Cheapest return flights from Cincinnati to Porto in May from 700€

Best time to book flights for Cincinnati (CVG) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Cincinnati (CVG) to Porto (OPO) in May 2025 (see full year).

Return flights

05 May - 13 May British Airways
09 May - 15 May Allegiant Air
04 May - 13 May United
13 May - 30 May Frontier Airlines
12 May - 30 May Allegiant Air
20 May - 27 May Frontier Airlines
25 May - 01 Jun United
15 May - 29 May United

Also check the deals for one-way flights from Cincinnati to Porto in May.

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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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