Cheap Flights to Illinois from $33 (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.

Tue, Jul 21 - Tue, Jul 28
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 22 hours ago
$56
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Tue, Jul 21 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 28, priced at $56 found 22 hours ago
Tue, Aug 18 - Wed, Aug 26
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$66 Roundtrip, found 16 hours ago
$66
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Tue, Aug 18 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Wed, Aug 26, priced at $66 found 16 hours ago
Wed, Sep 30 - Wed, Sep 30
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$71 Roundtrip, found 3 hours ago
$71
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Sep 30 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Wed, Sep 30, priced at $71 found 3 hours ago
Tue, Jul 14 - Tue, Jul 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$117 Roundtrip, found 8 hours ago
$117
Roundtrip
found 8 hours ago
Select Southwest Airlines flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 21, priced at $117 found 8 hours ago
Tue, Jul 14 - Tue, Jul 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$117 Roundtrip, found 8 hours ago
$117
Roundtrip
found 8 hours ago
Select Delta flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 21, priced at $117 found 8 hours ago
Thu, Oct 15 - Thu, Oct 22
PHX
Sky Harbor Intl.
ORD
O'Hare Intl.
$180 Roundtrip, just found
$180
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 15 from Sky Harbor Intl. to O'Hare Intl., returning Thu, Oct 22, priced at $180 just found
Wed, May 27 - Fri, May 29
ATL
Hartsfield-Jackson Atlanta Intl.
RFD
Greater Rockford
$196 Roundtrip, found 2 days ago
$196
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, May 27 from Hartsfield-Jackson Atlanta Intl. to Greater Rockford, returning Fri, May 29, priced at $196 found 2 days ago
Wed, May 27 - Fri, May 29
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$197 Roundtrip, found 6 hours ago
$197
Roundtrip
found 6 hours ago
Select United flight, departing Wed, May 27 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Fri, May 29, priced at $197 found 6 hours ago
Tue, Jun 2 - Sat, Jun 6
PHX
Sky Harbor Intl.
STL
Lambert-St. Louis Intl.
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Jun 2 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Sat, Jun 6, priced at $224 found 3 days ago
Wed, Sep 23 - Mon, Sep 28
SEA
Seattle - Tacoma Intl.
ORD
O'Hare Intl.
$234 Roundtrip, found 2 days ago
$234
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Sep 23 from Seattle - Tacoma Intl. to O'Hare Intl., returning Mon, Sep 28, priced at $234 found 2 days ago
Tue, Jul 28 - Tue, Aug 4
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$277 Roundtrip, just found
$277
Roundtrip
just found
Select JetBlue Airways flight, departing Tue, Jul 28 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Tue, Aug 4, priced at $277 just found
OriginDestinationTravel DatesFlights From*
LAXChicagoAugust 19 to August 22$195
LAXChicagoAugust 5 to September 9$209
LAXSt. LouisAugust 25 to September 1$210
ATLEvansvilleJune 11 to June 18$339
LAXMolineJuly 18 to July 25$354
LAXBloomingtonJuly 14 to July 21$359
ATLBloomingtonAugust 5 to August 8$399
LAXEvansvilleMay 28 to June 13$429
LAXSpringfieldAugust 20 to August 22$431
ATLPeoriaJune 8 to June 12$443
LAXSavoyJune 19 to June 23$558
PVGChicagoJune 21 to September 30$1,240
PVGSt. LouisJune 21 to June 29$1,542
PVGChicagoJune 18 to July 31$1,596
PEKEvansvilleMay 28 to June 1$2,917
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
DFWChicagoMay 16 to May 27$226
ATLChicagoMay 17 to May 28$299
ATLSt. LouisMay 16 to May 26$316
ATLChicagoMay 17 to May 28$324
EWRSt. LouisMay 17 to May 20$337
LGARockfordMay 16 to May 20$354
DFWSt. LouisMay 17 to May 20$370
LAXChicagoMay 17 to May 27$383
LGASavoyMay 16 to May 19$425
LAXSt. LouisMay 16 to May 23$439
DFWSavoyMay 16 to May 19$475
LAXChicagoMay 17 to May 21$485
LAXRockfordMay 17 to May 24$491
ATLRockfordMay 16 to May 18$665
DFWMolineMay 17 to May 24$694
*Prices include taxes and fees

Best Illinois Flight and Hotel 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 24 - Jul 27

3 night stay

Boston (BOS) to Chicago (ORD)

JetBlue Airways • Roundtrip • Coach
Save 100% on your flight
Price was $1,121, price is now $635 per person
$635
per person
found 1 day ago
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

Jul 26 - Aug 1

6 night stay

Orlando (MCO) to St. Louis (STL)

Southwest Airlines • Coach

St. Louis (STL) to Orlando (MCO)

Frontier Airlines • Coach
Save 100% on your flight
Price was $1,173, price is now $683 per person
$683
per person
found 1 day ago
The Wade
4.5-star property

The Wade

Jun 18 - Jun 23

5 night stay

Boston (BOS) to Chicago (ORD)

American Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,601, price is now $954 per person
$954
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Boston to Illinois
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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! (10,117 reviews)
The bathtub had rust spots including tape placed on it. The water was barely warm for washing.

Reviewed on May 14, 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! (4,144 reviews)
This was my first time staying in a Riu Hotel and I was incredibly impressed. It was super clean, the staff was really helpful, and the breakfast was awesome. Five stars!!

Reviewed on May 14, 2026

Opens in a new windowHotel Riu Plaza Chicago
River Hotel

River Hotel

4 out of 5
75 East Wacker Drive Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy free WiFi, room service, and a fitness center. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Chicago Riverwalk and Michigan Avenue are located nearby.
8.8/10 Excellent! (5,172 reviews)
Hotel is a beautiful, smaller boutique property.

Reviewed on May 14, 2026

Opens in a new windowRiver Hotel
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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! (2,689 reviews)
All was good

Reviewed on May 12, 2026

Opens in a new windowHotel Felix River North/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 July. 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 $2,917 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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