Cheapest return flights from Frankfurt to Boston in December from 421€

AirHint found the following cheapest return flights from Frankfurt (FRA) to Boston (BOS) in December 2025 (see full year).

Return flights

05 Dec - 07 Dec TAP
04 Dec - 07 Dec TAP
11 Dec - 14 Dec ITA Airways
23 Dec - 07 Jan Aer Lingus
17 Dec - 05 Jan Aer Lingus
25 Dec - 08 Jan TAP
26 Dec - 10 Jan KLM
25 Dec - 31 Dec SWISS
23 Dec - 10 Jan TAP
26 Dec - 08 Jan Lufthansa
24 Dec - 07 Jan Delta
23 Dec - 09 Jan TAP
10 Dec - 14 Dec Ryanair
23 Dec - 30 Dec United
28 Dec - 17 Jan Ryanair
18 Dec - 31 Dec United
18 Dec - 30 Dec SWISS
26 Dec - 31 Dec British Airways
08 Dec - 27 Dec Air Canada
26 Dec - 01 Jan British Airways

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

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