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Cheap flights from Barcelona-El Prat Airport to Seattle from £438

BCN — SEA
21 Nov — 28 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Barcelona-El Prat to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Barcelona-El Prat to Seattle

Thu 5/1114:40 -
1 stop35h 20m
Wed 18/1114:35 -
1 stop14h 05m
Deal found 19/10£602
Sat 21/1106:30 -
1 stop19h 40m
Wed 2/1219:05 -
1 stop37h 10m
Deal found 21/10£656
Mon 2/1106:30 -
1 stop20h 40m
Sun 15/1119:05 -
1 stop37h 00m
Deal found 19/10£660
Sun 22/1106:00 -
2 stops20h 10m
Sun 31/121:55 -
1 stop25h 40m
Deal found 20/10£660
Fri 25/1219:55 -
1 stop24h 55m
Sun 10/115:25 -
1 stop13h 35m
Deal found 17/10£666
Tue 3/1119:55 -
1 stop24h 52m
Mon 16/1115:25 -
1 stop13h 35m
Deal found 19/10£674
Thu 3/1206:00 -
1 stop14h 50m
Mon 14/1215:25 -
1 stop16h 35m
Deal found 20/10£675
Mon 9/1106:00 -
1 stop14h 47m
Mon 23/1115:25 -
1 stop13h 35m
Deal found 18/10£676

Find flight deals from Barcelona-El Prat to Seattle

Round-trip from

£602

One-way from

£438

Popular in

July

Cheapest in

October

Average price

£568

Good one-way deal

£1,068 or less
Icelandair
  • Icelandair
  • 5/11-18/11
  • 2 total stops
  • 49h 25m total
  • Barcelona to Seattle
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7/12-31/12
  • 7/12-31/12
  • 1 total stop
  • 23h 15m total
  • Barcelona to Seattle
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
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Price to beat on a one-way flight from Barcelona-El Prat to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Mon 7/12

21:10-11:25

1 stop23h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£438

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Sat 21/11

06:30-17:10

1 stop19h 40m

Seattle/Tacoma Intl

Wed 2/12

19:05-17:15

1 stop37h 10m

£656

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Mon 1/2

05:55-12:00

1 stop15h 05m

Seattle/Tacoma Intl

Sun 14/2

19:32-08:20

2 stops27h 48m

£656

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Thu 14/1

11:50-13:00

1 stop34h 10m

Seattle/Tacoma Intl

Sun 17/1

05:00-08:20

2 stops18h 20m

£672

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Sat 21/11

06:00-11:47

1 stop14h 47m

Seattle/Tacoma Intl

Wed 2/12

11:00-14:00

2 stops18h 00m

£675

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Tue 17/11

06:00-11:47

1 stop14h 47m

Seattle/Tacoma Intl

Tue 24/11

16:05-19:20

1 stop18h 15m

£676

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Wed 11/11

06:00-14:55

2 stops17h 55m

Seattle/Tacoma Intl

Wed 18/11

07:15-11:10

2 stops18h 55m

£680

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Tue 17/11

06:00-17:10

2 stops20h 10m

Seattle/Tacoma Intl

Tue 24/11

16:05-17:00

1 stop15h 55m

£680

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Sun 15/11

06:00-19:05

2 stops22h 05m

Seattle/Tacoma Intl

Sun 22/11

15:25-14:55

1 stop14h 30m

£680

BarcelonaSeattle

BCN Barcelona-El Prat - SEA Seattle/Tacoma Intl

BCNSEA

Barcelona-El Prat

Tue 1/12

06:00-13:50

1 stop16h 50m

Seattle/Tacoma Intl

Tue 8/12

07:38-11:10

2 stops18h 32m

£681

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 19 resultsSorted by cheapest first
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Best time to book a flight from Barcelona-El Prat to Seattle

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

Cheapflights Insights

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

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

The price you pay for your flight from Barcelona-El Prat Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 36 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 Barcelona-El Prat Airport to Seattle?

Currently, October is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of £568). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of £757). 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 BCN to SEA?

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

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

Airfare is typical for this route at the moment.

Barcelona-El Prat Airport to Seattle flights typically cost between £564 and £646 in November.
The cheapest return price found within the last 5 days was £602 on Icelandair (5 Nov–18 Nov).

Related info for your journey

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

    If you book a flight to Seattle from Barcelona-El Prat, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Barcelona-El Prat to Seattle/Tacoma Intl per day from 0 different airlines.

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

    There are many flights that can get you from Barcelona-El Prat Airport to Seattle in 14h 47m. Fly via Turkish Airlines, United Airlines, or Delta to get the fastest option. The distance from Barcelona-El Prat Airport to Seattle is about 5421 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Barcelona-El Prat Airport to Seattle on time: KLM (35%), Air France (35%), Delta (35%).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Barcelona-El Prat to Seattle 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 Barcelona-El Prat Airport to Seattle?

    Currently, October is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of £568). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of £757). 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

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