Seoul (ICN) → Bangkok (BKK)

Incheon International Airport to Suvarnabhumi Airport · 1,981 nm (3,669 km) · about 5 h nonstop

Cheapest economy fares, checked daily · 40 days of history

Written and maintained by Jake McEwen
ICNBKK

Booking links are plain searches — none are affiliate links, and the site earns nothing if you book. Prices are the cheapest fares other travellers recently found, not live availability — always confirm the fare before you pay.

Economy

last checked 3h ago
$116one-way

Thai Vietjet Air · nonstop · 6h 10m · travel Mar 10 · sold via Farera

Book on Aviasales· $116 ↗Compare on Google Flights ↗Compare on Skyscanner ↗
Lowest (90d)
$70
Typical (median)
$99
Highest (90d)
$123
Checks
49
Cheapest fare seen at each daily check over the last 90 days. Green dots are checks that qualified as a deal.

When it's cheapest to travel

Travel dates of the cheapest fare found at each of our 49 daily checks — where the low fares were, not every date.

Lowest fare by travel month
Sep 2026$824×
Oct 2026$7031×
Mar 2027$1164×
Apr 2027$1225×
Jul 2027$1225×
Typical fare by day of travel
Wedcheapest$9813×
Tue$985×
Fri$994×
Mon$992×
Sat$997×
Sun$1016×
Thu$12212×
CheckedFareAirlineStopsTravelSold via
2026-10-25$116Thai Vietjet AirnonstopMar 10FareraBook ↗
2026-10-24$116Thai Vietjet AirnonstopMar 10FareraBook ↗
2026-10-23$116Thai Vietjet AirnonstopMar 10FareraBook ↗
2026-10-21$116Thai Vietjet AirnonstopMar 10FareraBook ↗
2026-10-20$122Thai Vietjet AirnonstopApr 9UbflyBook ↗
2026-10-19$123Thai Vietjet AirnonstopJul 1UbflyBook ↗
2026-10-19$122Thai Vietjet AirnonstopApr 22—Book ↗
2026-10-18$122Thai Vietjet AirnonstopApr 22—Book ↗
2026-10-16$122Thai Vietjet AirnonstopApr 22—Book ↗
2026-10-16$122Thai Vietjet AirnonstopApr 22—Book ↗
2026-10-15$123Thai Vietjet AirnonstopJul 1—Book ↗
2026-10-14$122Thai Vietjet AirnonstopJul 1—Book ↗

Airlines selling the cheapest fares

Which carrier had the lowest fare on each of our checks over the last 90 days.

  • Coyne Aviation ×23
  • Thai Vietjet Air ×14
  • T'Way Air ×8
  • Air Premia ×2
  • Jin Air ×2

About this route

Seoul (ICN) to Bangkok (BKK) is one of the busiest air routes in its market (Asia-Pacific). It links Incheon International Airport in South Korea with Suvarnabhumi Airport in Thailand. The great-circle distance is about 1,981 nautical miles (2,280 statute miles), so expect roughly 5 hours in the air nonstop.

Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now.

Fares are approximate, from public sources, and can be stale — always verify before booking.