AirHint found the following cheapest one-way flights from Omaha (OMA) to Porto (OPO) in May 2026 (see full year).
One-Way flights
| 20 May | Iberia | ||
| 21 May | Iberia | ||
| 22 May | Allegiant Air |
Also check the deals for return flights from Omaha to Porto in May.
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