T'way Air
$120
BKK → ICN
Bangkok → Seoul
Pingsme.com compares prices from 87 airlines on the Bangkok–Seoul route and highlights useful fare changes.
About Bangkok to Seoul flights
Pingsme.com monitors airlines operating the Bangkok (BKK) to Seoul (ICN) route. We check prices regularly and surface useful drops and fare signals. Prices shown are per person, one-way, in economy class.
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Bangkok and Seoul sit at opposite ends of Asia's weather map. One is warm in every month of the year; the other runs through four distinct seasons, from cherry blossom to snow. That contrast is a large part of why travellers keep making this hop — for Korean food, K-culture, palaces framed by autumn colour, and a climate that actually changes while you are there.
The route carries a broad mix: Thai holidaymakers and students, Korean travellers heading home, and visitors from across Southeast Asia who use Bangkok as their staging point. If you are starting in Vietnam, pairing this leg with a Ho Chi Minh City – Bangkok flight is a common way to build the trip, and you can compare that first hop at /en/flights/sgn-bkk.
Fares between two cities this well connected move constantly with the season and the day of the week you pick. Pingsme compares 87 airlines across 109 routes and refreshes prices every two hours, so what you see here reflects what is being sold right now rather than a snapshot from last week.
When should you fly from Bangkok to Seoul?
September to November is the window most people would pick if they could only go once. Autumn foliage spreads across the city's hills and palace grounds, skies are clear, temperatures settle at a comfortable 15–22°C, and it is festival season. After Bangkok's heat and humidity, that stretch of weather alone justifies the trip.
March to May is the other headline period, built around cherry blossom season, which typically peaks in early April. The weather is comfortable and Seoul's parks are at their absolute best. Both of these windows are heavily booked, so treat them as peak and secure your dates well before you would for an ordinary trip.
December to February is the cold season, roughly -5 to 5°C, which is a shock if your baseline is Bangkok in any month. It is also the most rewarding season for anyone who has never experienced winter properly: ski slopes within reach of the city, winter festivals, and the cheapest flights of the year. Pack real cold-weather clothing and this becomes the best-value version of the trip.
On arrival: money, timezone, getting around
South Korea uses the Korean Won (KRW) and the working language is Korean. Seoul runs on UTC+9, so move your watch forward on arrival and factor that into anything you have scheduled for your first evening. English signage is good on the subway and at major sights, less so in neighbourhood restaurants.
Download Naver Maps before you leave Bangkok. Google Maps does not function properly in South Korea because of national security restrictions on mapping data, and discovering that while standing at an Incheon bus stop is a poor use of your first hour. Naver handles subway routing, walking directions and restaurant listings.
For transport, buy a T-money card at any convenience store. It covers all buses, the entire subway network, and even some taxis, and topping it up takes seconds at the same counter. One paperwork note worth checking early: the K-ETA electronic travel authorisation is required for Vietnamese passport holders and must be applied for online at least 72 hours before departure, so confirm what your own passport needs before you book anything non-refundable.
Where to stay and what to do in Seoul
Seoul's districts sort themselves cleanly by budget. Hongdae is the affordable, student-heavy nightlife quarter; Myeongdong sits in the middle and puts you inside the main shopping grid; Gangnam and Apgujeong are the luxury end, with the designer streets and the polished hotels.
A first visit almost writes itself: Gyeongbokgung Palace for the scale and the guard-changing ceremony, Bukchon Hanok Village for the traditional lanes between it and Insadong, and N Seoul Tower on Namsan for the view that puts the whole city in context. Then book a Korean BBQ dinner in Mapo-gu, which is the meal most travellers remember longest.
Convenience stores deserve a mention of their own. CU and GS25 serve hot kimbap, ramyeon and rice bowls, and in Seoul that counts as a legitimate dinner rather than a compromise — useful on the nights you get back late. For the full picture of neighbourhoods, transport and eating strategy, read our destination guide at /en/destinations/seoul.
Booking tips for this route
- Install Naver Maps before you fly — Google Maps does not work properly in South Korea, and Naver covers subway, walking and restaurants.
- Pick up a T-money card at any convenience store on arrival; it works on buses, the subway and some taxis.
- Check the K-ETA requirement for your passport early — Vietnamese citizens must apply online at least 72 hours before departure.
- Autumn and cherry blossom season are the peak windows on this route, so book those dates further ahead than usual and compare several departure days.
- Midweek departures often price below weekend ones; tracking the route on Pingsme, which refreshes fares every two hours across 87 airlines, catches the dips without you checking manually.
Content updated: 2026-07-25
Frequently asked questions
What is the best time of year to fly from Bangkok to Seoul?
September to November is the strongest window: autumn foliage, clear skies, comfortable 15–22°C weather and festival season. March to May is the other favourite, with cherry blossom peaking in early April and the city's parks at their best. December to February is cold at -5 to 5°C but brings ski season, winter festivals and the cheapest flights of the year, which makes it the value pick for travellers coming from a tropical climate.
What currency and timezone should I expect in Seoul?
Seoul uses the Korean Won (KRW) and runs on UTC+9, so set your watch forward when you land. The local language is Korean. Two practical points: use Naver Maps rather than Google Maps, which is restricted in South Korea for national security reasons, and buy a T-money card at any convenience store for buses, subways and some taxis.
How do I find a good fare on the Bangkok to Seoul route?
Book early for the peak windows — autumn from September to November and cherry blossom season around early April — and consider December to February if price matters more than warmth, since winter carries the cheapest flights of the year. Compare several departure days rather than one, favour midweek flights, and use Pingsme, which compares 87 airlines and refreshes prices every two hours, to watch the route before committing.
What is the cheapest flight from Bangkok to Seoul right now?
The lowest fare we've collected is $120 with T'way Air, departing 2026-09-22. Fares change quickly — the final price is always confirmed on the airline or partner site.
How often are prices on this page updated?
Automated crawlers refresh fares on this route at least once daily. Each listed deal reflects the most recent collection.
Which airlines does Pingsme compare for Bangkok to Seoul?
Pingsme tracks 87 airlines worldwide and lists every carrier with a collected fare on this route, ranked by price.
Does Pingsme sell tickets?
No — Pingsme is a free price comparator. Clicking a deal takes you to the airline or travel partner to complete the booking; we earn a small affiliate commission at no extra cost to you.
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