July is the cheapest month to fly this route, with average fares around $1546 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $1550 | $1402 | ||
| June 2026 | $1607 | $1376 | ||
| July 2026 | $1546 | $1407 | Best | |
| August 2026 | $1618 | $1527 | Peak |
Departing on Monday offers the lowest average fares at $1532. Sunday departures are the most expensive at $1595, a difference of $63.
The best time to fly is July. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Chicago to Seoul is July, with average round-trip fares around $1546. The lowest fare found in July is $1407.
Monday departures are the cheapest, averaging $1532 round trip. The most expensive day is Sunday at $1595.
Based on current pricing trends, booking for July travel offers the best value. Avoid August if possible, as fares average $1618 compared to $1546 in the cheapest month. June is a solid middle-ground option at $1607.
Flying in July instead of August can save you approximately $72 per round trip. The cheapest month averages $1546 while the most expensive averages $1618.
Airlines, flight times, price calendar, and more for Chicago to Seoul
View ORD → ICN Details