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Flight Destinations in Illinois

View ฿20,840 flight on Wed, 28 Oct 2026Opens in a new window

Popular airlines to Illinois

  • Delta

  • Frontier Airlines

  • 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 ฿20,840 for one-way flights and ฿34,120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, 28 Apr - Wed, 5 May
BKK
Bangkok
ORD
Chicago
฿34,120 Return, found 2 days ago
฿34,120
Return
found 2 days ago
Select Air Canada flight, departing Wed, 28 Apr from Bangkok to Chicago, returning Wed, 5 May, priced at ฿34,120 found 2 days ago
Korean Air
Thu, 24 Sept - Wed, 30 Sept
BKK
Bangkok
ORD
Chicago
฿34,369 Return, found 2 days ago
฿34,369
Return
found 2 days ago
Select Korean Air flight, departing Thu, 24 Sept from Bangkok to Chicago, returning Wed, 30 Sept, priced at ฿34,369 found 2 days ago
Delta
Sat, 4 Jul - Thu, 16 Jul
BKK
Bangkok
MDW
Chicago
฿35,760 Return, found 3 days ago
฿35,760
Return
found 3 days ago
Select Delta flight, departing Sat, 4 Jul from Bangkok to Chicago, returning Thu, 16 Jul, priced at ฿35,760 found 3 days ago
Delta
Fri, 28 Aug - Thu, 3 Sept
BKK
Bangkok
ORD
Chicago
฿35,760 Return, found 2 days ago
฿35,760
Return
found 2 days ago
Select Delta flight, departing Fri, 28 Aug from Bangkok to Chicago, returning Thu, 3 Sept, priced at ฿35,760 found 2 days ago
Air Canada
Sun, 20 Sept - Mon, 28 Sept
CNX
Chiang Mai
ORD
Chicago
฿35,775 Return, found 4 days ago
฿35,775
Return
found 4 days ago
Select Air Canada flight, departing Sun, 20 Sept from Chiang Mai to Chicago, returning Mon, 28 Sept, priced at ฿35,775 found 4 days ago
United
Mon, 6 Jul - Wed, 30 Sept
BKK
Bangkok
ORD
Chicago
฿35,795 Return, found 4 days ago
฿35,795
Return
found 4 days ago
Select United flight, departing Mon, 6 Jul from Bangkok to Chicago, returning Wed, 30 Sept, priced at ฿35,795 found 4 days ago
All Nippon Airways
Tue, 7 Jul - Sun, 12 Jul
BKK
Bangkok
ORD
Chicago
฿36,795 Return, found 2 days ago
฿36,795
Return
found 2 days ago
Select All Nippon Airways flight, departing Tue, 7 Jul from Bangkok to Chicago, returning Sun, 12 Jul, priced at ฿36,795 found 2 days ago
Qatar Airways
Mon, 15 Feb - Mon, 22 Feb
BKK
Bangkok
STL
St. Louis
฿37,355 Return, found 3 days ago
฿37,355
Return
found 3 days ago
Select Qatar Airways flight, departing Mon, 15 Feb from Bangkok to St. Louis, returning Mon, 22 Feb, priced at ฿37,355 found 3 days ago
Qatar Airways
Mon, 15 Feb - Mon, 22 Feb
BKK
Bangkok
STL
St. Louis
฿39,400 Return, found 3 days ago
฿39,400
Return
found 3 days ago
Select Qatar Airways flight, departing Mon, 15 Feb from Bangkok to St. Louis, returning Mon, 22 Feb, priced at ฿39,400 found 3 days ago
Austrian Airlines
Mon, 19 Oct - Wed, 25 Nov
BKK
Bangkok
ORD
Chicago
฿40,690 Return, found 2 hours ago
฿40,690
Return
found 2 hours ago
Select Austrian Airlines flight, departing Mon, 19 Oct from Bangkok to Chicago, returning Wed, 25 Nov, priced at ฿40,690 found 2 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.

Air Canada
Wed, 28 Apr - Wed, 5 May
BKK
Bangkok
ORD
Chicago
฿34,120 Return, found 2 days ago
฿34,120
Return
found 2 days ago
Select Air Canada flight, departing Wed, 28 Apr from Bangkok to Chicago, returning Wed, 5 May, priced at ฿34,120 found 2 days 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 ฿34,120. 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 ฿34,120 and ฿40,690. Many lucky travellers nabbed one-way tickets from Bangkok (BKK) for as little as ฿20,840.
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 ฿34,120 to ฿40,690.
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
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