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Flights to Illinois

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Cheap round-trip flights to Illinois

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Tue, May 7 - Wed, May 8
BWI
Baltimore Washington Intl. Thurgood Marshall
to
ORD
O'Hare Intl.
$97

roundtrip

found 1 hour ago

Open BWI to ORD flights search result page
Wed, May 22 - Sat, May 25
MSP
Minneapolis - St. Paul Intl.
to
MDW
Midway Intl.
$107

roundtrip

found 1 hour ago

Open MSP to MDW flights search result page
Mon, Jul 29 - Wed, Jul 31
MSP
Minneapolis - St. Paul Intl.
to
ORD
O'Hare Intl.
$107

roundtrip

found 1 hour ago

Open MSP to ORD flights search result page
Sat, May 4 - Tue, May 7
LAX
Los Angeles Intl.
to
ORD
O'Hare Intl.
$126

roundtrip

found 11 hours ago

Open LAX to ORD flights search result page
Tue, Aug 27 - Tue, Aug 27
BWI
Baltimore Washington Intl. Thurgood Marshall
to
MDW
Midway Intl.
$138

roundtrip

found 5 days ago

Open BWI to MDW flights search result page
Sun, Jun 16 - Fri, Jun 21
MSP
Minneapolis - St. Paul Intl.
to
STL
Lambert-St. Louis Intl.
$148

roundtrip

found 17 hours ago

Open MSP to STL flights search result page
Sat, Apr 13 - Sat, Apr 20
MSP
Minneapolis - St. Paul Intl.
to
MLI
Quad City Intl.
$172

roundtrip

found 1 day ago

Open MSP to MLI flights search result page
Sat, Apr 20 - Wed, Apr 24
BWI
Baltimore Washington Intl. Thurgood Marshall
to
STL
Lambert-St. Louis Intl.
$181

roundtrip

found 15 hours ago

Open BWI to STL flights search result page
Wed, May 15 - Sat, May 18
LAX
Los Angeles Intl.
to
STL
Lambert-St. Louis Intl.
$188

roundtrip

found 13 hours ago

Open LAX to STL flights search result page
Tue, Apr 30 - Sat, May 4
MSP
Minneapolis - St. Paul Intl.
to
PIA
Greater Peoria Regional
$197

roundtrip

found 1 day ago

Open MSP to PIA flights search result page
Thu, Apr 4 - Sat, Apr 6
BWI
Baltimore Washington Intl. Thurgood Marshall
to
MLI
Quad City Intl.
$203

roundtrip

found 5 days ago

Open BWI to MLI flights search result page
Wed, Apr 3 - Wed, Apr 3
BWI
Baltimore Washington Intl. Thurgood Marshall
to
PIA
Greater Peoria Regional
$205

roundtrip

found 5 days ago

Open BWI to PIA flights search result page

Illinois

When you plan to buy tickets for flights to Illinois, you don’t have to look any further than Orbitz! We offer bargain rates and low fares on thousands of flights.

Reliable Customer Service

Along with our low prices, Orbitz is well known for exceptional customer care. We make it simple to find the best Illinois flights for you. If you need to cancel your booking or change your flight plans, simply contact our Customer Service department to make any adjustments.

Bargain Tickets for Illinois Flights

Orbitz offers deeply discounted flights to Illinois, and we provide the resources to research your travel destination and plan your complete itinerary.

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If you like the ease of making your travel plans on the move, you’ll love the free Orbitz apps for iPhones, iPads, and Android devices. You can use these apps to review your travel reservations or make a change to your itinerary. Orbitz also offers additional travel assistance such as free mobile alerts that keep you up-to-date about sudden changes to your upcoming flights. You can also browse Orbitz easily on your smartphone by using the mobile version of the website to find budget Illinois flights.

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More to explore for Illinois

Explore Illinois with Orbitz's Travel Guides to find the best flights, cars, vacation packages and more!

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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.