Cheapest return FRA–BOS flights, May

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

Return flights

11 May - 25 May Condor direct
19 May - 26 May Condor direct
14 May - 26 May Condor direct
14 May - 25 May Condor direct
20 May - 08 Jun Ryanair
16 May - 23 May Aer Lingus
19 May - 27 May Aer Lingus
29 May - 31 May Aer Lingus
27 May - 14 Jun Aer Lingus
20 May - 07 Jun Ryanair
21 May - 03 Jun Condor direct
15 May - 28 May Condor direct
21 May - 28 May Condor direct
18 May - 22 May Condor direct
18 May - 01 Jun KLM
20 May - 03 Jun KLM
26 May - 02 Jun British Airways
13 May - 04 Jun Delta
19 May - 02 Jun KLM
04 May - 24 Jun Air Canada

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

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