptember 24 to September 28$339
LAXPeoriaJuly 15 to July 22$349
LAXMolineSeptember 5 to September 12$349
ATLSavoySeptember 29 to October 6$356
LAXBloomingtonAugust 13 to August 17$439
LAXSavoyAugust 6 to August 11$475
LAXEvansvilleJuly 20 to July 25$494
DFWEvansvilleAugust 8 to August 23$507
PVGSt. LouisSeptember 8 to March 2$1,296
PVGBloomingtonSeptember 4 to February 20$1,434
PVGChicagoJuly 9 to December 24$2,296
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
ATLChicagoJune 27 to June 30$166
LAXSt. LouisJune 28 to July 1$354
LAXChicagoJune 26 to July 3$358
LAXChicagoJune 27 to July 4$397
ATLPeoriaJune 26 to June 30$398
LAXBloomingtonJune 27 to July 1$475
ATLMolineJune 28 to July 3$529
LAXRockfordJune 26 to July 3$548
DFWMolineJune 26 to June 28$691
ATLRockfordJune 28 to June 30$720
LAXMolineJune 26 to July 5$749
ATLBloomingtonJune 27 to June 27$967
LAXPeoriaJune 28 to July 2$1,015
PVGChicagoJune 27 to October 28$1,299
PEKChicagoJune 26 to July 13$1,510
*Prices include taxes and fees

Best Illinois Flight and Hotel Packages

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

Sep 3 - Sep 7

4 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Price was $751, price is now $342 per person
$342
per person
found 13 hours ago
The Emily Hotel
4.0-star property

The Emily Hotel

Aug 20 - Aug 24

4 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,100, price is now $719 per person
$719
per person
found 1 day ago
Level Chicago Fulton Market
4.0-star property

Level Chicago Fulton Market

Jul 24 - Jul 28

4 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,405, price is now $927 per person
$927
per person
found 1 day ago
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Travelers ❤️ These Illinois 🏨

Congress Plaza Hotel

Congress Plaza Hotel

3.5 out of 5
520 South Michigan Avenue Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy 2 restaurants, 2 bars/lounges, and breakfast (surcharge). Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Grant Park and Millennium Park are located nearby.
8/10 Very Good! (10,157 reviews)
"It was very hot. Leaving the hotel room was a great reprieve as it was much cooler outside. I called the front desk to see if there was a way to make the AC stronger, but they answered and hung up immediately the first 4 times I called. I tried again the next day and they told me there was a shared ..."

Reviewed on Jun 22, 2026

Opens in a new windowCongress Plaza Hotel
Hilton Chicago/Magnificent Mile Suites

Hilton Chicago/Magnificent Mile Suites

3.5 out of 5
198 E Delaware Pl Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy a fitness center, valet parking (surcharge), and a 24-hour front desk. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Michigan Avenue and Chicago Riverwalk are located nearby.
9/10 Wonderful! (4,455 reviews)
"Cleaneage rooms. Great location. Lovely staff"

Reviewed on Jun 21, 2026

Opens in a new windowHilton Chicago/Magnificent Mile Suites
Hilton Chicago O'Hare Airport

Hilton Chicago O'Hare Airport

4 out of 5
O'Hare International Airport Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy 2 restaurants, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Rosemont Theatre and Allstate Arena are located nearby.
8.4/10 Very Good! (2,316 reviews)
"Such a relaxing way to fly out of O'hare on an early am flight. Dinner at the Gaslight was delicious."

