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Cheap flights from Seattle to Barcelona-El Prat Airport from £237

SEA — BCN
23 Oct — 30 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Barcelona-El Prat

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Barcelona-El Prat

Sun 11/1017:40 -
1 stop19h 30m
Tue 13/1010:25 -
1 stop14h 15m
Deal found 18/9£547
Sun 18/1011:20 -
2 stops25h 50m
Sun 25/1006:45 -
1 stop16h 10m
Deal found 18/9£554
Sun 11/1019:00 -
1 stop34h 45m
Fri 16/1015:45 -
1 stop13h 55m
Deal found 18/9£585
Sun 11/1019:00 -
1 stop34h 45m
Mon 19/1015:45 -
1 stop35h 10m
Deal found 18/9£586
Tue 6/1011:20 -
2 stops25h 50m
Wed 21/1008:00 -
1 stop16h 40m
Deal found 20/9£591
Sun 18/1013:28 -
2 stops23h 42m
Sun 1/1107:00 -
1 stop15h 55m
Deal found 18/9£606
Mon 2/1120:05 -
1 stop18h 45m
Wed 18/1105:55 -
1 stop20h 15m
Deal found 22/9£621
Sat 14/1114:35 -
1 stop14h 05m
Thu 3/1214:45 -
1 stop35h 15m
Deal found 19/9£626
Wed 21/1010:07 -
2 stops27h 03m
Tue 27/1010:20 -
1 stop14h 35m
Deal found 20/9£629
Mon 12/1018:10 -
1 stop19h 00m
Thu 15/1010:15 -
1 stop14h 45m
Deal found 18/9£642
Sat 10/1020:45 -
2 stops34h 15m
Tue 13/1010:25 -
1 stop14h 15m
Deal found 19/9£645
Fri 30/1020:05 -
1 stop30h 50m
Fri 6/1106:30 -
1 stop20h 40m
Deal found 22/9£651

Find flight deals from Seattle to Barcelona-El Prat

Round-trip from

£547

One-way from

£237

Popular in

June

Cheapest in

January

Average price

£632
Condor
  • Condor
  • 11/10-13/10
  • 2 total stops
  • 33h 45m total
  • Seattle to Barcelona
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12/11-31/12
  • 12/11-31/12
  • 2 total stops
  • 24h 30m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£97 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Barcelona-El Prat Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sun 15/11

18:45-11:25

1 stop31h 40m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£341

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sat 17/10

12:00-09:00

3 stops36h 00m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£351

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sat 17/10

15:20-11:10

Nonstop10h 50m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£381

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sat 17/10

15:20-11:10

Nonstop10h 50m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£381
Fastest return journey

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Thu 22/10

15:30-11:10

Nonstop10h 40m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£381

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sun 21/3

14:50-12:10

1 stop13h 20m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£416

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Mon 16/11

18:45-22:30

1 stop18h 45m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£490

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Tue 24/11

13:30-14:40

1 stop16h 10m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£490

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Wed 18/11

18:45-22:30

1 stop18h 45m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£490

SeattleBarcelona

SEA Seattle/Tacoma Intl - BCN Barcelona-El Prat

SEABCN

Seattle/Tacoma Intl

Sun 22/11

23:15-08:20

1 stop24h 05m

Barcelona-El Prat

Wed 31/12

00:00-15:00

Nonstop0h 00m

£495

Flights are sorted by cheapest return flights first.

Deals found on 19/9

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Seattle with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Barcelona-El Prat Airport

How far ahead should I book a flight from Seattle to Barcelona-El Prat Airport?

The price you pay for your flight from Seattle to Barcelona-El Prat Airport may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Barcelona-El Prat Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of £317). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of £890). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BCN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Barcelona-El Prat Airport as you normally would.

How much does it cost for a return flight from Seattle to Barcelona-El Prat Airport?

Airfare is typical for this route at the moment.

Seattle to Barcelona-El Prat Airport flights typically cost between £486 and £805 in October.
The cheapest return price found within the last 5 days was £547 on Condor (11 Oct–13 Oct).

Related info for your journey

  • What airport do you fly from for flights from Seattle to Barcelona-El Prat?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Barcelona-El Prat. You should not have trouble finding flights to Barcelona-El Prat from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Seattle airport to Barcelona-El Prat. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Barcelona-El Prat Airport?

    Airlines like Turkish Airlines, Delta, and KLM fly from Seattle to Barcelona-El Prat Airport in about 12h 55m. The time it takes to get you to your destination can typically vary by up to 17h 55m. The distance between Seattle and Barcelona-El Prat Airport is about 5421 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Seattle to Barcelona-El Prat Airport?

    No one likes to see their flight delayed. When booking a flight from Seattle to Barcelona-El Prat Airport consider choosing KLM (76%), Air France (76%) or Delta (76%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Seattle to Barcelona-El Prat that include hotel bookings?

    Yes. In addition to deals on Seattle to Barcelona-El Prat flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Barcelona-El Prat?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Barcelona-El Prat.

  • Can I find deals for business class flights from Seattle to Barcelona-El Prat?

    Yes. Cheapflights offers flight deals from Seattle to Barcelona-El Prat by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Barcelona-El Prat Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of £317). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of £890). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
L'Hospitalet de Llobregat
Castelldefels
El Prat de Llobregat
Badalona
Cambrils
Palafrugell
Calella
Santa Susanna
Tossa de Mar
Empuriabrava
Pineda de Mar
Cadaques
L'Estartit
La Pineda
Malgrat de Mar

Browse thousands of different options on Cheapflights for your next trip

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When you search for this flight from Seattle to Barcelona-El Prat, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Barcelona-El Prat?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Barcelona-El Prat from Seattle.

Can Cheapflights find flights from Seattle to Barcelona-El Prat with no change fees?

Certainly. Search results for flights to Barcelona-El Prat from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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