Flight Destinations in Illinois

View ฿15,905 flight on Tue, 19 May 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

  • Alaska Airlines

    Alaska Airlines

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Cheap round-trip flights to Illinois

Prices were available within the past 7 days and start at ฿15,905 for one-way flights and ฿28,930 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Thu, 1 Oct - Thu, 15 Oct
BKK
Bangkok
STL
St. Louis
฿28,930 Return, found 3 days ago
฿28,930
Return
found 3 days ago
Select Philippine Airlines flight, departing Thu, 1 Oct from Bangkok to St. Louis, returning Thu, 15 Oct, priced at ฿28,930 found 3 days ago
Air Canada
Wed, 7 Oct - Mon, 12 Oct
BKK
Bangkok
ORD
Chicago
฿30,305 Return, found 3 days ago
฿30,305
Return
found 3 days ago
Select Air Canada flight, departing Wed, 7 Oct from Bangkok to Chicago, returning Mon, 12 Oct, priced at ฿30,305 found 3 days ago
EVA Airways
Tue, 12 May - Sat, 19 Sept
CNX
Chiang Mai
ORD
Chicago
฿31,035 Return, found 4 days ago
฿31,035
Return
found 4 days ago
Select EVA Airways flight, departing Tue, 12 May from Chiang Mai to Chicago, returning Sat, 19 Sept, priced at ฿31,035 found 4 days ago
Delta
Mon, 7 Sept - Mon, 14 Sept
BKK
Bangkok
MDW
Chicago
฿32,870 Return, found 5 days ago
฿32,870
Return
found 5 days ago
Select Delta flight, departing Mon, 7 Sept from Bangkok to Chicago, returning Mon, 14 Sept, priced at ฿32,870 found 5 days ago
United
Wed, 16 Sept - Wed, 30 Sept
BKK
Bangkok
ORD
Chicago
฿33,125 Return, found 1 day ago
฿33,125
Return
found 1 day ago
Select United flight, departing Wed, 16 Sept from Bangkok to Chicago, returning Wed, 30 Sept, priced at ฿33,125 found 1 day ago
All Nippon Airways
Mon, 11 May - Thu, 17 Sept
BKK
Bangkok
ORD
Chicago
฿34,060 Return, found 10 hours ago
฿34,060
Return
found 10 hours ago
Select All Nippon Airways flight, departing Mon, 11 May from Bangkok to Chicago, returning Thu, 17 Sept, priced at ฿34,060 found 10 hours ago
Cathay Pacific
Wed, 18 Nov - Wed, 25 Nov
BKK
Bangkok
MLI
Moline
฿34,560 Return, just found
฿34,560
Return
just found
Select Cathay Pacific flight, departing Wed, 18 Nov from Bangkok to Moline, returning Wed, 25 Nov, priced at ฿34,560 just found
EVA Airways
Tue, 12 May - Sat, 19 Sept
CNX
Chiang Mai
ORD
Chicago
฿35,700 Return, found 4 days ago
฿35,700
Return
found 4 days ago
Select EVA Airways flight, departing Tue, 12 May from Chiang Mai to Chicago, returning Sat, 19 Sept, priced at ฿35,700 found 4 days ago
Thai Airways International
Fri, 17 Apr - Thu, 23 Apr
BKK
Bangkok
ORD
Chicago
฿36,950 Return, found 8 hours ago
฿36,950
Return
found 8 hours ago
Select Thai Airways International flight, departing Fri, 17 Apr from Bangkok to Chicago, returning Thu, 23 Apr, priced at ฿36,950 found 8 hours ago
Cathay Pacific
Fri, 13 Mar - Sun, 29 Mar
BKK
Bangkok
STL
St. Louis
฿37,240 Return, found 4 days ago
฿37,240
Return
found 4 days ago
Select Cathay Pacific flight, departing Fri, 13 Mar from Bangkok to St. Louis, returning Sun, 29 Mar, priced at ฿37,240 found 4 days 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
Thu, 1 Oct - Thu, 15 Oct
BKK
Bangkok
STL
St. Louis
฿28,930 Return, found 3 days ago
฿28,930
Return
found 3 days ago
Select Philippine Airlines flight, departing Thu, 1 Oct from Bangkok to St. Louis, returning Thu, 15 Oct, priced at ฿28,930 found 3 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 ฿28,930. 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 ฿28,930 and ฿37,240. Many lucky travellers nabbed one-way tickets from Bangkok (BKK) for as little as ฿15,905.
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 ฿28,930 to ฿37,240.
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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