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Cheapest one-way flights from Chicago (ORD) to Porto (OPO), August

Select a price to book. see full year.

Dates, airline, and price
Dates	Airline	Price
16 Aug	United
18 Aug	United
19 Aug	United
26 Aug	United
15 Aug	Air Canada
02 Aug	TAP
05 Aug	TAP
09 Aug	TAP
12 Aug	TAP
06 Aug	TAP

deals for return flights from Chicago to Porto in August.

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Updated Jul 19, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Chicago (ORD) to Porto (OPO), August

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