AirHint found the following cheapest return flights from San Francisco (SFO) to Hanoi (HAN) in May 2026 (see full year).
Return flights
| 15 May - 17 Jun | Korean Air | ||
| 17 May - 14 Jun | Korean Air | ||
| 26 May - 23 Jun | Asiana Airlines | ||
| 31 May - 17 Jun | WestJet | ||
| 31 May - 28 Jun | WestJet | ||
| 29 May - 14 Jun | WestJet | ||
| 30 May - 17 Jun | Vietnam Airlines |
Also check the deals for one-way flights from San Francisco to Hanoi in May.
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