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

Return flights

31 Mar - 14 Apr	SWISS
30 Mar - 13 Apr	TAP
10 Mar - 17 Mar	Aer Lingus
11 Mar - 25 Mar	Icelandair
20 Mar - 25 Mar	Icelandair
03 Mar - 10 Mar	Icelandair
11 Mar - 18 Mar	Icelandair
08 Mar - 17 Mar	Icelandair
24 Mar - 31 Mar	Austrian Airlines
08 Mar - 18 Mar	Icelandair
02 Mar - 07 Mar	Icelandair
19 Mar - 24 Mar	Icelandair
24 Mar - 03 Apr	TAP
25 Mar - 10 Apr	Aer Lingus
25 Mar - 01 Apr	Icelandair
29 Mar - 05 Apr	Icelandair
31 Mar - 07 Apr	Lufthansa
27 Mar - 03 Apr	Icelandair
25 Mar - 10 Apr	Lufthansa	direct
27 Mar - 03 Apr	Lufthansa	direct

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

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 March from 442€

Return flights