SEA → BCNSeattle to Barcelona

live

Direct flights from Seattle (SEA) to Barcelona (BCN): 9 nonstop departures observed each week across 3 airlines. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 34 minutes early. No cancellations were recorded across the 7 tracked flights. The nonstop covers 8,730 km, an estimated 11 hours 42 minutes in the air. Measured by Pro Flight Search from live flight boards at Seattle and Barcelona. Updated 19 September 2026 at 12:23 UTC.

SEA Seattle smooth · +13
BCN Barcelona smooth · +0
8,730 km · ~11h 42m est.
dep bank 11:10–15:359x weekly
Runs reliable · 3 airlines · 9x weekly · nonstop
100% on time

of the last 7 operated SEA → BCN flights arrived within 15 minutes

Median arrival delay is −34 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−34 minacross the last 7 operated legs
Flight time~11h 42mestimated from route distance
Weekly departures9x3 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air FranceDelta Air LinesKLM

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Air FranceAF

Flights AF3577 11:10 We Fr Su

Delta Air LinesDL

Flights DL248 15:35 Tu Th Sa

KLMKL

Flights KL8211 11:10 We Fr Su

History

operated legs · board outcomes
09-18AF3577arrived+7
09-18KL8211arrived+7
09-17DL248arrived+7
09-16AF3577arrived−40
09-16KL8211arrived−40
09-15DL248arrived−40
09-13AF3577arrived−34

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
SEASeattle +13 min smooth 🌤 few clouds · S 3 kt Full SEA delay board →
BCNBarcelona +0 min smooth 🌤 scattered clouds · S 8 kt Full BCN delay board →

Weather lens

Current conditions put the pressure at BCN: 40% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Seattle to Barcelona route actually runs

Pro Flight Search records official board updates for nonstop SEA to BCN flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Seattle (SEA) to Barcelona (BCN) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/SEA-BCN
How we measure this →

SEA to BCN questions

Is SEA–BCN running on time right now?

Smooth skies ahead. The departure side at SEA is the weaker end, route health score 91/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from SEA to BCN?

Great-circle distance is 8,730 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 646–778 min gate-to-gate on this route.

How often does SEA–BCN fly?

3 carriers operate this route, around 9 flights a week between them. Compare carrier days and times in the airline list above.

What does the route health score measure?

A blend of departure-side delay at SEA and arrival-side delay at BCN, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.