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

Return flights

14 Jan - 28 Jan	Aer Lingus
17 Jan - 31 Jan	Aer Lingus
05 Jan - 12 Jan	Icelandair
15 Jan - 22 Jan	Icelandair
07 Jan - 18 Jan	Icelandair
02 Jan - 14 Jan	Icelandair
10 Jan - 18 Jan	Air France
10 Jan - 17 Jan	Icelandair
25 Jan - 01 Feb	Icelandair
14 Jan - 28 Jan	Lufthansa	direct
02 Jan - 14 Jan	Lufthansa	direct
25 Jan - 01 Feb	Lufthansa	direct

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

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 Boston to Frankfurt in January from $468

Return flights