Cheap flights from Seattle to Barcelona from $206

The month of October is, on average, the cheapest month to fly to Barcelona from Seattle, with most prices found around $330. If you don’t want to visit Barcelona in October, then you should wait until December to fly from Seattle, when ticket prices are also cheap, with an average price of $352.

The cheapest day to depart from Seattle to Barcelona is on a Friday when prices can be found for as low as $920. On the other hand, Saturday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,208.

Fly from Seattle/Tacoma Intl to Barcelona-El Prat for the best Seattle/Tacoma Intl - Barcelona flight prices

You are more likely to see cheaper flights to Barcelona from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona for around $787 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona from Seattle for as low as $735 on momondo.

British Airways, KLM, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Barcelona

Condor, Delta and Icelandair are the top three most popular airlines that fly to Barcelona from Seattle according to our data. Condor is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Barcelona. Keep in mind that there are 13 different airlines that fly to Barcelona on a routine basis, so you have a few additional options to choose from.

Historically, on average around 6% of flights between Seattle and Barcelona have experienced a delay on any given week. The average delay length over the past 12 months has been 153 minutes.

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

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

The number of flights available between Seattle and Barcelona is 1 per day as of July 2026. The most frequent departure time is 3:00PM, with 100% of daily flights leaving in the afternoon.

9 flights are operational weekly from Seattle to Barcelona as of July 2026. The most popular departure day for this route is Tue, with 33% of flights per week taking off on this day.