Cheap Flights to Illinois from $25 (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Jet to one of Illinois's top cities

A city skyline with modern skyscrapers and a river with boats and people in the foreground.

Chicago

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.

Wed, Nov 4 - Mon, Nov 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$43 Roundtrip, found 1 day ago
$43
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Nov 4 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Nov 9, priced at $43 found 1 day ago
Sun, Nov 15 - Mon, Nov 16
DEN
Denver Intl.
ORD
O'Hare Intl.
$94 Roundtrip, found 6 days ago
$94
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Nov 15 from Denver Intl. to O'Hare Intl., returning Mon, Nov 16, priced at $94 found 6 days ago
Sat, Oct 31 - Thu, Nov 5
DFW
Dallas-Fort Worth Intl.
MDW
Midway Intl.
$101 Roundtrip, found 6 days ago
$101
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, Oct 31 from Dallas-Fort Worth Intl. to Midway Intl., returning Thu, Nov 5, priced at $101 found 6 days ago
Wed, Jan 27 - Sat, Jan 30
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$108 Roundtrip, found 21 hours ago
$108
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Wed, Jan 27 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Jan 30, priced at $108 found 21 hours ago
Wed, Oct 7 - Sat, Oct 31
ATL
Hartsfield-Jackson Atlanta Intl.
ORD
O'Hare Intl.
$110 Roundtrip, found 2 days ago
$110
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Oct 7 from Hartsfield-Jackson Atlanta Intl. to O'Hare Intl., returning Sat, Oct 31, priced at $110 found 2 days ago
Sat, Oct 10 - Tue, Oct 13
ATL
Hartsfield-Jackson Atlanta Intl.
MDW
Midway Intl.
$112 Roundtrip, found 5 days ago
$112
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Oct 10 from Hartsfield-Jackson Atlanta Intl. to Midway Intl., returning Tue, Oct 13, priced at $112 found 5 days ago
Sat, Nov 7 - Wed, Nov 18
AZA
Phoenix - Mesa Gateway
MLI
Quad City Intl.
$130 Roundtrip, found 4 days ago
$130
Roundtrip
found 4 days ago
Select Allegiant Air flight, departing Sat, Nov 7 from Phoenix - Mesa Gateway to Quad City Intl., returning Wed, Nov 18, priced at $130 found 4 days ago
Thu, Nov 19 - Thu, Nov 26
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$140 Roundtrip, found 4 days ago
$140
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Nov 19 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Thu, Nov 26, priced at $140 found 4 days ago
Tue, Dec 1 - Tue, Dec 8
DFW
Dallas-Fort Worth Intl.
ORD
O'Hare Intl.
$146 Roundtrip, found 2 days ago
$146
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Dec 1 from Dallas-Fort Worth Intl. to O'Hare Intl., returning Tue, Dec 8, priced at $146 found 2 days ago
Sat, Oct 17 - Wed, Oct 21
DAL
Love Field
STL
Lambert-St. Louis Intl.
$212 Roundtrip, found 3 days ago
$212
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Oct 17 from Love Field to Lambert-St. Louis Intl., returning Wed, Oct 21, priced at $212 found 3 days ago
Wed, Oct 14 - Wed, Oct 28
DAL
Love Field
MDW
Midway Intl.
$237 Roundtrip, found 2 days ago
$237
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Wed, Oct 14 from Love Field to Midway Intl., returning Wed, Oct 28, priced at $237 found 2 days ago
OriginDestinationTravel DatesFlights From*
ATLChicagoNovember 4 to November 9$114
ATLEvansvilleOctober 14 to October 18$283
LGAMolineDecember 12 to December 14$300
ATLBloomingtonNovember 18 to November 22$324
ATLMolineOctober 30 to November 1$324
ATLPeoriaNovember 24 to November 27$339
LAXPeoriaOctober 14 to October 20$379
EWRSavoyNovember 6 to November 7$381
LAXMolineOctober 17 to October 20$384
EWRPeoriaNovember 25 to November 28$468
ATLRockfordOctober 4 to October 4$474
EWRRockfordOctober 4 to October 4$495
DFWBloomingtonDecember 10 to December 13$546
ATLSavoyOctober 8 to October 11$639
LAXBloomingtonOctober 5 to October 8$949
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
ATLChicagoSeptember 27 to October 27$246
ATLChicagoSeptember 26 to September 26$361
LAXChicagoSeptember 26 to September 29$394
LAXChicagoSeptember 26 to September 28$404
LAXSt. LouisSeptember 26 to October 5$420
ATLSt. LouisSeptember 25 to September 27$420
ATLRockfordSeptember 26 to September 29$424
ATLEvansvilleSeptember 25 to September 27$424
LAXSavoySeptember 26 to September 30$516
LAXBloomingtonSeptember 27 to October 4$545
LAXMolineSeptember 25 to September 27$581
LAXPeoriaSeptember 27 to October 4$598
ATLBloomingtonSeptember 27 to October 1$828
ATLPeoriaSeptember 27 to October 1$877
PVGChicagoSeptember 27 to November 1$1,272
*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

Nov 6 - Nov 9

3 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Price was $873, price is now $402 per person
$402
per person
found 1 day ago
Level Chicago Fulton Market
4.0-star property

Level Chicago Fulton Market

Oct 16 - Oct 20

4 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,528, price is now $847 per person
$847
per person
found 1 day ago
Swissotel - Chicago
4.5-star property

Swissotel - Chicago

Oct 16 - Oct 19

3 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,147, price is now $661 per person
$661
per person
found 1 day ago
Don't see what you're looking for?
See all available trips from Atlanta to Illinois
View all trips

Travelers ❤️ These Illinois 🏨

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! (5,450 reviews)
"great location, decent amount of space at a reasonable price (for nowadays)"

Reviewed on Sep 20, 2026

Opens in a new windowRiver Hotel
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.
Opens in a new windowCongress Plaza Hotel
The Chicago Hotel Collection Ambassador Gold Coast

The Chicago Hotel Collection Ambassador Gold Coast

4 out of 5
1301 N State Pkwy Chicago IL
Book a stay at this business-friendly hotel in Chicago. Enjoy free WiFi, a 24-hour fitness center, 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.
Opens in a new windowThe Chicago Hotel Collection Ambassador Gold Coast
Save an average of 15% on thousands of hotels when you're signed in
Sign in
Sign up, it's free
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! (2,199 reviews)
"The angle of water is not correct, and the shower head is not adjustable. The water will spread all over your face before you start. The wallpaper in the bathroom is peeling off."

Reviewed on Sep 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 $43 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 November. 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 $43 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 $43 and $1,272 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.

Explore More Ways to Travel with Travelocity