AirHint found the following cheapest one-way flights from Boston (BOS) to Barcelona (BCN) in May 2026 (see full year).
One-Way flights
| 30 May | LEVEL | direct | |
| 10 May | Icelandair | ||
| 29 May | Air France | direct | |
| 24 May | Air France | direct | |
| 04 May | TAP | ||
| 09 May | SWISS | ||
| 08 May | SWISS | ||
| 13 May | Lufthansa | ||
| 14 May | SWISS | ||
| 22 May | SWISS |
Also check the deals for return flights from Boston to Barcelona 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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