Cheap Flights to Illinois from NT$19,237

View NT$19,237 flight on Fri, 2026/4/24Opens in a new window

Popular airlines to Illinois

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  • Frontier Airlines

  • American Airlines

  • United

  • Southwest Airlines

  • Spirit Airlines

  • Alaska Airlines

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How much is the cheapest flight to Illinois?

Prices were available within the past 7 days and start at NT$19,237 for one-way flights and NT$29,132 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$29,132 Roundtrip, found 3 days ago
NT$29,132
Roundtrip
found 3 days ago
Select Asiana Airlines flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$29,132 found 3 days ago
Asiana Airlines
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$31,829 Roundtrip, found 3 days ago
NT$31,829
Roundtrip
found 3 days ago
Select Asiana Airlines flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$31,829 found 3 days ago
Air Canada
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$33,226 Roundtrip, found 3 days ago
NT$33,226
Roundtrip
found 3 days ago
Select Air Canada flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$33,226 found 3 days ago
United
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$33,788 Roundtrip, found 3 days ago
NT$33,788
Roundtrip
found 3 days ago
Select United flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$33,788 found 3 days ago
LOT-Polish Airlines
Tue, Jun 16 - Sat, Sep 12
ICN
Seoul
ORD
Chicago
NT$36,653 Roundtrip, found 1 day ago
NT$36,653
Roundtrip
found 1 day ago
Select LOT-Polish Airlines flight, departing Tue, Jun 16 from Seoul to Chicago, returning Sat, Sep 12, priced at NT$36,653 found 1 day ago
Delta
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$37,144 Roundtrip, found 3 days ago
NT$37,144
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$37,144 found 3 days ago
EVA Airways
Tue, Jun 16 - Sat, Sep 12
ICN
Seoul
ORD
Chicago
NT$38,032 Roundtrip, found 1 day ago
NT$38,032
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Tue, Jun 16 from Seoul to Chicago, returning Sat, Sep 12, priced at NT$38,032 found 1 day ago
United
Fri, Apr 10 - Mon, Apr 13
ICN
Seoul
PIA
Peoria
NT$39,806 Roundtrip, found 1 day ago
NT$39,806
Roundtrip
found 1 day ago
Select United flight, departing Fri, Apr 10 from Seoul to Peoria, returning Mon, Apr 13, priced at NT$39,806 found 1 day ago
Turkish Airlines
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
ORD
Chicago
NT$41,012 Roundtrip, found 3 days ago
NT$41,012
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$41,012 found 3 days ago
Delta
Thu, Apr 16 - Wed, Apr 22
ICN
Seoul
MDW
Chicago
NT$41,459 Roundtrip, found 3 days ago
NT$41,459
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Apr 16 from Seoul to Chicago, returning Wed, Apr 22, priced at NT$41,459 found 3 days ago

Trending flights to Illinois

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Wed, Apr 22 - Wed, Apr 29
RMQ
Taichung
MDW
Chicago
NT$31,451 Roundtrip, found 2 days ago
NT$31,451
Roundtrip
found 2 days ago
Select Korean Air flight, departing Wed, Apr 22 from Taichung to Chicago, returning Wed, Apr 29, priced at NT$31,451 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 traveling somewhere new or rendezvousing at a favorite 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 NT$29,132. 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 NT$29,132 and NT$41,459. Many lucky travelers nabbed one-way tickets from Seoul (ICN) for as little as NT$19,237.
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.

When is the cheapest time to fly to Illinois?
Take off for Illinois early in the week and you'll usually be rewarded more economical fares. Tuesday is typically the cheapest day to hop on a plane, followed by Monday. If you're hoping to avoid the most expensive flights, steer clear of Saturdays.
How much is a plane ticket to Illinois?
In the last seven days, plane fares to Illinois ranged from NT$29,132 to NT$41,459.
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 65ºF to 75ºF 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.

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