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

Return flights

01 Oct - 08 Oct	Iberia
01 Oct - 06 Oct	Iberia
26 Oct - 09 Nov	Icelandair
29 Oct - 05 Nov	Icelandair
23 Oct - 06 Nov	Icelandair
28 Oct - 04 Nov	Icelandair
02 Oct - 07 Oct	Iberia
03 Oct - 10 Oct	TAP
08 Oct - 15 Oct	Icelandair
13 Oct - 20 Oct	Icelandair
23 Oct - 30 Oct	Icelandair
28 Oct - 04 Nov	Lufthansa	direct
29 Oct - 05 Nov	Lufthansa	direct
18 Oct - 25 Oct	Icelandair
02 Oct - 07 Oct	Condor	direct
23 Oct - 06 Nov	Lufthansa	direct
26 Oct - 09 Nov	Lufthansa	direct
08 Oct - 15 Oct	Lufthansa	direct

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

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 October from $432

Return flights