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

Return flights

21 May - 26 May	Condor	direct
04 May - 10 May	TAP
15 May - 28 May	Condor	direct
14 May - 21 May	Condor	direct
11 May - 24 May	Condor	direct
25 May - 05 Jun	Condor	direct
13 May - 17 May	British Airways
22 May - 06 Jun	Aer Lingus
14 May - 30 May	KLM
01 May - 30 Jun	Aer Lingus
26 May - 30 May	Condor
30 May - 13 Jun	KLM
23 May - 06 Jun	SWISS

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

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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Cheapest return flights from Frankfurt to Boston in May from 370€

Return flights