Seattle to Barcelona
Seattle to Barcelona is cheapest in October. September, the most expensive month we measured, costs about 538 € more.
Seattle to Barcelona is 8,730 km flown direct. Every fare we measured came from WS.
That comes from pricing 262 departure dates across 11 months. Every figure below is a fare we measured on the day shown, not a live quote. When we have nothing fresh to say about a route, its page stops existing.
What is a good price from Seattle to Barcelona?
Anything at or below the quarter mark beats three in four of the 262 one-way fares we measured here. Above the median, wait or move the date.
seen 26 Sep 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 219 and 277 days before departure, noticeably further out than the rest of the market. If you can look a few months ahead, that is where the cheap seats are sitting.
a snapshot of where the cheap seats sat, seen 26 Sep 2026
Which day of the week is cheapest?
On average, Friday departures came out lowest and Sunday highest, a spread of about 234 €. The day matters less than the month here: pick the month first, then the day.