AirHint found the following cheapest return flights from Boston (BOS) to Seoul (ICN) in October 2026 (see full year).
Return flights
| 09 Oct - 04 Nov | SWISS | ||
| 10 Oct - 17 Oct | Air Canada | ||
| 09 Oct - 17 Oct | Air Canada | ||
| 09 Oct - 04 Nov | Delta | direct | |
| 10 Oct - 17 Oct | Delta | direct | |
| 09 Oct - 17 Oct | Delta | direct |
Also check the deals for one-way flights from Boston to Seoul in October.
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