Cheap Flights to Illinois from $94 (2026/2027)

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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.

Tue, Sep 8 - Wed, Sep 16
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$187 Roundtrip, found 5 hours ago
$187
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Sep 8 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Wed, Sep 16, priced at $187 found 5 hours ago
Tue, Oct 6 - Wed, Oct 14
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Tue, Oct 6 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Wed, Oct 14, priced at $187 found 1 day ago
Tue, Oct 6 - Wed, Oct 14
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$187 Roundtrip, found 1 day ago
$187
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Oct 6 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Wed, Oct 14, priced at $187 found 1 day ago
Tue, Sep 8 - Wed, Sep 16
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$197 Roundtrip, found 5 hours ago
$197
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Sep 8 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Wed, Sep 16, priced at $197 found 5 hours ago
Tue, Sep 22 - Tue, Sep 22
SEA
Seattle - Tacoma Intl.
ORD
O'Hare Intl.
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Sep 22 from Seattle - Tacoma Intl. to O'Hare Intl., returning Tue, Sep 22, priced at $258 found 3 days ago
Tue, Aug 25 - Tue, Sep 1
SEA
Seattle - Tacoma Intl.
MDW
Midway Intl.
$269 Roundtrip, found 12 hours ago
$269
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Tue, Aug 25 from Seattle - Tacoma Intl. to Midway Intl., returning Tue, Sep 1, priced at $269 found 12 hours ago
Sat, Sep 19 - Sat, Sep 26
SEA
Seattle - Tacoma Intl.
PIA
Greater Peoria Regional
$271 Roundtrip, found 10 hours ago
$271
Roundtrip
found 10 hours ago
Select United flight, departing Sat, Sep 19 from Seattle - Tacoma Intl. to Greater Peoria Regional, returning Sat, Sep 26, priced at $271 found 10 hours ago
Thu, Sep 24 - Sat, Sep 26
SEA
Seattle - Tacoma Intl.
RFD
Greater Rockford
$276 Roundtrip, found 12 hours ago
$276
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Thu, Sep 24 from Seattle - Tacoma Intl. to Greater Rockford, returning Sat, Sep 26, priced at $276 found 12 hours ago
OriginDestinationTravel DatesFlights From*
ATLSt. LouisSeptember 29 to October 8$56
ATLChicagoSeptember 27 to October 1$149
LAXChicagoSeptember 24 to September 27$237
ATLPeoriaAugust 28 to August 30$316
LAXPeoriaAugust 13 to August 18$357
EWREvansvilleAugust 5 to August 8$361
ATLEvansvilleOctober 27 to October 28$397
ATLSpringfieldSeptember 1 to September 5$420
LAXSavoySeptember 23 to September 27$464
LAXSpringfieldAugust 13 to August 20$482
LGABloomingtonOctober 9 to October 11$529
LAXEvansvilleAugust 6 to August 9$591
PVGChicagoOctober 9 to November 8$1,097
PVGSt. LouisAugust 31 to September 27$1,112
PVGEvansvilleOctober 12 to October 16$1,569
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
ATLChicagoJuly 24 to July 25$211
DFWChicagoJuly 25 to August 6$271
EWRChicagoJuly 25 to August 1$303
ATLChicagoJuly 26 to July 30$306
LAXChicagoJuly 25 to July 29$340
EWRChicagoJuly 25 to July 31$348
LAXSt. LouisJuly 26 to August 1$367
ATLRockfordJuly 26 to August 2$439
DFWRockfordJuly 25 to August 1$454
LAXChicagoJuly 25 to July 28$466
DFWEvansvilleJuly 24 to July 27$630
ATLSpringfieldJuly 24 to July 30$652
LAXRockfordJuly 26 to July 31$813
HKGChicagoJuly 26 to August 31$1,264
PVGChicagoJuly 24 to July 28$1,423
*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 23 - Sep 26

3 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Price was $460, price is now $228 per person
$228
per person
found 18 hours ago
Remodeled and Inviting Free EV
2.0-star property

Remodeled and Inviting Free EV

Sep 6 - Sep 12

6 night stay

Atlanta (ATL) to St. Louis (STL)

Frontier Airlines • Roundtrip • Coach
Price was $1,028, price is now $528 per person
$528
per person
found 1 day ago
Hotel Felix River North/Magnificent Mile
4.0-star property

Hotel Felix River North/Magnificent Mile

Sep 23 - Sep 28

5 night stay

Atlanta (ATL) to Chicago (ORD)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,092, price is now $648 per person
$648
per person
found 1 day ago
Don't see what you're looking for?
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Travelers ❤️ These Illinois 🏨

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.
Opens in a new windowHyatt Regency O'Hare Chicago
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
The Wade

The Wade

4.5 out of 5
644 N Lake Shore Dr Chicago IL
Book a stay at this luxury hotel in Chicago. Enjoy free WiFi, breakfast (surcharge), and room service. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Michigan Avenue and Navy Pier are located nearby.
8.6/10 Excellent! (1,930 reviews)
"Why book here? LOCATION and competitive price. Why not? If you care about hospitality. This isn't going to be the place. Some of the front desk staff were impatient and border line dismissive. No decaf, despite a sign saying it was available. Just plan to go to Starbucks about a block away for coffee ..."

Reviewed on Jul 18, 2026

Opens in a new windowThe Wade
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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! (10,222 reviews)
"Wonderful location - we were right across from Buckingham Fountain. From the 11th floor, we had a great view of the lake. Old style elegance. The a/c - heating system is of a different era. I would not book a lake side room during the height of the summer - I don't think the system could keep ..."

Reviewed on Jul 19, 2026

Opens in a new windowCongress Plaza Hotel
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 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 $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 $1,569 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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