August is the cheapest month to fly this route, with average fares around $1286 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1740 | $1503 | Peak | |
| June 2026 | $1673 | $1556 | ||
| July 2026 | $1502 | $1335 | ||
| August 2026 | $1286 | $1213 | Best |
Departing on Tuesday offers the lowest average fares at $1508. Friday departures are the most expensive at $1654, a difference of $146.
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 Dallas to Seoul is August, with average round-trip fares around $1286. The lowest fare found in August is $1213.
Tuesday departures are the cheapest, averaging $1508 round trip. The most expensive day is Friday at $1654.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $1740 compared to $1286 in the cheapest month. June is a solid middle-ground option at $1673.
Flying in August instead of May can save you approximately $454 per round trip. The cheapest month averages $1286 while the most expensive averages $1740.
Airlines, flight times, price calendar, and more for Dallas to Seoul
View DFW → ICN Details