AirHint found the following cheapest return flights from Houston (HOU) to Frankfurt (FRA) in August 2025 (see full year).

Return flights

04 Aug - 20 Aug	Lufthansa	direct
09 Aug - 22 Aug	Air Canada
04 Aug - 18 Aug	Lufthansa
25 Aug - 17 Sep	Lufthansa	direct
18 Aug - 01 Sep	Air Canada
09 Aug - 22 Aug	Lufthansa	direct
07 Aug - 21 Aug	Lufthansa	direct
18 Aug - 31 Aug	United
18 Aug - 01 Sep	United	direct
15 Aug - 15 Sep	Lufthansa
15 Aug - 15 Sep	Lufthansa	direct
18 Aug - 31 Aug	Lufthansa	direct
04 Aug - 18 Aug	Lufthansa	direct

Also check the deals for one-way flights from Houston to Frankfurt in August.

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 Houston to Frankfurt in August from $641

Return flights