Cheapest return flights from Boston to Barcelona in May from 313€

Best time to book flights for Boston (BOS) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Barcelona (BCN) in May 2025 (see full year).

Return flights

05 May - 12 May TAP
07 May - 14 May TAP
01 May - 08 May TAP
06 May - 13 May TAP
04 May - 11 May TAP
06 May - 12 May LEVEL direct
09 May - 16 May TAP
01 May - 12 May LEVEL direct
07 May - 12 May LEVEL direct
06 May - 20 May LEVEL direct
20 May - 04 Jun LEVEL direct
15 May - 04 Jun LEVEL direct
21 May - 04 Jun LEVEL direct
18 May - 04 Jun LEVEL direct
16 May - 04 Jun LEVEL direct
25 May - 01 Jun Fly Play
20 May - 10 Jun LEVEL direct
15 May - 06 Jun Fly Play
21 May - 10 Jun LEVEL direct
20 May - 06 Jun LEVEL direct

Also check the deals for one-way 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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