AirHint found the following cheapest return flights from Vienna (VIE) to Boston (BOS) in August 2025 (see full year).

Return flights

30 Aug - 06 Sep	KLM
18 Aug - 03 Sep	British Airways
15 Aug - 21 Aug	Condor
27 Aug - 01 Sep	Aer Lingus
23 Aug - 05 Sep	British Airways
14 Aug - 28 Aug	Condor
15 Aug - 19 Aug	Condor
14 Aug - 30 Aug	Condor
08 Aug - 21 Aug	Condor
14 Aug - 16 Aug	Condor
08 Aug - 12 Aug	United
08 Aug - 11 Aug	United
20 Aug - 25 Aug	Iberia
22 Aug - 05 Sep	Condor
25 Aug - 27 Sep	KLM
17 Aug - 24 Aug	Condor

Also check the deals for one-way flights from Vienna to Boston 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 Vienna to Boston in August from 499€

Return flights