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How much is the cheapest flight to Illinois?
Prices were available within the past 7 days and start at ₩797,700 for one-way flights and ₩1,274,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Wed, Oct 16 - Tue, Oct 22
GMP
Gimpo Intl.
ORD
O'Hare Intl.
₩1,274,100 Roundtrip, just found
₩1,274,100
Roundtrip
just found
Tue, Sep 24 - Tue, Oct 8
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,303,600 Roundtrip, found 1 day ago
₩1,303,600
Roundtrip
found 1 day ago
Sat, Nov 30 - Fri, Dec 6
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,332,100 Roundtrip, found 4 hours ago
₩1,332,100
Roundtrip
found 4 hours ago
Thu, Sep 5 - Wed, Sep 11
GMP
Gimpo Intl.
SPI
Abraham Lincoln Capital
₩1,367,300 Roundtrip, found 21 hours ago
₩1,367,300
Roundtrip
found 21 hours ago
Wed, Oct 16 - Tue, Oct 22
GMP
Gimpo Intl.
ORD
O'Hare Intl.
₩1,415,600 Roundtrip, just found
₩1,415,600
Roundtrip
just found
Tue, Sep 24 - Mon, Sep 30
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,415,600 Roundtrip, found 4 hours ago
₩1,415,600
Roundtrip
found 4 hours ago
Mon, Sep 9 - Mon, Sep 30
ICN
Incheon Intl.
MLI
Quad City Intl.
₩1,472,500 Roundtrip, found 4 days ago
₩1,472,500
Roundtrip
found 4 days ago
Tue, Oct 1 - Mon, Oct 14
ICN
Incheon Intl.
STL
Lambert-St. Louis Intl.
₩1,524,400 Roundtrip, found 2 days ago
₩1,524,400
Roundtrip
found 2 days ago
Tue, Sep 17 - Wed, Sep 25
GMP
Gimpo Intl.
STL
Lambert-St. Louis Intl.
₩1,581,700 Roundtrip, found 1 hour ago
₩1,581,700
Roundtrip
found 1 hour ago
Wed, Sep 11 - Wed, Sep 18
ICN
Incheon Intl.
CMI
University Of Illinois Urbana-Champaign Williard
₩1,605,400 Roundtrip, found 1 day ago
₩1,605,400
Roundtrip
found 1 day ago
About Illinois
Expedia offers flights to Illinois to meet every traveler'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
Explore Illinois
Flying to Illinois? Explore Illinois with Expedia's Travel Guides to find the best hotels, vacation packages, car rental deals and more!
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.
Tue, Sep 24 - Tue, Oct 8
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,303,600 Roundtrip, found 1 day ago
₩1,303,600
Roundtrip
found 1 day ago
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Top Illinois Hotels
- Congress Plaza Hotel
- River Hotel
- Eurostars Magnificent Mile
- Hotel Felix River North/Magnificent Mile
- Warwick Allerton - Chicago
- The Westin Michigan Avenue Chicago
- InterContinental Chicago Magnificent Mile, an IHG Hotel
- Club Quarters Hotel, Central Loop, Chicago
- Freehand Chicago
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- The Royal Sonesta Chicago Downtown
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