AirHint found the following cheapest return flights from Boston (BOS) to Seoul (ICN) in November 2025 (see full year).

Return flights

08 Nov - 11 Nov	Air Canada
15 Nov - 29 Nov	Air Canada
11 Nov - 08 Dec	United
18 Nov - 17 Dec	United
18 Nov - 10 Dec	United
13 Nov - 09 Dec	United
11 Nov - 03 Dec	United
12 Nov - 10 Dec	United
26 Nov - 30 Nov	Air France
11 Nov - 08 Dec	Delta	direct
18 Nov - 17 Dec	Delta	direct
18 Nov - 10 Dec	Delta	direct
13 Nov - 09 Dec	Delta	direct
15 Nov - 29 Nov	Korean Air	direct
08 Nov - 11 Nov	Delta	direct
26 Nov - 30 Nov	Delta	direct

Also check the deals for one-way flights from Boston to Seoul in November.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Boston to Seoul in November from 853€

Return flights