$278 Find Cheap Flights from Washington to Portugal - Compare and Save

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Portugal.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington to Portugal with an airline and back with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

There are 14 airports in Portugal. The busiest airport is Lisbon Portela Airport (LIS), with 59% of all flights arriving there.

The cheapest month for flights from Washington to Portugal is February, when tickets cost $393 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $776 and $743 respectively.

To get a below average price on the flight from Washington to Portugal, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

An average nonstop flight from Washington to Portugal takes 21h 00m, covering a distance of 5013 miles. The shortest route is Portland (PDX) to Porto (OPO) with an average flight time of 13h 35m.

Based on KAYAK flight searches, the most popular destination is Funchal (50% of total searches to Portugal). The next most popular destination is Faro (50%).