AirHint found the following cheapest one-way flights from Boston (BOS) to Porto (OPO) in May 2026 (see full year).
One-Way flights
| 04 May | KLM | ||
| 03 May | KLM | ||
| 05 May | KLM | ||
| 06 May | KLM | ||
| 09 May | Iberia | ||
| 01 May | KLM | ||
| 27 May | Iberia | ||
| 28 May | Iberia | ||
| 30 May | LEVEL | ||
| 31 May | Porter Airlines (Canada) Ltd |
Also check the deals for return flights from Boston to Porto in May.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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