AirHint found the following cheapest one-way flights from Boston (BOS) to Singapore (SIN) in January 2026 (see full year).
One-Way flights
| 26 Jan | Delta | ||
| 22 Jan | Cathay Pacific | ||
| 27 Jan | Cathay Pacific | ||
| 23 Jan | Cathay Pacific | ||
| 18 Jan | Cathay Pacific |
Also check the deals for return flights from Boston to Singapore in January.
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