Chennai to Seoul at a glance
The lowest fare our scanner has seen from Chennai to Seoul in the last two weeks is ₹49,465 (return, 8 nights) for Sun 21 Mar, about 38% over the usual price.
Of the months we have prices for, March is the cheapest and October the dearest.
The cheapest fares we see stop on the way, usually in Bangkok, Kuala Lumpur and Hong Kong, and take from 9h 30m.
Seoul has its best weather from April to May and September to October.
Common stops: Bangkok, Kuala Lumpur, Hong KongCheapest airlines lately: THAI, Cathay Pacific, AirAsia, Scoot
Month by month: fares, weather and what's on
The cheapest fare our scanner has seen in each month over the last two weeks (return, 8 nights), with Seoul's weather and the dates that move prices. The live calendar at the top prices any month and trip length on demand.
| Month | Cheapest fare seen | Weather | Season | What's on |
|---|---|---|---|---|
| October 2026Best weather | ₹66,968 return, 8 nights · Sun 18 Oct | 18° / 13°some rain, 79 mm | Peak | China Golden WeekDussehra |
| November 2026 | ₹64,963 return, 8 nights · Mon 9 Nov | 12° / 6°some rain, 52 mm | Shoulder | Diwali |
| December 2026 | ₹56,494 return, 8 nights · Tue 1 Dec | 4° / -2°mostly dry, 31 mm | Shoulder | Christmas and New Year |
| January 2027 | ₹64,963 return, 8 nights · Thu 14 Jan | 2° / -3°dry, 22 mm | Off-season | Christmas and New YearRepublic Day weekend |
| February 2027 | ₹58,951 return, 8 nights · Sat 27 Feb | 3° / -2°mostly dry, 25 mm | Off-season | Seollal |
| March 2027 | ₹49,465 return, 8 nights · Sun 21 Mar | 7° / 3°mostly dry, 42 mm | Shoulder | HoliGood Friday weekend |
| April 2027Best weather | Check live above | 12° / 8°some rain, 65 mm | Peak | Indian summer holidays |
| May 2027Best weather | Check live above | 17° / 13°rainy spells, 108 mm | Peak | Indian summer holidays |
| June 2027 | Check live above | 22° / 18°rainy spells, 109 mm | Shoulder | Indian summer holidays |
| July 2027 | Check live above | 26° / 23°very wet, 273 mm | Shoulder | Monsoon (jangma), roughly late June to late July: heavy rain and humidity. |
| August 2027 | Check live above | 28° / 24°wet, 241 mm | Shoulder | Hot, humid summer, around 30°C. |
| September 2027Best weather | Check live above | 24° / 20°wet, 153 mm | Shoulder | Chuseok |
Dates to plan around
Festivals and holidays in Seoul, and the rushes that push up fares out of Chennai.
- 1–7 OctChina Golden WeekChina's National Day holiday: mainland travellers pack Hong Kong, Macau and the big Asian hotspots, and hotel prices rise.
- 20 OctDussehraDussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week.
- 6–10 NovDiwaliDiwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up.
- 19 Dec – 3 JanChristmas and New YearThe priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.
- 23–26 JanRepublic Day weekendRepublic Day falls on Tuesday 26 Jan: take the Monday off and it's a four-day weekend, so short trips abroad book up.
- 6–9 FebSeollalKorean Lunar New Year (holidays 6-9 Feb): people travel home, trains sell out and some shops close.
- 22–23 MarHoliHoli (22-23 Mar) and Good Friday (26 Mar) fall in the same week, a favourite week for short trips abroad, so fares rise.
- 26–28 MarGood Friday weekendGood Friday (26 Mar) makes a long weekend in India, just after Holi.
- 15 Apr – 15 Jun · expectedIndian summer holidaysSchool holidays (roughly mid-April to mid-June, varying by state): outbound family travel peaks and fares climb, especially to the Gulf, Southeast Asia and Europe.
- 14–16 SepChuseokKorea's harvest festival: people travel home, trains sell out and some shops close.
Good to know
What is the cheapest month to fly from Chennai to Seoul?
Of the months our scanner has priced, March 2027 is the cheapest: ₹49,465 (return, 8 nights) for Sun 21 Mar. Fares change daily; the live calendar at the top of this page prices every month on demand.
How long is the flight from Chennai to Seoul?
Among the cheapest fares we see, the quickest takes about 9h 30m with a stop.
Which airlines fly from Chennai to Seoul?
Recently the cheapest fares were on THAI, Cathay Pacific, AirAsia, Scoot and Malaysia Airlines.
When is the best time to visit Seoul?
The best weather in Seoul is from April to May and September to October. Cherry blossoms in early April along Yeouido and Seokchon Lake. Peak season, with the most visitors and the highest hotel prices, is April to May and October. The quietest months are January to February.
How far ahead should I book Chennai to Seoul flights?
At least five weeks ahead. Recently, on East Asia routes, fares 3-5 weeks before departure ran 10% above what the same flights cost five to seventeen weeks out.
When do fares out of Chennai go up?
Dussehra (20 Oct): Dussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week. Diwali (6–10 Nov): Diwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up. Christmas and New Year (19 Dec – 3 Jan): The priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.