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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 ₩1,303,600 for 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
Sat, Nov 30 - Fri, Dec 6
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,332,100 Roundtrip, found 1 hour ago
₩1,332,100
Roundtrip
found 1 hour ago
Tue, Sep 24 - Mon, Sep 30
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,415,600 Roundtrip, just found
₩1,415,600
Roundtrip
just found
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
Wed, Sep 11 - Wed, Sep 18
ICN
Incheon Intl.
CMI
University Of Illinois Urbana-Champaign Williard
₩1,605,400 Roundtrip, found 22 hours ago
₩1,605,400
Roundtrip
found 22 hours ago
Wed, Oct 9 - Wed, Oct 16
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,636,400 Roundtrip, just found
₩1,636,400
Roundtrip
just found
Wed, Oct 9 - Wed, Oct 16
ICN
Incheon Intl.
ORD
O'Hare Intl.
₩1,657,700 Roundtrip, just found
₩1,657,700
Roundtrip
just found
Fri, Oct 4 - Sat, Oct 12
ICN
Incheon Intl.
BMI
Central Illinois Regional
₩1,690,000 Roundtrip, found 5 days ago
₩1,690,000
Roundtrip
found 5 days ago
Thu, Jun 13 - Thu, Jun 20
ICN
Incheon Intl.
EVV
Evansville Regional
₩1,717,900 Roundtrip, just found
₩1,717,900
Roundtrip
just found
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
- Hilton Garden Inn Chicago Downtown/Magnificent Mile
- The Royal Sonesta Chicago Downtown
- Hyatt Regency Chicago
- The Allegro Royal Sonesta Hotel Chicago Loop
More Popular Airlines
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