AirHint found the following cheapest return flights from Boston (BOS) to Vienna (VIE) in May 2026 (see full year).

Return flights

19 May - 29 May	Condor
19 May - 26 May	Condor
19 May - 02 Jun	Condor
05 May - 15 May	Scandinavian Airlines
26 May - 02 Jun	Condor
19 May - 16 Jun	Condor
05 May - 15 May	Austrian Airlines	direct
27 May - 03 Jun	Condor
25 May - 01 Jun	Aer Lingus
20 May - 06 Jun	TAP
19 May - 01 Jun	Condor
19 May - 29 May	Austrian Airlines	direct
19 May - 01 Jun	Austrian Airlines	direct

Also check the deals for one-way flights from Boston to Vienna in May.

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 Vienna in May from 317€

Return flights