August is the cheapest month to fly this route, with average fares around $1078 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1275 | $842 | ||
| June 2026 | $1358 | $1097 | Peak | |
| July 2026 | $1097 | $842 | ||
| August 2026 | $1078 | $1012 | Best |
Departing on Wednesday offers the lowest average fares at $1121. Thursday departures are the most expensive at $1364, a difference of $243.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from San Francisco to Seoul is August, with average round-trip fares around $1078. The lowest fare found in August is $1012.
Wednesday departures are the cheapest, averaging $1121 round trip. The most expensive day is Thursday at $1364.
Based on current pricing trends, booking for August travel offers the best value. Avoid June if possible, as fares average $1358 compared to $1078 in the cheapest month. May is a solid middle-ground option at $1275.
Flying in August instead of June can save you approximately $280 per round trip. The cheapest month averages $1078 while the most expensive averages $1358.
Airlines, flight times, price calendar, and more for San Francisco to Seoul
View SFO → ICN Details