Flight Destinations in Illinois

View ฿15,885 flight on Wed, 10 Jun 2026Opens in a new window

Popular airlines to Illinois

  • Delta

    Delta

  • American Airlines

    American Airlines

  • Frontier Airlines

    Frontier Airlines

  • United

    United

  • Spirit Airlines

    Spirit Airlines

  • Southwest Airlines

    Southwest 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 ฿15,885 for one-way flights and ฿30,910 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Fri, 20 Mar - Fri, 27 Mar
BKK
Bangkok
ORD
Chicago
฿30,910 Return, found 2 hours ago
฿30,910
Return
found 2 hours ago
Select Korean Air flight, departing Fri, 20 Mar from Bangkok to Chicago, returning Fri, 27 Mar, priced at ฿30,910 found 2 hours ago
Air Canada
Thu, 22 Jan - Wed, 4 Feb
BKK
Bangkok
ORD
Chicago
฿31,100 Return, found 6 hours ago
฿31,100
Return
found 6 hours ago
Select Air Canada flight, departing Thu, 22 Jan from Bangkok to Chicago, returning Wed, 4 Feb, priced at ฿31,100 found 6 hours ago
EVA Airways
Mon, 2 Feb - Tue, 7 Jul
BKK
Bangkok
STL
St. Louis
฿32,560 Return, found 2 days ago
฿32,560
Return
found 2 days ago
Select EVA Airways flight, departing Mon, 2 Feb from Bangkok to St. Louis, returning Tue, 7 Jul, priced at ฿32,560 found 2 days ago
Delta
Thu, 22 Jan - Wed, 4 Feb
BKK
Bangkok
ORD
Chicago
฿32,970 Return, found 6 hours ago
฿32,970
Return
found 6 hours ago
Select Delta flight, departing Thu, 22 Jan from Bangkok to Chicago, returning Wed, 4 Feb, priced at ฿32,970 found 6 hours ago
United
Mon, 18 May - Sun, 23 Aug
BKK
Bangkok
ORD
Chicago
฿33,040 Return, found 1 day ago
฿33,040
Return
found 1 day ago
Select United flight, departing Mon, 18 May from Bangkok to Chicago, returning Sun, 23 Aug, priced at ฿33,040 found 1 day ago
Bangkok Airways
Mon, 19 Jan - Tue, 27 Jan
CNX
Chiang Mai
ORD
Chicago
฿33,050 Return, found 1 day ago
฿33,050
Return
found 1 day ago
Select Bangkok Airways flight, departing Mon, 19 Jan from Chiang Mai to Chicago, returning Tue, 27 Jan, priced at ฿33,050 found 1 day ago
Japan Airlines
Fri, 23 Jan - Sun, 25 Jan
BKK
Bangkok
ORD
Chicago
฿33,535 Return, found 9 hours ago
฿33,535
Return
found 9 hours ago
Select Japan Airlines flight, departing Fri, 23 Jan from Bangkok to Chicago, returning Sun, 25 Jan, priced at ฿33,535 found 9 hours ago
All Nippon Airways
Sun, 15 Feb - Sun, 22 Feb
BKK
Bangkok
ORD
Chicago
฿33,970 Return, found 1 day ago
฿33,970
Return
found 1 day ago
Select All Nippon Airways flight, departing Sun, 15 Feb from Bangkok to Chicago, returning Sun, 22 Feb, priced at ฿33,970 found 1 day ago
Cathay Pacific
Thu, 3 Sept - Sun, 6 Sept
BKK
Bangkok
PIA
Peoria
฿34,500 Return, found 20 hours ago
฿34,500
Return
found 20 hours ago
Select Cathay Pacific flight, departing Thu, 3 Sept from Bangkok to Peoria, returning Sun, 6 Sept, priced at ฿34,500 found 20 hours ago
Delta
Wed, 6 May - Wed, 13 May
BKK
Bangkok
MDW
Chicago
฿35,470 Return, found 1 day ago
฿35,470
Return
found 1 day ago
Select Delta flight, departing Wed, 6 May from Bangkok to Chicago, returning Wed, 13 May, priced at ฿35,470 found 1 day 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 ฿30,910. 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 ฿30,910 and ฿35,470. Many lucky travellers nabbed one-way tickets from Bangkok (BKK) for as little as ฿15,885.
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 ฿30,910 to ฿35,470.
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.

Korean Air
Fri, 20 Mar - Fri, 27 Mar
BKK
Bangkok
ORD
Chicago
฿30,910 Return, found 2 hours ago
฿30,910
Return
found 2 hours ago
Select Korean Air flight, departing Fri, 20 Mar from Bangkok to Chicago, returning Fri, 27 Mar, priced at ฿30,910 found 2 hours ago
*Available to Expedia members.