Cheap flights from Portugal to Seattle from $331

In general, April is the cheapest month to fly from Portugal to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $815. If you don’t want to visit Seattle in April, then you should wait until February to fly from Portugal, when ticket prices are also cheap, with an average price of $825.

You are more likely to see cheaper flights to Seattle from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $973 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Portugal for as low as $825 on momondo.

British Airways, American Airlines, and Finnair are the most popular carriers operating from Portugal to Seattle/Tacoma Intl

Delta, Air France and British Airways are the top three most popular airlines that fly to Seattle from Portugal according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Historically, on average around 50% of flights between Portugal and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 108 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.