AirHint found the following cheapest return flights from Chicago (ORD) to Porto (OPO) in June 2026 (see full year).
Return flights
| 15 Jun - 26 Jun | Air Canada | ||
| 14 Jun - 23 Jun | TAP | ||
| 24 Jun - 29 Jun | Air Canada | ||
| 19 Jun - 26 Jun | TAP | ||
| 11 Jun - 20 Jun | Turkish Airlines | ||
| 22 Jun - 29 Jun | Lufthansa | ||
| 23 Jun - 30 Jun | Air Canada |
Also check the deals for one-way flights from Chicago to Porto in June.
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