Find flights
When to book
Airlines
FAQs

Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 396

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
23 Aug — 30 Aug1
1 adult

Cheap flight deals from Seattle to Barcelona-El Prat

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona-El Prat (BCN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 August 2025.

Round-trip from

C$ 845

One-way from

C$ 396

Popular in

June

Cheapest in

November

Average price

C$ 983
Scandinavian Airlines
  • Scandinavian Airlines
  • 3/10-13/10
  • 4 total stops
  • 68h 10m total
  • Seattle to Barcelona
Search Deals
30/9
  • 30/9
  • 2 total stops
  • 49h 20m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 533 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 71 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Seattle to Barcelona-El Prat

Cheapest flights from Seattle to Barcelona-El Prat
Explore the most affordable flight options available from Seattle to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2025.

Fri 3/104:20 p.m.SEA - BCN
2 stops33h 20mScandinavian Airlines
Mon 13/107:00 p.m.BCN - SEA
2 stops34h 50mScandinavian Airlines
Deal found 17/8C$ 845
Thu 16/1012:45 p.m.SEA - BCN
2 stops35h 05mScandinavian Airlines
Thu 23/1010:25 a.m.BCN - SEA
2 stops20h 57mScandinavian Airlines
Deal found 16/8C$ 846
Fri 24/107:35 p.m.SEA - BCN
1 stop17h 50mAer Lingus
Fri 21/1111:30 a.m.BCN - SEA
1 stop15h 50mAer Lingus
Deal found 17/8C$ 852
Mon 8/94:00 p.m.SEA - BCN
2 stops56h 40mScandinavian Airlines
Thu 25/910:25 a.m.BCN - SEA
1 stop36h 35mScandinavian Airlines
Deal found 18/8C$ 853
Tue 25/1112:00 p.m.SEA - BCN
2 stops45h 20mScandinavian Airlines
Tue 9/127:10 p.m.BCN - SEA
2 stops36h 13mScandinavian Airlines
Deal found 16/8C$ 863
Wed 17/94:20 p.m.SEA - BCN
1 stop16h 50mScandinavian Airlines
Thu 25/910:30 a.m.BCN - SEA
2 stops36h 30mScandinavian Airlines
Deal found 17/8C$ 864
Wed 17/94:20 p.m.SEA - BCN
1 stop16h 50mScandinavian Airlines
Thu 16/1010:30 a.m.BCN - SEA
2 stops36h 30mScandinavian Airlines
Deal found 17/8C$ 867
Wed 17/94:20 p.m.SEA - BCN
1 stop16h 50mScandinavian Airlines
Tue 14/107:00 p.m.BCN - SEA
1 stop28h 00mScandinavian Airlines
Deal found 17/8C$ 871
Tue 16/91:40 p.m.SEA - BCN
2 stops34h 55mScandinavian Airlines
Thu 16/1010:30 a.m.BCN - SEA
2 stops36h 30mScandinavian Airlines
Deal found 17/8C$ 872
Tue 16/910:25 a.m.SEA - BCN
2 stops38h 10mScandinavian Airlines
Tue 14/107:00 p.m.BCN - SEA
1 stop28h 00mScandinavian Airlines
Deal found 17/8C$ 877
Sun 14/94:20 p.m.SEA - BCN
1 stop16h 50mScandinavian Airlines
Wed 15/107:00 p.m.BCN - SEA
2 stops52h 44mScandinavian Airlines
Deal found 17/8C$ 879
Wed 8/104:20 p.m.SEA - BCN
1 stop16h 50mScandinavian Airlines
Mon 13/107:00 p.m.BCN - SEA
2 stops34h 50mScandinavian Airlines
Deal found 17/8C$ 885

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Barcelona-El Prat that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 August 2025.
Use the filters below to find and compare flights from Seattle to Barcelona-El Prat Airport that are best for you.

Fly from

Seattle

Fly to

Barcelona-El Prat

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 3/10

4:20 p.m.-10:40 a.m.

2 stops33h 20m

Barcelona-El Prat

Mon 13/10

7:00 p.m.-8:50 p.m.

2 stops34h 50m

C$ 845

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 16/10

12:45 p.m.-8:50 a.m.

2 stops35h 05m

Barcelona-El Prat

Thu 23/10

10:25 a.m.-10:22 p.m.

2 stops20h 57m

C$ 846

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 24/10

7:35 p.m.-10:25 p.m.

1 stop17h 50m

Barcelona-El Prat

Fri 21/11

11:30 a.m.-6:20 p.m.

1 stop15h 50m

C$ 852

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 8/9

4:00 p.m.-9:40 a.m.

2 stops56h 40m

Barcelona-El Prat

Thu 25/9

10:25 a.m.-2:00 p.m.

1 stop36h 35m

C$ 853

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 3/10

4:20 p.m.-10:40 a.m.

2 stops33h 20m

Barcelona-El Prat

Sat 18/10

9:40 a.m.-2:44 p.m.

2 stops38h 04m

C$ 853

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 3/10

4:20 p.m.-10:40 a.m.

2 stops33h 20m

Barcelona-El Prat

Wed 15/10

7:00 p.m.-2:44 p.m.

2 stops52h 44m

C$ 853

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 15/11

2:00 p.m.-6:20 p.m.

2 stops43h 20m

Barcelona-El Prat

Thu 27/11

7:10 p.m.-11:24 p.m.

