Cheap flights to Illinois

View €263 flight on Wed, 11 Mar 2026Opens in a new window

Popular airlines to Illinois

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Spirit Airlines

    Spirit Airlines

  • JetBlue Airways

    JetBlue Airways

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at €263 for one-way flights and €381 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sun, 1 Mar - Sun, 8 Mar
DUB
Dublin
ORD
Chicago
€381 Return, found 12 hours ago
€381
Return
found 12 hours ago
Select Scandinavian Airlines flight, departing Sun, 1 Mar from Dublin to Chicago, returning Sun, 8 Mar, priced at €381 found 12 hours ago
JetBlue Airways
Wed, 29 Apr - Mon, 4 May
DUB
Dublin
ORD
Chicago
€424 Return, found 5 days ago
€424
Return
found 5 days ago
Select JetBlue Airways flight, departing Wed, 29 Apr from Dublin to Chicago, returning Mon, 4 May, priced at €424 found 5 days ago
TAP Portugal
Tue, 20 Jan - Wed, 28 Jan
DUB
Dublin
ORD
Chicago
€439 Return, found 7 hours ago
€439
Return
found 7 hours ago
Select TAP Portugal flight, departing Tue, 20 Jan from Dublin to Chicago, returning Wed, 28 Jan, priced at €439 found 7 hours ago
TAP Portugal
Thu, 15 Jan - Fri, 30 Jan
WAW
Warsaw
ORD
Chicago
€450 Return, found 2 days ago
€450
Return
found 2 days ago
Select TAP Portugal flight, departing Thu, 15 Jan from Warsaw to Chicago, returning Fri, 30 Jan, priced at €450 found 2 days ago
Icelandair
Thu, 15 Jan - Thu, 22 Jan
DUB
Dublin
ORD
Chicago
€454 Return, found 5 hours ago
€454
Return
found 5 hours ago
Select Icelandair flight, departing Thu, 15 Jan from Dublin to Chicago, returning Thu, 22 Jan, priced at €454 found 5 hours ago
Lufthansa
Thu, 25 Dec - Thu, 1 Jan
WAW
Warsaw
ORD
Chicago
€494 Return, found 3 days ago
€494
Return
found 3 days ago
Select Lufthansa flight, departing Thu, 25 Dec from Warsaw to Chicago, returning Thu, 1 Jan, priced at €494 found 3 days ago
KLM
Thu, 19 Feb - Sun, 8 Mar
DUB
Dublin
ORD
Chicago
€495 Return, found 4 hours ago
€495
Return
found 4 hours ago
Select KLM flight, departing Thu, 19 Feb from Dublin to Chicago, returning Sun, 8 Mar, priced at €495 found 4 hours ago
Air France
Sun, 25 Jan - Fri, 6 Feb
DUB
Dublin
ORD
Chicago
€498 Return, found 14 hours ago
€498
Return
found 14 hours ago
Select Air France flight, departing Sun, 25 Jan from Dublin to Chicago, returning Fri, 6 Feb, priced at €498 found 14 hours ago
Swiss International Air Lines
Thu, 22 Jan - Wed, 4 Feb
WAW
Warsaw
ORD
Chicago
€498 Return, found 6 hours ago
€498
Return
found 6 hours ago
Select Swiss International Air Lines flight, departing Thu, 22 Jan from Warsaw to Chicago, returning Wed, 4 Feb, priced at €498 found 6 hours ago
KLM
Thu, 19 Feb - Sun, 8 Mar
DUB
Dublin
MDW
Chicago
€500 Return, found 4 days ago
€500
Return
found 4 days ago
Select KLM flight, departing Thu, 19 Feb from Dublin to Chicago, returning Sun, 8 Mar, priced at €500 found 4 days ago

About Illinois

Expedia offers flights to Illinois to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to Illinois or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

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 €381. 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 €381 and €500. Many lucky travellers nabbed one-way tickets from Dublin (DUB) for as little as €263.
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 €381 to €500.
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.

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.

Scandinavian Airlines
Sun, 1 Mar - Sun, 8 Mar
DUB
Dublin
ORD
Chicago
€381 Return, found 12 hours ago
€381
Return
found 12 hours ago
Select Scandinavian Airlines flight, departing Sun, 1 Mar from Dublin to Chicago, returning Sun, 8 Mar, priced at €381 found 12 hours ago
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