Cheap Flights to Illinois from $29 (2026/2027)

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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.

Sat, Apr 25 - Sat, May 2
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$57 Roundtrip, found 5 days ago
$57
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Apr 25 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 2, priced at $57 found 5 days ago
Mon, Apr 13 - Tue, Apr 21
LGA
LaGuardia
ORD
O'Hare Intl.
$72 Roundtrip, found 1 day ago
$72
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Mon, Apr 13 from LaGuardia to O'Hare Intl., returning Tue, Apr 21, priced at $72 found 1 day ago
Fri, May 8 - Fri, May 8
DEN
Denver Intl.
ORD
O'Hare Intl.
$82 Roundtrip, found 6 days ago
$82
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, May 8 from Denver Intl. to O'Hare Intl., returning Fri, May 8, priced at $82 found 6 days ago
Wed, May 13 - Sat, May 16
LAX
Los Angeles Intl.
ORD
O'Hare Intl.
$100 Roundtrip, found 13 hours ago
$100
Roundtrip
found 13 hours ago
Select Spirit Airlines flight, departing Wed, May 13 from Los Angeles Intl. to O'Hare Intl., returning Sat, May 16, priced at $100 found 13 hours ago
Fri, May 8 - Sun, May 10
LGA
LaGuardia
MDW
Midway Intl.
$137 Roundtrip, found 1 day ago
$137
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Fri, May 8 from LaGuardia to Midway Intl., returning Sun, May 10, priced at $137 found 1 day ago
Fri, Apr 17 - Mon, Apr 20
DEN
Denver Intl.
MDW
Midway Intl.
$160 Roundtrip, found 15 hours ago
$160
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Fri, Apr 17 from Denver Intl. to Midway Intl., returning Mon, Apr 20, priced at $160 found 15 hours ago
Mon, May 4 - Wed, May 6
DEN
Denver Intl.
RFD
Greater Rockford
$172 Roundtrip, found 6 days ago
$172
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, May 4 from Denver Intl. to Greater Rockford, returning Wed, May 6, priced at $172 found 6 days ago
Wed, Jun 3 - Thu, Jun 4
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$190 Roundtrip, found 15 hours ago
$190
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Jun 3 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Thu, Jun 4, priced at $190 found 15 hours ago
Fri, Apr 24 - Sun, Apr 26
LAX
Los Angeles Intl.
MDW
Midway Intl.
$190 Roundtrip, found 11 hours ago
$190
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Fri, Apr 24 from Los Angeles Intl. to Midway Intl., returning Sun, Apr 26, priced at $190 found 11 hours ago
Tue, Apr 21 - Sat, Apr 25
DEN
Denver Intl.
MLI
Quad City Intl.
$216 Roundtrip, found 5 days ago
$216
Roundtrip
found 5 days ago
Select United flight, departing Tue, Apr 21 from Denver Intl. to Quad City Intl., returning Sat, Apr 25, priced at $216 found 5 days ago
OriginDestinationTravel DatesFlights From*
ATLChicagoApril 28 to May 1$56
LAXChicagoApril 14 to April 28$106
LAXChicagoApril 24 to April 26$190
LGAMolineMay 20 to May 27$191
LAXMolineApril 22 to April 28$316
EWREvansvilleApril 29 to May 5$317
LAXPeoriaApril 1 to April 5$319
ATLPeoriaMay 21 to May 28$344
ATLMolineMay 21 to May 28$399
ATLBloomingtonJune 6 to June 16$399
LAXEvansvilleMay 21 to May 26$439
ATLEvansvilleMarch 23 to March 25$588
PVGChicagoApril 8 to April 15$997
PVGSt. LouisApril 20 to April 26$1,176
PVGSavoyMay 2 to May 21$1,653
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
EWRChicagoMarch 8 to April 15$103
EWRChicagoMarch 8 to March 10$188
ATLChicagoMarch 8 to March 23$243
ATLChicagoMarch 8 to March 10$254
LGASt. LouisMarch 7 to March 11$286
EWRRockfordMarch 7 to March 14$333
ATLPeoriaMarch 7 to March 9$348
EWRMolineMarch 7 to March 10$351
EWRSpringfieldMarch 7 to March 10$483
EWRSavoyMarch 7 to March 11$495
DFWMolineMarch 7 to March 12$614
ATLBloomingtonMarch 7 to March 11$657
LGAPeoriaMarch 8 to March 11$732
LAXRockfordMarch 7 to March 11$748
CANChicagoMarch 8 to March 16$1,407
*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

May 8 - May 10

2 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $512, price is now $294 per person
$294
per person
found 1 day ago
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

Apr 21 - Apr 24

3 night stay

Atlanta (ATL) to St. Louis (STL)

Delta • Coach

St. Louis (STL) to Atlanta (ATL)

Frontier Airlines • Coach
Save 100% on your flight
Price was $946, price is now $476 per person
$476
per person
found 1 day ago
La Banque Hotel
4.0-star property

La Banque Hotel

May 7 - May 11

4 night stay

Dallas (DFW) to Chicago (ORD)

Frontier Airlines • Coach

Chicago (ORD) to Dallas (DFW)

Spirit Airlines • Coach
Price was $759, price is now $419 per person
$419
per person
found 24 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! (9,916 reviews)
Great location! Friendly staff

Reviewed on Mar 5, 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! (3,459 reviews)
This hotel was super nice and it was clean and we did have to use another hotels valet, but it was no problem because it was right next-door, but the staff was super nice and accommodating. I will definitely stay here again.

Reviewed on Mar 5, 2026

Opens in a new windowHotel Riu Plaza Chicago
Embassy Suites by Hilton Chicago Downtown River North

Embassy Suites by Hilton Chicago Downtown River North

4 out of 5
600 N State St Chicago IL
Stay at this hotel in Chicago. Enjoy free breakfast, room service, and a fitness center. Our guests praise the breakfast and the pool in our reviews. Popular attractions Michigan Avenue and Chicago Riverwalk are located nearby.
8.6/10 Excellent! (5,716 reviews)
Old property bad food long lines

Reviewed on Mar 5, 2026

Opens in a new windowEmbassy Suites by Hilton Chicago Downtown River North
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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! (3,872 reviews)
Clean room spacious friendly staff

Reviewed on Mar 5, 2026

Opens in a new windowHilton Chicago/Magnificent Mile Suites
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 18 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 April. 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 $1,653 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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