Bangkok to Seoul flights: cheapest fares now

Cheapest Bangkok to Seoul (BKK–ICN) flights sorted by price, the ~5 h 30 min direct flight time and the cheapest month to fly. Then let KBW plan your Seoul hotel, clinic and tours on WhatsApp.

from US$139 · one-wayFlight time 5 h 20 minCheapest in June 2027
1 adult
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Price calendar

November 2026

Tap your departure day · one-way, per person

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Cheapest month to fly

Lowest one-way fare found for each month · tap a month

Lowest fare per day · November 2026

Kiwi.com English · USD
  • US$141one-way · per personSelect
  • US$142one-way · per personSelect
  • US$142one-way · per personSelect
  • US$143one-way · per personSelect
  • US$143one-way · per personSelect
  • US$143one-way · per personSelect
  • US$145one-way · per personSelect
  • US$145one-way · per personSelect

Prices as of Nov 4, 2026 (cached fares). The price may change at booking. Fares from Aviasales; book on Aviasales or Kiwi.com (our partners, prices in your currency). KBW may earn a commission at no extra cost to you.

Bangkok → Seoul · dates not decided yet · 1 adult
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Route facts

Flight time
about 5 h 20 min direct
Airports
Bangkok Suvarnabhumi (BKK) → Seoul Incheon (ICN)
Airlines with fares
Thai Vietjet, Thai AirAsia, Air China, VietJet Air, China Southern, QW, 9G, Hainan Airlines, Vietnam Airlines, Shandong Airlines, Xiamen Air, Air Premia, Shanghai Airlines, T'way Air, Eastar Jet

KBW tips for this route

  • 1Cheapest month right now: June 2027, from US$139 one-way. For holiday dates (Lunar New Year, Chuseok, Christmas) book 2–3 months ahead; otherwise 4–8 weeks before departure is usually the sweet spot.
  • 2You land at Incheon (ICN). Central Seoul is about 1 hour away: AREX express to Seoul Station (43 min), the all-stop AREX to Hongdae, or a limousine bus straight to hotels in Gangnam and Myeongdong.
  • 3Coming for a clinic? Book the consultation for your first full day and keep the last day free. Ask the clinic how many days to stay before flying home after a treatment — our treatment guides list it too.
  • 4Once the flight is set, KBW books the rest in your language on WhatsApp: stays, clinic appointments, restaurants and tours.

Plan the rest of your trip

Stays in SeoulClinicsTours in SeoulTreatments

Frequently asked questions

How long is the flight from Bangkok to Seoul?

A direct flight takes about 5 h 20 min. Check-in, immigration and the trip into the city add 2–3 hours, so plan the first evening light.

When is the cheapest time to fly from Bangkok to Seoul?

Right now June 2027 is the cheapest month, from US$139 one-way (fares as of Nov 4, 2026). Mid-week departures are usually cheaper than Fridays and weekends.

Should I fly into Incheon (ICN) or Gimpo (GMP)?

Incheon has more flights and usually the lowest fares; Gimpo is much closer to the city (about 30 minutes by subway). If the prices are close, Gimpo saves you an hour on each end.

Which airlines fly from Bangkok to Seoul?

The fares we found are on Thai Vietjet, Thai AirAsia, Air China, VietJet Air, China Southern, QW, 9G, Hainan Airlines, Vietnam Airlines, Shandong Airlines, Xiamen Air, Air Premia, Shanghai Airlines, T'way Air, Eastar Jet. The live search on Aviasales shows every airline and agency for your dates.

Can KBW book my hotel, clinic or tours in Korea?

Yes. Book your flight on Aviasales, then message KBW on WhatsApp with your dates. We book stays, clinic consultations and tours in your language; partner clinics and stays come with member benefits.

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