2 stops37h 14m

C$ 863

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 16/11

12:00 p.m.-6:20 p.m.

2 stops45h 20m

Barcelona-El Prat

Wed 26/11

7:10 p.m.-11:24 p.m.

2 stops37h 14m

C$ 863

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 7/10

2:10 p.m.-9:35 a.m.

2 stops34h 25m

Barcelona-El Prat

Tue 14/10

7:00 p.m.-8:50 p.m.

2 stops34h 50m

C$ 863

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 15/11

2:00 p.m.-6:20 p.m.

2 stops43h 20m

Barcelona-El Prat

Wed 26/11

7:10 p.m.-11:24 p.m.

2 stops37h 14m

C$ 863

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/8

Showing 1-10 of 17 results
1
2

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 round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Barcelona-El Prat. Price data was last updated on 8 August 2025.

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 4 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 C$ 604). Flying from Seattle to Barcelona-El Prat Airport in July is currently the most expensive (average of C$ 795). 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?

Find hourly flight availability from Seattle to Barcelona-El Prat. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 August 2025.

One of the essential ways to save on airfare from Seattle to Barcelona-El Prat Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 38% on airfare.

What’s the top layover airport for flights from Seattle to Barcelona-El Prat Airport?

Share of one-stop round-trip flights from Seattle to Barcelona-El Prat Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Copenhagen (CPH) – chosen by Cheapflights users on 25% of one-stop itineraries from Seattle to Barcelona-El Prat Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Barcelona-El Prat Airport?

Average round-trip fare for 1-stop flights from Seattle to Barcelona-El Prat Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Copenhagen (CPH) is the most affordable 1-stop option, with an average round-trip price of C$ 681.

What’s the fastest layover option from Seattle to Barcelona-El Prat Airport?

Shortest average travel time for 1-stop one-way flights from Seattle to Barcelona-El Prat Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 15h 15m.

Which airport typically offers the quickest layover for flights from Seattle to Barcelona-El Prat Airport?

Average layover duration for 1-stop one-way flights from Seattle to Barcelona-El Prat Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 2h 34m.

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona-El Prat. Reviews last updated 18 August 2025.
Read reviews from past customers who have flown Lufthansa from Seattle to Barcelona-El Prat Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Lufthansa
6.8
Okay
7,330 reviews
Check prices

Entertainment

6.4

Food

6.3

Boarding

7.0

Overall

6.8

Crew

7.6

Comfort

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.
Lufthansa
6.8
Okay
7,330 reviews
Lufthansa
6.8
Okay
7,330 reviews
Check prices

Entertainment

6.4

Food

6.3

Boarding

7.0

Overall

6.8

Crew

7.6

Comfort

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

SFO - FRA

Convenient flight to my destination. Good entertainment options on board. I was seated close to some people who had noisy children which made sleeping a bit challenging.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Barcelona-El Prat. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Barcelona-El Prat from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Barcelona-El Prat should be relatively easy as there are 0 daily outbound flights to Barcelona-El Prat from 1 airline.

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

    A quick flight from Seattle to Barcelona-El Prat Airport can take about 17h 50m. Scandinavian Airlines provides one of the quickest options available for as low as C$ 852. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Seattle to Barcelona-El Prat Airport round-trip?

    Our cheapest airline available from Seattle to Barcelona-El Prat Airport is Lufthansa. Our recent data shows that you can find tickets from as low as C$ 713 on this airline. You may be able to fly from Seattle to Barcelona-El Prat Airport for 39% less than the average price by searching for this airline.

  • 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 vacation 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 C$ 604). Flying from Seattle to Barcelona-El Prat Airport in July is currently the most expensive (average of C$ 795). 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
Santa Susanna
Badalona
L'Hospitalet de Llobregat

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other flights to Barcelona-El Prat

Explore flights to Barcelona-El Prat departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 August 2025.
Calgary to Barcelona-El Prat flights
Halifax to Barcelona-El Prat flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Pearson Intl to Barcelona-El Prat flights
Barcelona-El Prat Airport to Palma de Mallorca flights
Barcelona-El Prat Airport to Milan Malpensa Airport flights
Barcelona-El Prat Airport to Lyon flights
Barcelona-El Prat Airport to Ibiza flights
Barcelona-El Prat Airport to Málaga flights
Barcelona-El Prat Airport to Marseille flights
Barcelona-El Prat Airport to Marrakech flights
Barcelona-El Prat Airport to Rome Fiumicino Airport flights
Barcelona-El Prat Airport to Vienna flights
Barcelona-El Prat Airport to Venice Marco Polo Airport flights
Barcelona-El Prat Airport to Geneva flights
Barcelona-El Prat Airport to Algiers flights
Barcelona-El Prat Airport to Belgrade flights
Barcelona-El Prat Airport to Palma de Mallorca flights
Barcelona-El Prat Airport to Faro flights
Barcelona-El Prat Airport to Porto flights
Barcelona-El Prat Airport to London Gatwick Airport flights
Barcelona-El Prat Airport to Seville flights

Top airline flying from Seattle to Barcelona-El Prat

Discover the top airline that operate flights from Seattle to Barcelona-El Prat. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 August 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapestC$ 713AverageC$ 849FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Barcelona-El Prat?

Deals for Seattle to Barcelona-El Prat flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Barcelona-El Prat for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Seattle to Barcelona-El Prat with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Barcelona-El Prat become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Barcelona-El Prat flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.