Search Cheapest Flights to Illinois

More Flash, Less Cash - Take advantage of our Price Pledge** (even on luxey stays)

We keep it easy with the option to pay now or later on select accommodation

Book up 'til the last second - millions of rooms to crash tonight^

Cheap flights to Illinois

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,159 Return, found 3 days ago
AU$2,159
Return
found 3 days ago
Select United flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,159 found 3 days ago
Cathay Pacific
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,314 Return, found 3 days ago
AU$2,314
Return
found 3 days ago
Select Cathay Pacific flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,314 found 3 days ago
United
Mon., 30 Jun. - Tue., 30 Sep.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,339 Return, found 4 hours ago
AU$2,339
Return
found 4 hours ago
Select United flight, departing Mon., 30 Jun. from Tullamarine to O'Hare Intl., returning Tue., 30 Sep., priced at AU$2,339 found 4 hours ago
United
Tue., 3 Jun. - Mon., 30 Jun.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,375 Return, found 1 day ago
AU$2,375
Return
found 1 day ago
Select United flight, departing Tue., 3 Jun. from Tullamarine to O'Hare Intl., returning Mon., 30 Jun., priced at AU$2,375 found 1 day ago
Cathay Pacific
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,443 Return, found 3 days ago
AU$2,443
Return
found 3 days ago
Select Cathay Pacific flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,443 found 3 days ago
Virgin Australia
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,495 Return, found 3 days ago
AU$2,495
Return
found 3 days ago
Select Virgin Australia flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,495 found 3 days ago
United
Tue., 22 Apr. - Tue., 29 Apr.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,518 Return, found 3 days ago
AU$2,518
Return
found 3 days ago
Select United flight, departing Tue., 22 Apr. from Tullamarine to O'Hare Intl., returning Tue., 29 Apr., priced at AU$2,518 found 3 days ago
Jetstar
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,528 Return, found 3 days ago
AU$2,528
Return
found 3 days ago
Select Jetstar flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,528 found 3 days ago
Virgin Australia
Sun., 28 Sep. - Mon., 13 Oct.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,539 Return, found 3 days ago
AU$2,539
Return
found 3 days ago
Select Virgin Australia flight, departing Sun., 28 Sep. from Tullamarine to O'Hare Intl., returning Mon., 13 Oct., priced at AU$2,539 found 3 days ago
American Airlines
Tue., 3 Jun. - Mon., 30 Jun.
MEL
Tullamarine
ORD
O'Hare Intl.
AU$2,546 Return, found 1 day ago
AU$2,546
Return
found 1 day ago
Select American Airlines flight, departing Tue., 3 Jun. from Tullamarine to O'Hare Intl., returning Mon., 30 Jun., priced at AU$2,546 found 1 day ago

Cheapest Flights To Illinois

Your boss is making it hard to whistle while you work. You could call in sick, but what fun is that? We say you should fly to Illinois for a much-needed holiday. At lastminute.com.au, our deals are almost as hard to resist as that second in-flight beverage.

Are there cheap flights to Illinois available?

Cheer up, frugal friend! We've found flights to Illinois starting from AU$2,159. When you grab economy (or premium economy flights if you're feeling fancy) to Illinois at a discount on lastminute.com.au, you still have plenty left over for a midnight snack after you get home from the nightclub (or the museum, as far as your mum is concerned).

What airlines fly to Illinois?

Some of the most popular airlines that fly to airports in Illinois are United, Xiamen Airlines, American Airlines, Air Canada, Cathay Pacific, Virgin Australia, Jetstar. What are you waiting for? You grab the ticket, we’ll start packing your carry-on.

Check out flights to these amazing Illinois cities

Popular cities in Illinois

Chicago which includes a high-rise building and a city as well as a family
FlightsFlights
FlightsFlights

Chicago

Chicago

Deals On This Weekend's Flights

Travelers ❤️ These 🏨

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 4-star hotel in Chicago. Enjoy free breakfast, room service, and a fitness center. Our guests praise the breakfast and the pool in our reviews. ...
8.2/10 Very Good! (3,892 reviews)
"The gym was too small. Not enough equipment especially sit down bikes."

Reviewed on 17 Apr. 2025

Embassy Suites by Hilton Chicago Downtown River North
Swissotel - Chicago

Swissotel - Chicago

4.5 out of 5
323 E Wacker Dr, Chicago, IL
Book a stay at this eco-certified hotel in Chicago. Enjoy 2 bars/lounges, breakfast (surcharge), and 24-hour room service. Our guests praise the restaurant and ...
8.8/10 Excellent! (2,063 reviews)
"Room cleaning crew paid attention to every detail, even put a small towel under my toiletries."

Reviewed on 18 Apr. 2025

Swissotel - Chicago
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 ...
8.8/10 Excellent! (2,139 reviews)
"The only thing was the pool was closed. But other then that we had a good stay"

Reviewed on 18 Apr. 2025

Hilton 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.