AirHint found the following cheapest return flights from Houston (HOU) to Hanoi (HAN) in March 2026 (see full year).
Return flights
| 16 Mar - 30 Mar | Frontier Airlines | ||
| 09 Mar - 30 Mar | Frontier Airlines | ||
| 08 Mar - 29 Mar | Frontier Airlines | ||
| 18 Mar - 30 Mar | Delta | ||
| 05 Mar - 13 Mar | Frontier Airlines |
Also check the deals for one-way flights from Houston to Hanoi in March.
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