Flight Destinations in Illinois

View ฿17,020 flight on Tue, 19 May 2026Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • American Airlines

  • United

  • Southwest Airlines

  • Spirit Airlines

  • Alaska Airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at ฿17,020 for one-way flights and ฿22,980 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 23 Sept - Wed, 14 Oct
HKT
Phuket
ORD
Chicago
฿30,890 Return, found 11 hours ago
฿30,890
Return
found 11 hours ago
Select Delta flight, departing Wed, 23 Sept from Phuket to Chicago, returning Wed, 14 Oct, priced at ฿30,890 found 11 hours ago
Korean Air
Mon, 7 Sept - Mon, 28 Sept
HKT
Phuket
ORD
Chicago
฿31,452 Return, found 11 hours ago
฿31,452
Return
found 11 hours ago
Select Korean Air flight, departing Mon, 7 Sept from Phuket to Chicago, returning Mon, 28 Sept, priced at ฿31,452 found 11 hours ago
Air Canada
Wed, 7 Oct - Wed, 28 Oct
HKT
Phuket
ORD
Chicago
฿33,400 Return, found 11 hours ago
฿33,400
Return
found 11 hours ago
Select Air Canada flight, departing Wed, 7 Oct from Phuket to Chicago, returning Wed, 28 Oct, priced at ฿33,400 found 11 hours ago
Qatar Airways
Mon, 16 Mar - Mon, 6 Apr
HKT
Phuket
ORD
Chicago
฿35,235 Return, found 11 hours ago
฿35,235
Return
found 11 hours ago
Select Qatar Airways flight, departing Mon, 16 Mar from Phuket to Chicago, returning Mon, 6 Apr, priced at ฿35,235 found 11 hours ago
Swiss International Air Lines
Mon, 26 Oct - Mon, 16 Nov
HKT
Phuket
ORD
Chicago
฿38,045 Return, found 12 hours ago
฿38,045
Return
found 12 hours ago
Select Swiss International Air Lines flight, departing Mon, 26 Oct from Phuket to Chicago, returning Mon, 16 Nov, priced at ฿38,045 found 12 hours ago
Delta
Tue, 14 Apr - Tue, 21 Apr
HKT
Phuket
MDW
Chicago
฿38,095 Return, found 5 days ago
฿38,095
Return
found 5 days ago
Select Delta flight, departing Tue, 14 Apr from Phuket to Chicago, returning Tue, 21 Apr, priced at ฿38,095 found 5 days ago
Lufthansa
Tue, 13 Oct - Tue, 3 Nov
HKT
Phuket
ORD
Chicago
฿38,110 Return, found 11 hours ago
฿38,110
Return
found 11 hours ago
Select Lufthansa flight, departing Tue, 13 Oct from Phuket to Chicago, returning Tue, 3 Nov, priced at ฿38,110 found 11 hours ago
Turkish Airlines
Wed, 23 Sept - Wed, 14 Oct
HKT
Phuket
ORD
Chicago
฿38,435 Return, found 11 hours ago
฿38,435
Return
found 11 hours ago
Select Turkish Airlines flight, departing Wed, 23 Sept from Phuket to Chicago, returning Wed, 14 Oct, priced at ฿38,435 found 11 hours ago
Cathay Pacific
Sun, 13 Sept - Sun, 4 Oct
HKT
Phuket
ORD
Chicago
฿39,105 Return, found 11 hours ago
฿39,105
Return
found 11 hours ago
Select Cathay Pacific flight, departing Sun, 13 Sept from Phuket to Chicago, returning Sun, 4 Oct, priced at ฿39,105 found 11 hours ago
EVA Airways
Sun, 13 Sept - Sun, 4 Oct
HKT
Phuket
ORD
Chicago
฿40,250 Return, found 11 hours ago
฿40,250
Return
found 11 hours ago
Select EVA Airways flight, departing Sun, 13 Sept from Phuket to Chicago, returning Sun, 4 Oct, priced at ฿40,250 found 11 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.

Philippine Airlines
Tue, 6 Oct - Fri, 30 Oct
BKK
Bangkok
ORD
Chicago
฿22,980 Return, found 6 hours ago
฿22,980
Return
found 6 hours ago
Select Philippine Airlines flight, departing Tue, 6 Oct from Bangkok to Chicago, returning Fri, 30 Oct, priced at ฿22,980 found 6 hours 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 ฿22,980. 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 ฿22,980 and ฿40,250. Many lucky travellers nabbed one-way tickets from Phuket (HKT) for as little as ฿17,020.
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 ฿22,980 to ฿40,250.
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

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.
About Illinois

Explore a world of travel with Expedia

*Available to Expedia members.