Flights to Southwest Illinois from Seoul - ￥77,210

View ￥77,210 flight on Thu, Sep 11, 2025Opens in a new window

Popular airlines from Seoul to Southwest Illinois

  • Peach

    Peach

  • Skymark Airlines

    Skymark Airlines

  • All Nippon Airways

    All Nippon Airways

  • Japan Airlines

    Japan Airlines

  • Jetstar Japan

    Jetstar Japan

  • Solaseed Air

    Solaseed Air

  • STARFLYER

    STARFLYER

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seoul to Southwest Illinois (SEL-STL)

Prices were available within the past 7 days and start at ￥77,210 for one-way flights and ￥98,020 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep 11 - Wed, Sep 17
ICN
Seoul
STL
St. Louis
￥98,020 Roundtrip, found 6 days ago
￥98,020
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Sep 11 from Seoul to St. Louis, returning Wed, Sep 17, priced at ￥98,020 found 6 days ago
Delta
Thu, Sep 11 - Wed, Sep 17
ICN
Seoul
STL
St. Louis
￥98,540 Roundtrip, found 6 days ago
￥98,540
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 11 from Seoul to St. Louis, returning Wed, Sep 17, priced at ￥98,540 found 6 days ago
Korean Air
Thu, Sep 11 - Wed, Sep 17
ICN
Seoul
STL
St. Louis
￥108,460 Roundtrip, found 6 days ago
￥108,460
Roundtrip
found 6 days ago
Select Korean Air flight, departing Thu, Sep 11 from Seoul to St. Louis, returning Wed, Sep 17, priced at ￥108,460 found 6 days ago
United
Thu, Oct 9 - Sun, Oct 26
ICN
Seoul
STL
St. Louis
￥108,710 Roundtrip, found 2 days ago
￥108,710
Roundtrip
found 2 days ago
Select United flight, departing Thu, Oct 9 from Seoul to St. Louis, returning Sun, Oct 26, priced at ￥108,710 found 2 days ago
Air Canada
Thu, Sep 11 - Wed, Sep 17
ICN
Seoul
STL
St. Louis
￥141,310 Roundtrip, found 6 days ago
￥141,310
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Sep 11 from Seoul to St. Louis, returning Wed, Sep 17, priced at ￥141,310 found 6 days ago
EVA Airways
Fri, Oct 10 - Sat, Oct 25
GMP
Seoul
STL
St. Louis
￥171,550 Roundtrip, found 2 days ago
￥171,550
Roundtrip
found 2 days ago
Select EVA Airways flight, departing Fri, Oct 10 from Seoul to St. Louis, returning Sat, Oct 25, priced at ￥171,550 found 2 days ago
*Available to Expedia members.