What’s the cost of a flight from Washington Dulles to Porto?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Washington and Porto.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Which airports serve Washington and Porto?

When planning a trip of about 3540 mi, it's a good idea to check flights from surrounding airports too.

• Airports in Washington: Washington is connected to 3 airports - Dulles international, Ronald Reagan, Washington International.
• Airports in Porto: The only active airport in Porto is Porto.

The closest airport isn’t always the cheapest — it’s worth checking the alternatives too. In some cities, smaller airports offer lower fares than the main ones.

Explore flights from Washington Dulles to Porto your way

On Jetcost, you can filter by round-trip or one-way, time of day, airline, number of stops, and even by agency like eDreams or Expedia. Options include Delta, United, American, and more.

Other popular destinations

Also interested in Portugal? Check out: Faro, Funchal, Lisbon, Ponta Delgada, Porto.

If you’re flexible with dates, try checking the days before and after to see if prices vary. Some routes are offered by multiple agencies — comparing fares can really pay off.