Cheap flights to Illinois

View €277 flight on Thu, 13 Aug 2026Opens in a new window

Popular airlines to Illinois

  • Frontier Airlines

  • Delta

  • American Airlines

  • United

  • Alaska Airlines

  • JetBlue Airways

  • Southwest Airlines

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at €277 for one-way flights and €437 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, 2 Dec - Sun, 13 Dec
DUB
Dublin
ORD
Chicago
€437 Return, found 1 day ago
€437
Return
found 1 day ago
Select Icelandair flight, departing Wed, 2 Dec from Dublin to Chicago, returning Sun, 13 Dec, priced at €437 found 1 day ago
British Airways
Thu, 10 Dec - Mon, 11 Jan
DUB
Dublin
ORD
Chicago
€445 Return, just found
€445
Return
just found
Select British Airways flight, departing Thu, 10 Dec from Dublin to Chicago, returning Mon, 11 Jan, priced at €445 just found
Lufthansa
Sat, 5 Dec - Sat, 12 Dec
DUB
Dublin
ORD
Chicago
€445 Return, found 16 hours ago
€445
Return
found 16 hours ago
Select Lufthansa flight, departing Sat, 5 Dec from Dublin to Chicago, returning Sat, 12 Dec, priced at €445 found 16 hours ago
Swiss International Air Lines
Fri, 6 Nov - Tue, 17 Nov
DUB
Dublin
ORD
Chicago
€452 Return, found 15 hours ago
€452
Return
found 15 hours ago
Select Swiss International Air Lines flight, departing Fri, 6 Nov from Dublin to Chicago, returning Tue, 17 Nov, priced at €452 found 15 hours ago
Aer Lingus
Thu, 10 Dec - Mon, 11 Jan
DUB
Dublin
ORD
Chicago
€457 Return, just found
€457
Return
just found
Select Aer Lingus flight, departing Thu, 10 Dec from Dublin to Chicago, returning Mon, 11 Jan, priced at €457 just found
Iberia
Fri, 6 Nov - Tue, 17 Nov
DUB
Dublin
ORD
Chicago
€461 Return, found 15 hours ago
€461
Return
found 15 hours ago
Select Iberia flight, departing Fri, 6 Nov from Dublin to Chicago, returning Tue, 17 Nov, priced at €461 found 15 hours ago
American Airlines
Fri, 6 Nov - Tue, 17 Nov
DUB
Dublin
ORD
Chicago
€461 Return, found 15 hours ago
€461
Return
found 15 hours ago
Select American Airlines flight, departing Fri, 6 Nov from Dublin to Chicago, returning Tue, 17 Nov, priced at €461 found 15 hours ago
Brussels Airlines
Fri, 6 Nov - Tue, 17 Nov
DUB
Dublin
ORD
Chicago
€462 Return, found 15 hours ago
€462
Return
found 15 hours ago
Select Brussels Airlines flight, departing Fri, 6 Nov from Dublin to Chicago, returning Tue, 17 Nov, priced at €462 found 15 hours ago
Air Canada
Fri, 6 Nov - Tue, 17 Nov
DUB
Dublin
ORD
Chicago
€465 Return, found 15 hours ago
€465
Return
found 15 hours ago
Select Air Canada flight, departing Fri, 6 Nov from Dublin to Chicago, returning Tue, 17 Nov, priced at €465 found 15 hours ago
Delta
Sat, 21 Nov - Wed, 25 Nov
DUB
Dublin
ORD
Chicago
€473 Return, found 19 hours ago
€473
Return
found 19 hours ago
Select Delta flight, departing Sat, 21 Nov from Dublin to Chicago, returning Wed, 25 Nov, priced at €473 found 19 hours ago

Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, 2 Dec - Sun, 13 Dec
DUB
Dublin
ORD
Chicago
€437 Return, found 1 day ago
€437
Return
found 1 day ago
Select Icelandair flight, departing Wed, 2 Dec from Dublin to Chicago, returning Sun, 13 Dec, priced at €437 found 1 day ago

Frequently asked questions

How do I find cheap flights to Illinois that have flexible change policies?
Search for cheap flights to Illinois, then tick the "No change fee" box under the "Flexible change policies" heading. From then on it's smooth sailing. We understand that travel plans change and flexibility is essential, so book with confidence with Expedia.
Which airlines fly to Illinois?
Whether you're travelling somewhere new or rendezvousing at a favourite haunt, these airlines are waiting to take you into or near Illinois:

  • United Airlines - 13,063 flights to or near Illinois each month, including 12,950 flights to O'Hare Intl. Airport (ORD) and 108 flights to Quad City Intl. Airport (MLI) per month.
  • American Airlines - 8,977 flights to or near Illinois each month, including 8,855 flights to O'Hare Intl. Airport (ORD) and 121 flights to Quad City Intl. Airport (MLI) per month.
  • Southwest Airlines - 5,997 flights to or near Illinois each month, including 5,334 flights to Midway Intl. Airport (MDW) and 663 flights to O'Hare Intl. Airport (ORD) per month.

How can I find cheap tickets to Illinois?
One of the easiest ways to find cheap tickets to Illinois is to be flexible with your travel dates. Search for your flights, then click "flexible dates" at the top of your results. It'll reveal the cheapest prices for nearby days. The lowest price for a flight to Illinois in the last seven days was €437. Booking well in advance will generally help you score an even bigger bargain.
How much is a flight to Illinois?
There were plenty of bargain fares up for grabs in the last seven days, with the cost of a return airfare to Illinois ranging between €437 and €535. Many lucky travellers nabbed one-way tickets from Dublin (DUB) for as little as €277.
What are the most popular airports to fly into in Illinois?
Touch down at one of these top Illinois airports and you'll be perfectly placed to discover all that this wonderful region has to offer:

  • O'Hare Intl. Airport (ORD) - 25,318 flights per month.
  • Midway Intl. Airport (MDW) - 5,962 flights per month.
  • Quad City Intl. Airport (MLI) - 325 flights per month.

How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from €437 to €535.
What is the best time to go to Illinois?
A terrific time to check out Chicago is after June 20 when the summer season starts. In Illinois's main city, average temperatures range from 18ºC to 24ºC at this time — ideal weather for sightseeing! May, June and August are the most popular months to head to this hot spot.
What months are the cheapest to book a flight to Illinois?
The top month to purchase affordable flights to Illinois is February. Remember that in the U.S, an expensive time to reserve a ticket is during the busy month of December.

Book with confidence

About Illinois

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About Illinois

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