AirHint found the following cheapest one-way flights from Seoul (ICN) to San Francisco (SFO) in May 2026 (see full year).
One-Way flights
| 26 May | Zipair | ||
| 25 May | Peach | ||
| 29 May | Zipair | ||
| 20 May | Eastar Jet | ||
| 22 May | Zipair | ||
| 21 May | T'way Air | ||
| 23 May | Jeju Air | ||
| 30 May | Air Premia | direct | |
| 23 May | Air Premia | direct | |
| 31 May | Air Premia | direct |
Also check the deals for return flights from Seoul to San Francisco in May.
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