Cheap Flights to Illinois from $28 (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, Aug 27 - Tue, Sep 1
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 1 day ago
$56
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Aug 27 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Sep 1, priced at $56 found 1 day ago
Wed, Sep 23 - Tue, Sep 29
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$66 Roundtrip, found 1 hour ago
$66
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Sep 23 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Tue, Sep 29, priced at $66 found 1 hour ago
Tue, Aug 11 - Tue, Aug 11
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Aug 11 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Tue, Aug 11, priced at $66 just found
Sat, Jul 25 - Sat, Jul 25
PHL
Philadelphia Intl.
ORD
O'Hare Intl.
$108 Roundtrip, found 2 days ago
$108
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Jul 25 from Philadelphia Intl. to O'Hare Intl., returning Sat, Jul 25, priced at $108 found 2 days ago
Sat, Jun 20 - Tue, Jun 23
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$109 Roundtrip, just found
$109
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jun 20 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Tue, Jun 23, priced at $109 just found
Sat, Sep 12 - Sat, Sep 19
DFW
Dallas-Fort Worth Intl.
MDW
Midway Intl.
$132 Roundtrip, found 2 hours ago
$132
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Sep 12 from Dallas-Fort Worth Intl. to Midway Intl., returning Sat, Sep 19, priced at $132 found 2 hours ago
Sat, Sep 19 - Tue, Sep 22
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$132 Roundtrip, just found
$132
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 19 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Sep 22, priced at $132 just found
Tue, Jul 14 - Tue, Jul 21
TTN
Mercer
STL
Lambert-St. Louis Intl.
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jul 14 from Mercer to Lambert-St. Louis Intl., returning Tue, Jul 21, priced at $195 found 2 days ago
Wed, Jul 1 - Wed, Jul 8
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Jul 1 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Wed, Jul 8, priced at $195 found 2 days ago
Wed, Jul 1 - Sat, Jul 4
ATL
Hartsfield-Jackson Atlanta Intl.
RFD
Greater Rockford
$201 Roundtrip, found 4 days ago
$201
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jul 1 from Hartsfield-Jackson Atlanta Intl. to Greater Rockford, returning Sat, Jul 4, priced at $201 found 4 days ago
Tue, Jul 21 - Thu, Jul 23
DAL
Love Field
STL
Lambert-St. Louis Intl.
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Jul 21 from Love Field to Lambert-St. Louis Intl., returning Thu, Jul 23, priced at $261 found 1 day ago
OriginDestinationTravel DatesFlights From*
ATLSt. LouisJuly 30 to August 2$56
ATLChicagoAugust 11 to August 11$66
LAXSt. LouisAugust 20 to August 25$222
ATLEvansvilleAugust 25 to August 30$339
LAXMolineJuly 24 to July 28$349
LAXSpringfieldAugust 20 to August 22$431
LAXBloomingtonJune 20 to June 27$445
LAXPeoriaJune 26 to June 27$460
LAXSavoyJune 20 to June 27$504
LAXEvansvilleAugust 13 to August 14$815
PVGSt. LouisJune 21 to June 29$1,481
PVGSavoyJuly 1 to July 11$1,568
PVGBloomingtonJuly 1 to July 11$1,828
PVGMolineJune 16 to June 17$1,860
PVGChicagoJuly 18 to August 5$2,123
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
DFWChicagoMay 24 to May 28$251
LGASt. LouisMay 24 to May 27$327
ATLChicagoMay 24 to May 27$334
LAXSt. LouisMay 24 to May 28$378
LAXChicagoMay 23 to May 27$404
ATLSt. LouisMay 23 to May 25$419
ATLChicagoMay 24 to June 3$423
LAXChicagoMay 23 to May 27$423
JFKPeoriaMay 23 to May 25$432
JFKBloomingtonMay 23 to May 25$478
ATLRockfordMay 22 to May 29$493
LAXRockfordMay 22 to May 27$506
LAXSavoyMay 22 to May 24$633
EWRMolineMay 22 to May 25$645
PVGChicagoMay 24 to May 31$1,522
*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

Jun 24 - Jun 27

3 night stay

Atlanta (ATL) to St. Louis (STL)

Delta • Coach

St. Louis (STL) to Atlanta (ATL)

Frontier Airlines • Coach
Price was $970, price is now $457 per person
$457
per person
found 1 day ago
Hotel Riu Plaza Chicago
4.0-star property

Hotel Riu Plaza Chicago

Jul 3 - Jul 7

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 $1,054, price is now $662 per person
$662
per person
found 1 day ago
Level Chicago – Old Town
4.0-star property

Level Chicago – Old Town

Aug 6 - Aug 9

3 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $995, price is now $648 per person
$648
per person
found 10 hours ago
Don't see what you're looking for?
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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! (10,170 reviews)
"This is one of those grand old hotels that used to be amazing, but has now fallen on very hard times. There's a reason it is one of the cheapest (though still expensive) hotels in the Chicago Loop. The staff seemed absent or disinterested, the facility has peeling paint everywhere, and the vibe is ..."

Reviewed on May 20, 2026

Opens in a new windowCongress Plaza Hotel
Hotel Riu Plaza Chicago

Hotel Riu Plaza Chicago

4 out of 5
150 East Ontario Street Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy free breakfast, free WiFi, and 2 bars/lounges. Popular attractions Michigan Avenue and Chicago Riverwalk are located nearby.
9.4/10 Exceptional! (4,197 reviews)
"Very nice hotel. Great Breakfast. Comfortable bed, lots of towels. Good cleaning, however could be better. Nice staff. Great location. If I return to Chicago, l’ll come back to this Hotel."

Reviewed on May 20, 2026

Opens in a new windowHotel Riu Plaza Chicago
Hotel Felix River North/Magnificent Mile

Hotel Felix River North/Magnificent Mile

4 out of 5
111 W Huron St Chicago IL
Book a stay at this boutique hotel in Chicago. Enjoy breakfast (surcharge), a 24-hour health club, and valet parking (surcharge). Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Michigan Avenue and Chicago Riverwalk are located nearby.
8.2/10 Very Good! (2,706 reviews)
"The room was clean but pretty basic. It was good overall but we did have an issue with the a/c switching off in the middle of the night. Unfortunately the hotel didn’t have any fans to remedy that situation. Other than that we had a very enjoyable stay. The location is great!"

Reviewed on May 19, 2026

Opens in a new windowHotel Felix River North/Magnificent Mile
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The Chicago Hotel Collection - Magnificent Mile

The Chicago Hotel Collection - Magnificent Mile

4 out of 5
166 E Superior Street Chicago IL
Book a stay at this boutique hotel in Chicago. Enjoy free WiFi, 2 restaurants, and 2 bars/lounges. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Michigan Avenue and Chicago Riverwalk are located nearby.
7.8/10 Good! (1,442 reviews)
"The laundry was not working"

Reviewed on May 20, 2026

Opens in a new windowThe Chicago Hotel Collection - Magnificent Mile
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 $56 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 20 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 August. 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 $56 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 $56 and $2,123 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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