Cheapest return flights from Boston to Frankfurt in December from 526€

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

Return flights

29 Dec - 12 Jan Icelandair
14 Dec - 25 Dec Icelandair
14 Dec - 26 Dec Icelandair
26 Dec - 07 Jan jetBlue
15 Dec - 20 Dec KLM
25 Dec - 06 Jan Icelandair
23 Dec - 06 Jan jetBlue
24 Dec - 06 Jan jetBlue
20 Dec - 11 Jan jetBlue
25 Dec - 31 Dec Condor
29 Dec - 05 Jan TAP
12 Dec - 04 Jan Spirit Airlines
17 Dec - 24 Dec Spirit Airlines
23 Dec - 05 Jan Frontier Airlines
29 Dec - 04 Jan TAP
20 Dec - 29 Dec Allegiant Air
27 Dec - 31 Dec Porter Airlines (Canada) Ltd
21 Dec - 31 Dec Frontier Airlines
14 Dec - 26 Dec Lufthansa direct
15 Dec - 20 Dec Lufthansa direct

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

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