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

Return flights

25 Jul - 28 Aug	Icelandair
20 Jul - 28 Jul	Air Canada
13 Jul - 17 Jul	SWISS
16 Jul - 30 Jul	Air Canada
06 Jul - 16 Jul	Condor	direct
05 Jul - 16 Jul	Condor	direct
10 Jul - 20 Jul	Condor	direct
09 Jul - 14 Jul	SWISS
25 Jul - 28 Aug	Condor	direct
07 Jul - 16 Jul	Condor	direct
05 Jul - 25 Jul	Condor	direct
05 Jul - 26 Jul	Condor	direct
26 Jul - 09 Aug	Condor	direct
28 Jul - 08 Aug	Condor	direct
30 Jul - 06 Aug	Icelandair
20 Jul - 03 Aug	Condor	direct
30 Jul - 06 Aug	Lufthansa	direct
28 Jul - 04 Aug	Lufthansa	direct
26 Jul - 02 Aug	Lufthansa

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

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.

Book a cheap hotel in Frankfurt

Cheap car rent in Frankfurt

Cheapest return flights from Boston to Frankfurt in July from $413

Return flights