AirHint found the following cheapest return flights from San Diego (SAN) to Hanoi (HAN) in January 2026 (see full year).
Return flights
| 14 Jan - 28 Jan | ANA | ||
| 13 Jan - 29 Jan | ANA | ||
| 01 Jan - 31 Jan | Delta | ||
| 25 Jan - 10 Feb | Japan Airlines |
Also check the deals for one-way flights from San Diego to Hanoi in January.
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