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

Return flights

05 May - 16 May	TAP
04 May - 30 May	Turkish Airlines
08 May - 16 May	TAP
12 May - 06 Jun	Iberia
02 May - 23 May	TAP
11 May - 06 Jun	TAP
13 May - 06 Jun	Iberia
14 May - 06 Jun	Iberia
20 May - 13 Jun	Condor
04 May - 30 May	Austrian Airlines	direct
13 May - 06 Jun	Austrian Airlines	direct
11 May - 06 Jun	Austrian Airlines	direct
08 May - 16 May	Austrian Airlines	direct
02 May - 23 May	United	direct
20 May - 13 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 509€

Return flights