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

Return flights

27 Apr - 11 May	TAP
30 Apr - 14 May	TAP
23 Apr - 30 Apr	Icelandair
13 Apr - 18 Apr	TAP
08 Apr - 15 Apr	Icelandair
14 Apr - 21 Apr	Icelandair
20 Apr - 27 Apr	Icelandair
07 Apr - 14 Apr	Icelandair
12 Apr - 19 Apr	Icelandair
13 Apr - 20 Apr	Icelandair
22 Apr - 29 Apr	Icelandair
26 Apr - 03 May	Icelandair
24 Apr - 01 May	Icelandair
25 Apr - 02 May	Icelandair
27 Apr - 04 May	Icelandair
28 Apr - 05 May	Icelandair
29 Apr - 06 May	Icelandair
30 Apr - 07 May	Icelandair
09 Apr - 16 Apr	Icelandair

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

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 April from $413

Return flights