Cheapest return flights from Boston to Barcelona in May from $361

AirHint found the following cheapest return flights from Boston (BOS) to Barcelona (BCN) in May 2026 (see full year).

Return flights

05 May - 30 May Icelandair
14 May - 19 May Iberia For Level direct
14 May - 20 May Iberia For Level direct
13 May - 19 May Iberia For Level direct
12 May - 06 Jun Iberia For Level direct
12 May - 18 May Iberia For Level direct
05 May - 30 May Iberia For Level direct
19 May - 25 May Scandinavian Airlines
17 May - 24 May Icelandair
19 May - 25 May Iberia For Level direct
18 May - 13 Jun Iberia For Level direct
20 May - 26 May American Airlines
20 May - 13 Jun Austrian Airlines
20 May - 13 Jun Iberia For Level direct

Also check the deals for one-way flights from Boston to Barcelona in May.

Skyscanner

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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