Cheapest one-way flights from Washington to Porto in April from $337
AirHint found the following cheapest one-way flights from Washington (IAD) to Porto (OPO) in April 2025 (see full year).
One-Way flights
| 08 Apr | Frontier Airlines | ||
| 25 Apr | Icelandair | ||
| 28 Apr | Icelandair | ||
| 30 Apr | Icelandair | ||
| 29 Apr | Icelandair | ||
| 27 Apr | TAP | ||
| 26 Apr | Icelandair | ||
| 04 Apr | TAP | ||
| 16 Apr | Air France | ||
| 21 Apr | Delta |
Also check the deals for return flights from Washington to Porto in April.
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.