Reviewed on Jun 21, 2026

Opens in a new windowHilton Chicago O'Hare Airport
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Hyatt Regency O'Hare Chicago

Hyatt Regency O'Hare Chicago

4 out of 5
9300 Bryn Mawr Ave Rosemont IL
Book a stay at this business-friendly hotel in Rosemont. Enjoy free WiFi, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Allstate Arena and Rosemont Theatre are located nearby.
8.8/10 Excellent! (2,703 reviews)
"Amazing hotel! We will be back"

Reviewed on Jun 22, 2026

Opens in a new windowHyatt Regency O'Hare Chicago
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

How much is the cheapest flight to Illinois?
A roundtrip flight to Illinois cost as little as $76 within the last seven days. When you're ready to make a booking, we'll help you find a top deal. This price was available on Travelocity for flights to Illinois departing within the next year. Prices and availability are subject to change. Additional terms apply.
Which airlines fly to Illinois?
You'll have a choice of 15 airlines when you want to organize your flight to Illinois. Let Southwest Airlines take you there. This top carrier offers 5,737 services a month to Chicago, Illinois's premier city.
What is the cheapest month to fly to Illinois?
Splash out more money on epic experiences and less on airfares by visiting Illinois in September. This is the most affordable time to set off to this destination based on Travelocity's direct return flight demand between January and December last year. Take a peek at our list of flights and get away from it all without draining your bank account.
How can I check my flight status to Illinois?
Visit the Travelocity customer portal, Trips. You'll find almost everything related to your flight to Illinois here, including valuable information about any gate changes, flight delays and more. Keep an eye out for Trips at the top right of the Travelocity homepage. Simply sign up, log in and discover what you need. Or you can access your itinerary on the go and get real-time travel updates with the Travelocity app. You'll find all your itineraries in one convenient place, so you can quickly share details with any members of your family flying with you.
How do I find the best deals on flights to Illinois?
Being flexible with your travel dates is one of the best ways to score a fantastic deal. Travelocity makes it a snap to find your perfect fare through the "Flexible dates" feature. First, search for your flight to Illinois, then compare prices for surrounding days by clicking the Flexible dates box above. Booking ahead of time and traveling outside of peak periods will also help you save. In the last seven days, the cheapest price for a return flight to Illinois was $76 on our site. This price was available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Why should I book my flight to Illinois with Travelocity?
Look for cheap flights to Illinois with Travelocity and start arranging your next adventure. With 24/7 customer assistance during every step of your trip and a Price Match Guarantee, we take the difficulty out of reserving cheap family flights, places to stay and more. Bag a top deal today and prepare for an amazing adventure.
What are the most popular flight routes to Illinois?
To help you in your search for flights to Illinois, browse our list of some of the preferred routes:

  • Denver, CO (DEN-Denver Intl.) to O'Hare Intl. Airport (ORD) - 4,203 flights a month.
  • Minneapolis, MN (MSP-Minneapolis - St. Paul Intl.) to O'Hare Intl. Airport (ORD) - 4,155 flights a month.
  • New York, NY (LGA-LaGuardia) to O'Hare Intl. Airport (ORD) - 4,138 flights a month.

How much is a flight to Illinois on average?
Airfares for roundtrip flights to Illinois cost between $76 and $2,296 in the last seven days. The moment you see a fabulous deal, snap it up and get ready to set off on your next wonderful adventure with Travelocity. These prices were available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
How long is the average flight to Illinois?
The length of your direct flight to Illinois mostly depends on your point of departure. To give you an idea of what to expect, here are the average travel times for a handful of popular routes to Illinois:

  • Denver, CO (DEN-Denver Intl.) to O'Hare Intl. Airport (ORD) - 2 hours and 29 minutes
  • Minneapolis, MN (MSP-Minneapolis - St. Paul Intl.) to O'Hare Intl. Airport (ORD) - 2 hours and 20 minutes
  • New York, NY (LGA-LaGuardia) to O'Hare Intl. Airport (ORD) - 2 hours and 41 minutes

What can I expect on a flight to Illinois?
Factors such as which carrier you choose and where you're departing from will mostly determine your travel experience. Chances are you'll find all kinds of flights to Illinois, from cheap flights for family vacations to first class journeys. Warm meals, drinks and entertainment are usually what most airlines provide on long-haul trips.

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