Find flights
Deals
When to book
FAQs

Cheap flights from Seattle to Barcelona-El Prat Airport from C$ 549

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 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
22 Jan — 29 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 23 December 2025.

Wed 24/1210:52 a.m.SEA - BCN
2 stops18h 13mSWISS
Mon 26/12:55 p.m.BCN - SEA
2 stops39h 17mSWISS
Deal found 22/12C$ 2,475
Wed 24/121:35 p.m.SEA - BCN
2 stops20h 25mSWISS
Sat 24/19:55 a.m.BCN - SEA
2 stops20h 17mSWISS
Deal found 22/12C$ 2,544
Tue 23/125:54 p.m.SEA - BCN
2 stops37h 26mUnited Airlines
Sun 25/11:55 p.m.BCN - SEA
3 stops41h 48mUnited Airlines
Deal found 22/12C$ 2,598
Tue 23/129:58 p.m.SEA - BCN
2 stops33h 32mBritish Airways
Wed 28/112:30 p.m.BCN - SEA
1 stop18h 37mBritish Airways
Deal found 22/12C$ 2,736
Tue 23/129:58 p.m.SEA - BCN
2 stops33h 32mBritish Airways
Mon 26/17:20 p.m.BCN - SEA
1 stop25h 10mBritish Airways
Deal found 22/12C$ 2,752
Thu 25/127:07 a.m.SEA - BCN
2 stops40h 53mFinnair
Fri 23/110:40 a.m.BCN - SEA
1 stop19h 05mFinnair
Deal found 22/12C$ 2,873
Wed 24/126:50 p.m.SEA - BCN
1 stop14h 35mBritish Airways
Wed 31/126:40 a.m.BCN - SEA
1 stop19h 15mBritish Airways
Deal found 21/12C$ 2,930
Mon 29/122:05 p.m.SEA - BCN
1 stop15h 55mDelta
Mon 5/11:00 p.m.BCN - SEA
1 stop31h 50mDelta
Deal found 21/12C$ 3,041
Sun 28/1210:30 a.m.SEA - BCN
2 stops19h 30mDelta
Mon 5/11:00 p.m.BCN - SEA
1 stop31h 50mDelta
Deal found 21/12C$ 3,047
Tue 23/127:10 a.m.SEA - BCN
2 stops24h 25mMultiple Airlines
Thu 1/111:50 a.m.BCN - SEA
2 stops31h 36mMultiple Airlines
Deal found 22/12C$ 3,091

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 23 December 2025.

Round-trip from

C$ 620

One-way from

C$ 549

Popular in

June

Cheapest in

February

Average price

C$ 1,523
Icelandair
  • Icelandair
  • 4/2-8/2
  • 2 total stops
  • 27h 50m total
  • Seattle to Barcelona
Search Deals
United Airlines
  • United Airlines
  • 19/1
  • 1 total stop
  • 17h 00m total
  • Seattle to Barcelona
Search Deals
Highest demand for flights based on searches. 25% 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 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 23 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

Thu 19/2

8:17 a.m.-8:20 a.m.

1 stop15h 03m

Barcelona-El Prat

Tue 17/3

12:35 p.m.-7:03 p.m.

2 stops38h 28m

C$ 640

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 19/1

7:00 a.m.-9:00 a.m.

1 stop17h 00m

Barcelona-El Prat

Tue 27/1

1:35 p.m.-4:01 p.m.

2 stops35h 26m

C$ 640

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 20/1

7:00 a.m.-9:00 a.m.

1 stop17h 00m

Barcelona-El Prat

Tue 27/1

1:35 p.m.-9:12 p.m.

3 stops40h 37m

C$ 640

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 21/1

5:00 a.m.-9:00 a.m.

2 stops19h 00m

Barcelona-El Prat

Tue 27/1

1:35 p.m.-9:12 p.m.

3 stops40h 37m

C$ 646

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 16/2

2:00 p.m.-4:20 p.m.

1 stop17h 20m

Barcelona-El Prat

Tue 24/2

1:35 p.m.-7:03 p.m.

2 stops38h 28m

C$ 661

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 4/2

6:50 p.m.-7:45 p.m.

1 stop15h 55m

Barcelona-El Prat

Sun 8/2

9:20 p.m.-4:55 p.m.

1 stop28h 35m

C$ 665

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 17/2

8:30 a.m.-2:20 p.m.

2 stops20h 50m

Barcelona-El Prat

Mon 23/2

11:10 a.m.-11:40 a.m.

1 stop33h 30m

C$ 666

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 11/2

7:10 a.m.-5:05 p.m.

2 stops24h 55m

Barcelona-El Prat

Mon 23/2

1:00 p.m.-11:40 a.m.

1 stop31h 40m

C$ 668

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 11/2

7:15 a.m.-5:05 p.m.

2 stops24h 50m

Barcelona-El Prat

Wed 25/2

1:00 p.m.-11:40 a.m.

1 stop31h 40m

C$ 668

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 24/2

8:17 a.m.-8:20 a.m.

1 stop15h 03m

Barcelona-El Prat

Thu 5/3

1:35 p.m.-7:28 p.m.

2 stops38h 53m

C$ 670

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/12

Showing 1-10 of 16 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 19 December 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 47 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$ 487). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,190). 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 23 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.

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 15h 03m. United Airlines provides one of the quickest options available for as low as C$ 640. The distance from Seattle to Barcelona-El Prat Airport is about 8724 km.

  • 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$ 487). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of C$ 1,190). 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 23 December 2025.
Halifax to Barcelona-El Prat flights
Pierre Elliott Trudeau Intl to Barcelona-El Prat flights
Pearson 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 Málaga flights
Barcelona-El Prat Airport to Milan Malpensa Airport flights
Barcelona-El Prat Airport to Venice Marco Polo Airport 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 Naples flights
Barcelona-El Prat Airport to Paris Orly Airport flights
Barcelona-El Prat Airport to Dublin flights
Barcelona-El Prat Airport to Luqa flights
Barcelona-El Prat Airport to Seville flights
Barcelona-El Prat Airport to Porto flights
Barcelona-El Prat Airport to Palma de Mallorca flights
Barcelona-El Prat Airport to Madrid flights
Barcelona-El Prat Airport to Split flights
Barcelona-El Prat Airport to Prague flights
Barcelona-El Prat Airport to Paris Charles de Gaulle Airport 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.