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Flights from Seoul to Champaign

Search cheap flights from Seoul to Champaign in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$924, and round-trip tickets start at US$1,611.

      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Sun, Sep 6 | American Airlines
        CMI 07:05
        18h 40m
        1 stop
        ICN 15:45
        Champaign - Seoul | Thu, Sep 10 | American Airlines
        US$1,611 US$3,121
        48% off
        48% off
        US$3,121 US$1,611
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Sun, Aug 30 | American Airlines
        CMI 07:00
        18h 45m
        1 stop
        ICN 15:45
        Champaign - Seoul | Sun, Sep 6 | American Airlines
        US$1,632 US$3,121
        48% off
        48% off
        US$3,121 US$1,632
      • ICN 09:30
        18h 45m
        1 stop
        CMI 14:15
        Seoul - Champaign | Sun, Sep 6 | Korean Air
        CMI 14:40
        36h
        1 stop
        ICN 16:40
        Champaign - Seoul | Sat, Sep 12 | American Airlines
        US$1,894 US$3,121
        39% off
        39% off
        US$3,121 US$1,894
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Wed, Aug 19 | American Airlines
        CMI 07:00
        18h 45m
        1 stop
        ICN 15:45
        Champaign - Seoul | Mon, Aug 24 | American Airlines
        US$1,901
        39% off
        US$3,121 US$1,901
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Sat, Aug 22 | Korean Air
        CMI 07:00
        18h 45m
        1 stop
        ICN 15:45
        Champaign - Seoul | Fri, Aug 28 | American Airlines
        US$2,076
        33% off
        US$3,121 US$2,076
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Fri, Aug 14 | American Airlines
        CMI 07:00
        18h 45m
        1 stop
        ICN 15:45
        Champaign - Seoul | Fri, Aug 21 | American Airlines
        US$2,132
        32% off
        US$3,121 US$2,132
      • ICN 17:50
        18h 9m
        1 stop
        CMI 21:59
        Seoul - Champaign | Fri, Jul 24 | American Airlines
        CMI 07:29
        18h 16m
        1 stop
        ICN 15:45
        Champaign - Seoul | Fri, Jul 31 | American Airlines
        US$2,237
        28% off
        US$3,121 US$2,237
      • ICN 17:50
        18h 9m
        1 stop
        CMI 21:59
        Seoul - Champaign | Mon, Aug 3 | American Airlines
        CMI 07:00
        18h 45m
        1 stop
        ICN 15:45
        Champaign - Seoul | Fri, Aug 7 | American Airlines
        US$2,319
        26% off
        US$3,121 US$2,319
      • ICN 09:30
        18h 45m
        1 stop
        CMI 14:15
        Seoul - Champaign | Wed, Aug 19 | Korean Air
        CMI 07:00
        19h 40m
        1 stop
        ICN 16:40
        Champaign - Seoul | Mon, Aug 24 | American Airlines
        US$2,322
        26% off
        US$3,121 US$2,322
      • ICN 10:40
        19h 44m
        1 stop
        CMI 16:24
        Seoul - Champaign | Mon, Aug 10 | Korean Air
        CMI 14:47
        34h 58m
        1 stop
        ICN 15:45
        Champaign - Seoul | Mon, Aug 17 | American Airlines
        US$2,403
        23% off
        US$3,121 US$2,403
      • SEL 13:00
        17h 25m
        1 stop
        CMI 14:00
        Seoul - Champaign | Thu, Jul 23 | Normal Airline
        CMI 15:00
        6h
        Nonstop
        SEL 16:00
        Champaign - Seoul | Sat, Jul 25 | Normal Airline
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      • ICN 17:50
        17h 50m
        1 stop
        CMI 21:40
        Seoul - Champaign | Wed, Sep 9 | American Airlines
        US$924 US$1,212
        24% off
        24% off
        US$1,212 US$924
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Mon, Aug 31 | American Airlines
        US$928 US$1,212
        23% off
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Wed, Sep 2 | American Airlines
        US$928 US$1,212
        23% off
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Thu, Sep 3 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Wed, Aug 26 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Fri, Sep 4 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Thu, Aug 27 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Fri, Aug 28 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        18h 10m
        1 stop
        CMI 22:00
        Seoul - Champaign | Mon, Sep 7 | American Airlines
        US$928
        23% off
        US$1,212 US$928
      • ICN 17:50
        34h 25m
        1 stop
        CMI 14:15
        Seoul - Champaign | Tue, Aug 25 | American Airlines
        US$933
        23% off
        US$1,212 US$933
      • SEL 13:00
        17h 25m
        1 stop
        CMI 14:00
        Seoul - Champaign | Thu, Jul 23 | Normal Airline
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        Find more flights

Seoul to Champaign Flight Details

The distance between Seoul and Champaign is about 10,673.75 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is September.

Cheapest one-way flight priceUS$924
Cheapest return ticket priceUS$1,611
Cheapest monthSeptember
Peak season for travelJuly
Flight distance10,673.75 km
Flight statistics for the Seoul–Champaign route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Seoul to Champaign (SEL-CMI)?

    Based on Trip.com data, American Airlines offers one-way fares as low as US$924 on Cheapest nonstop routes (e.g. ICN to CMI on Wed, Sep 9), while American Airlines offers Cheapest nonstop round-trips from US$1,611 departing on Sun, Sep 6 and returning on Thu, Sep 10.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seoul to Champaign is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seoul to Champaign, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 9, with one-way flights priced at just US$924.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Champaign travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seoul to Champaign is September, when demand for travel is lower.
  • After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Seoul to Champaign on July 24, 2026 with American Airlines, with prices starting at US$2,237.
  • The time difference between Champaign and Seoul is 15h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.