Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 557

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
4 Jan — 11 Jan1
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
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 5 December 2025.

Wed 31/127:10 a.m.SEA - BCN
2 stops26h 10mScandinavian Airlines
Wed 7/17:10 p.m.BCN - SEA
2 stops36h 15mScandinavian Airlines
Deal found 3/12C$ 1,226
Fri 26/1210:52 a.m.SEA - BCN
2 stops36h 28mUnited Airlines
Fri 23/16:50 a.m.BCN - SEA
3 stops23h 22mUnited Airlines
Deal found 3/12C$ 1,556
Tue 23/1210:55 p.m.SEA - BCN
1 stop24h 45mDelta
Fri 9/19:55 a.m.BCN - SEA
2 stops21h 30mDelta
Deal found 4/12C$ 1,626
Wed 24/123:05 p.m.SEA - BCN
1 stop16h 25mDelta
Fri 9/16:00 a.m.BCN - SEA
2 stops25h 25mDelta
Deal found 4/12C$ 1,633
Tue 23/121:55 p.m.SEA - BCN
2 stops34h 40mUnited Airlines
Wed 7/11:50 p.m.BCN - SEA
2 stops41h 08mUnited Airlines
Deal found 3/12C$ 1,661
Thu 25/121:40 p.m.SEA - BCN
1 stop15h 20mDelta
Fri 9/19:55 a.m.BCN - SEA
2 stops21h 30mDelta
Deal found 4/12C$ 1,694
Tue 23/1210:55 p.m.SEA - BCN
1 stop24h 45mDelta
Sat 10/16:00 a.m.BCN - SEA
2 stops19h 40mDelta
Deal found 4/12C$ 1,724
Wed 24/123:05 p.m.SEA - BCN
1 stop19h 00mDelta
Sat 10/16:00 a.m.BCN - SEA
2 stops19h 40mDelta
Deal found 4/12C$ 1,731

Find 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 5 December 2025.

Round-trip from

C$ 628

One-way from

C$ 557

Popular in

June

Cheapest in

January

Average price

C$ 1,556
Icelandair
  • Icelandair
  • 20/2-10/3
  • 2 total stops
  • 27h 50m total
  • Seattle to Barcelona
Search Deals
United Airlines
  • United Airlines
  • 29/1
  • 1 total stop
  • 17h 00m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 536 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 December 2025
Search Deals

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 5 December 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 9/1

3:10 p.m.-5:35 p.m.

1 stop17h 25m

Barcelona-El Prat

Fri 23/1

6:50 a.m.-9:12 p.m.

3 stops23h 22m

C$ 681

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 18/1

11:45 p.m.-9:35 a.m.

2 stops24h 50m

Barcelona-El Prat

Sun 25/1

6:50 a.m.-10:43 p.m.

3 stops24h 53m

C$ 683

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 30/1

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

2 stops27h 50m

Barcelona-El Prat

Tue 3/2

11:55 a.m.-1:20 p.m.

1 stop34h 25m

C$ 710

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/3

7:10 a.m.-6:20 p.m.

2 stops26h 10m

Barcelona-El Prat

Fri 13/3

7:10 p.m.-10:20 p.m.

2 stops35h 10m

C$ 793

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 2/5

7:20 a.m.-6:10 p.m.

2 stops25h 50m

Barcelona-El Prat

Thu 21/5

12:40 p.m.-1:45 p.m.

2 stops34h 05m

C$ 872

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 7/5

11:20 a.m.-4:00 p.m.

2 stops19h 40m

Barcelona-El Prat

Mon 25/5

7:55 a.m.-3:40 p.m.

1 stop16h 45m

C$ 899

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 17/3

11:45 a.m.-6:05 p.m.

2 stops22h 20m

Barcelona-El Prat

Sun 29/3

7:00 p.m.-10:22 p.m.

2 stops36h 22m

C$ 984

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 19/3

1:45 p.m.-6:20 p.m.

2 stops20h 35m

Barcelona-El Prat

Sun 29/3

7:00 p.m.-11:23 p.m.

2 stops37h 23m

C$ 984

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 19/3

1:45 p.m.-6:20 p.m.

2 stops20h 35m

Barcelona-El Prat

Sat 28/3

7:10 p.m.-11:23 p.m.

2 stops36h 13m

C$ 1,054

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 7/5

9:50 a.m.-9:30 p.m.

2 stops26h 40m

Barcelona-El Prat

Sun 24/5

10:55 a.m.-3:40 p.m.

1 stop13h 45m

C$ 1,068

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 21 results
1
2
3

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 28 November 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of C$ 546). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,202). 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 5 December 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 37% on airfare.

How much does it cost to fly round-trip from Seattle to Barcelona-El Prat Airport?

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 0 different airlines.

  • 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 25m. United Airlines provides one of the quickest options available for as low as C$ 681. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km. This flight may include one or multiple stops.

  • 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, October is the cheapest month in which you can book a flight from Seattle to Barcelona-El Prat Airport (average of C$ 546). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,202). 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 5 December 2025.
Pearson Intl to Barcelona-El Prat flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Calgary to Barcelona-El Prat flights
Barcelona-El Prat Airport to Palma de Mallorca flights
Barcelona-El Prat Airport to Nice flights
Barcelona-El Prat Airport to Lisbon flights
Barcelona-El Prat Airport to Ibiza flights
Barcelona-El Prat Airport to Rome Fiumicino Airport flights
Barcelona-El Prat Airport to London Gatwick Airport flights
Barcelona-El Prat Airport to Bordeaux flights
Barcelona-El Prat Airport to Naples flights
Barcelona-El Prat Airport to Palma de Mallorca flights
Barcelona-El Prat Airport to Paris Orly Airport flights
Barcelona-El Prat Airport to Marseille flights
Barcelona-El Prat Airport to Paris Charles de Gaulle Airport flights
Barcelona-El Prat Airport to Ibiza flights
Barcelona-El Prat Airport to Faro flights
Barcelona-El Prat Airport to Porto flights
Barcelona-El Prat Airport to Seville flights
Barcelona-El Prat Airport to Dublin flights
Barcelona-El Prat Airport to Tangier 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.