Cheapest one-way flights from Boston to Barcelona in May from 289€

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

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

One-Way flights

13 May Spirit Airlines
05 May Spirit Airlines
12 May Spirit Airlines
21 May Spirit Airlines
18 May Spirit Airlines
09 May Fly Play
08 May Spirit Airlines
28 May Fly Play
01 May Spirit Airlines
02 May Fly Play

Also check the deals for return 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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