Cheapest return flights from Ulaanbaatar (UBN) to Seoul (ICN)

Cheapest month: December 2026, from $ 377. Book in one tap, or open a month for every date.

All destinations from Ulaanbaatar (UBN)

One-wayReturn

  • October 2026

    27–29 Oct 2 nights
    $ 390 return
    Direct Jeju Air
    Price seen 9 Oct
    October dates

  • December 2026

    31 Dec – 22 Feb 2027 53 nights
    $ 377 return Cheapest month
    Direct Jeju Air
    Price seen 8 Oct
    December dates

  • January 2027

    26 Jan – 2 Feb 2027 7 nights
    $ 383 return
    Direct MIAT Mongolian Airlines
    Price seen 8 Oct
    January dates

  • February 2027

    20 Feb – 10 Jul 2027 140 nights
    $ 491 return
    Direct Asiana Airlines
    Price seen 8 Oct
    February dates
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Deals for one-way flights from Ulaanbaatar to Seoul.

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Updated Oct 9, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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