May is the cheapest month to fly this route, with average fares around $360 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $360 | $333 | Best | |
| June 2026 | $365 | $336 | ||
| July 2026 | $369 | $342 | ||
| August 2026 | $391 | $374 | Peak |
Departing on Sunday offers the lowest average fares at $361. Saturday departures are the most expensive at $381, a difference of $20.
The best time to fly is May. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Bangkok to Seoul is May, with average round-trip fares around $360. The lowest fare found in May is $333.
Sunday departures are the cheapest, averaging $361 round trip. The most expensive day is Saturday at $381.
Based on current pricing trends, booking for May travel offers the best value. Avoid August if possible, as fares average $391 compared to $360 in the cheapest month. July is a solid middle-ground option at $369.
Flying in May instead of August can save you approximately $31 per round trip. The cheapest month averages $360 while the most expensive averages $391.
Airlines, flight times, price calendar, and more for Bangkok to Seoul
View BKK → ICN Details