AirHint found the following cheapest return flights from Kathmandu (KTM) to Hanoi (HAN) in May 2026 (see full year).
Return flights
| 21 May - 28 May | IndiGo | ||
| 04 May - 08 May | IndiGo | ||
| 19 May - 29 May | IndiGo | ||
| 15 May - 29 May | IndiGo | ||
| 11 May - 18 May | IndiGo |
Also check the deals for one-way flights from Kathmandu to Hanoi in May.
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