Cheap flights to Illinois

Popular airlines to Illinois

  • Delta

    Delta

  • Spirit Airlines

    Spirit Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Frontier Airlines

    Frontier Airlines

  • Southwest Airlines

    Southwest Airlines

  • Alaska Airlines

    Alaska Airlines

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Popular cities in Illinois

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

Chicago

Chicago

Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at €78 for one-way flights and €151 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 18 Sep - Mon, 22 Sep
PHL
Philadelphia
ORD
Chicago
€151 Return, found 6 days ago
€151
Return
found 6 days ago
Select American Airlines flight, departing Thu, 18 Sep from Philadelphia to Chicago, returning Mon, 22 Sep, priced at €151 found 6 days ago
Delta
Wed, 3 Sep - Thu, 4 Sep
PHL
Philadelphia
MDW
Chicago
€172 Return, found 22 hours ago
€172
Return
found 22 hours ago
Select Delta flight, departing Wed, 3 Sep from Philadelphia to Chicago, returning Thu, 4 Sep, priced at €172 found 22 hours ago
Delta
Wed, 3 Sep - Thu, 4 Sep
PHL
Philadelphia
ORD
Chicago
€172 Return, found 22 hours ago
€172
Return
found 22 hours ago
Select Delta flight, departing Wed, 3 Sep from Philadelphia to Chicago, returning Thu, 4 Sep, priced at €172 found 22 hours ago
JetBlue Airways
Thu, 4 Sep - Mon, 8 Sep
PHL
Philadelphia
ORD
Chicago
€175 Return, found 23 hours ago
€175
Return
found 23 hours ago
Select JetBlue Airways flight, departing Thu, 4 Sep from Philadelphia to Chicago, returning Mon, 8 Sep, priced at €175 found 23 hours ago
American Airlines
Sat, 30 Aug - Mon, 1 Sep
PHL
Philadelphia
STL
St. Louis
€201 Return, found 4 days ago
€201
Return
found 4 days ago
Select American Airlines flight, departing Sat, 30 Aug from Philadelphia to St. Louis, returning Mon, 1 Sep, priced at €201 found 4 days ago
United
Thu, 25 Sep - Sun, 28 Sep
PHL
Philadelphia
ORD
Chicago
€215 Return, found 17 hours ago
€215
Return
found 17 hours ago
Select United flight, departing Thu, 25 Sep from Philadelphia to Chicago, returning Sun, 28 Sep, priced at €215 found 17 hours ago
Icelandair
Sat, 22 Nov - Sun, 30 Nov
DUB
Dublin
ORD
Chicago
€346 Return, found 3 days ago
€346
Return
found 3 days ago
Select Icelandair flight, departing Sat, 22 Nov from Dublin to Chicago, returning Sun, 30 Nov, priced at €346 found 3 days ago
TAP Portugal
Fri, 7 Nov - Fri, 14 Nov
DUB
Dublin
ORD
Chicago
€354 Return, found 1 day ago
€354
Return
found 1 day ago
Select TAP Portugal flight, departing Fri, 7 Nov from Dublin to Chicago, returning Fri, 14 Nov, priced at €354 found 1 day ago
Aer Lingus
Wed, 24 Sep - Tue, 30 Sep
DUB
Dublin
ORD
Chicago
€397 Return, found 3 days ago
€397
Return
found 3 days ago
Select Aer Lingus flight, departing Wed, 24 Sep from Dublin to Chicago, returning Tue, 30 Sep, priced at €397 found 3 days ago
British Airways
Fri, 23 Jan - Tue, 27 Jan
DUB
Dublin
ORD
Chicago
€397 Return, found 3 days ago
€397
Return
found 3 days ago
Select British Airways flight, departing Fri, 23 Jan from Dublin to Chicago, returning Tue, 27 Jan, priced at €397 found 3 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 €151. 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 €151 and €469. Many lucky travellers nabbed one-way tickets from Philadelphia (PHL) for as little as €78.
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 €151 to €469.
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.

Icelandair
Sat, 22 Nov - Sun, 30 Nov
DUB
Dublin
ORD
Chicago
€346 Return, found 3 days ago
€346
Return
found 3 days ago
Select Icelandair flight, departing Sat, 22 Nov from Dublin to Chicago, returning Sun, 30 Nov, priced at €346 found 3 days ago
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