Cheapest return BOS–BCN flights, May

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

Return flights

11 May - 15 May Condor
14 May - 21 May KLM
11 May - 16 May KLM
25 May - 03 Jun Iberia
27 May - 03 Jun Iberia
18 May - 22 May Condor
19 May - 22 May Condor
24 May - 03 Jun Iberia
24 May - 27 May Iberia
31 May - 03 Jun Iberia
13 May - 20 May Lufthansa
23 May - 26 May LEVEL direct
25 May - 15 Jun Condor
25 May - 03 Jun Air France direct
29 May - 08 Jun Delta direct
24 May - 03 Jun Air France direct
16 May - 19 May Iberia direct
04 May - 12 May SWISS
30 May - 09 Jun Air France
28 May - 02 Jun Air France

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

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