AirHint found the following cheapest return flights from Porto (OPO) to Hanoi (HAN) in May 2026 (see full year).
Return flights
| 30 May - 17 Jun | Iberia | ||
| 30 May - 13 Jun | Air Europa | ||
| 22 May - 25 May | Ryanair | ||
| 10 May - 31 May | Ryanair | ||
| 30 May - 16 Jun | Air Europa |
Also check the deals for one-way flights from Porto to Hanoi in May.
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