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

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $688.

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

Istanbul (IST) – chosen by Cheapflights users on 75% of 1-stop itineraries from Seattle to Barcelona-El Prat Airport on Cheapflights.

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

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 58m.

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

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 14h 50m.

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

For as low as $522, Scandinavian Airlines can have you in Barcelona-El Prat Airport from Seattle in 43h 10m. The distance between Seattle and Barcelona-El Prat Airport is about 5421 mi.

In terms of precipitation, rainfall in Barcelona-El Prat Airport ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona-El Prat Airport when rainfall is around 0.8 in.

If weather is an important factor for your trip to Barcelona-El Prat Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What are the most popular airlines that fly from Seattle to Barcelona-El Prat Airport?

Before booking your flight from Seattle to Barcelona-El Prat Airport check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

Where are the most common layover locations when flying from Seattle to Barcelona-El Prat Airport?

Seattle to Barcelona-El Prat Airport flights have a layover in London most of the time. Paris sees the second most layovers for non-direct flights flying from Seattle to Barcelona-El Prat Airport. Frankfurt am Main comes in third as the most popular layover location on Seattle to Barcelona-El Prat Airport flights.

Where are the least popular layover locations for Seattle to Barcelona-El Prat Airport flights?

The least popular layover on flights from Seattle to Barcelona-El Prat Airport is Amsterdam. Calgary is the second least popular location for layovers on flights from Seattle to Barcelona-El Prat Airport. Reykjavik comes next as the third least popular layover location for Seattle to Barcelona-El Prat Airport flights.

What are some popular things to do or see while on a layover in London?

London travelers tend to visit Hyde Park, Buckingham Palace, and Piccadilly Circus more than anywhere else. Hyde Park, Buckingham Palace, and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Those on a layover in London in need of a rental car can book one at London Heathrow for about $39.

What are some popular points of interest to see during a layover in Paris?

Eiffel Tower, Champs-Elysées, and Louvre Museum are the most popular attractions in Paris if you're in need of something to do during your layover. Eiffel Tower, Champs-Elysées, and Louvre Museum can be visited by traveling about 15.8 mi, 14.7 mi, and 14.3 mi respectively from Paris Charles de Gaulle. Those looking to explore during their layover in Paris can rent a car from Paris Charles de Gaulle for about $37 per day.

What are points of interest worth seeing during a layover in Frankfurt am Main?

Frankfurt am Main travelers tend to visit Römerberg, Hauptwache, and Festhalle more than any other attractions. Römerberg, Hauptwache, and Festhalle are located about 7.4 mi, 7.4 mi, and 6.5 mi, respectively from Frankfurt am Main. Travelers can rent a car at Frankfurt am Main for an average daily rate of $43 to make sightseeing during their layover a little easier.

Most accurate provider : When it comes to deals on Seattle-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Seattle-Barcelona-El Prat Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Barcelona-El Prat. 16 airlines have flights from Seattle/Tacoma Intl to Barcelona-El Prat on a regular basis. Booking flights from Seattle/Tacoma Intl to Barcelona-El Prat should not be difficult; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day.

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.

$244+ Flights from Seattle to Barcelona-El Prat Airport

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona-El Prat are usually found in November or February, booked 4 days in advance, depart on a Monday or Friday and return on a Tuesday

Cheap flight deals from Seattle to Barcelona-El Prat

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$480 (Mytrip)
One-way from	$244 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$741

Provider with most accurate pricing for Seattle/Tacoma Intl-Barcelona-El Prat flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Barcelona-El Prat flights.

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From Seattle/Tacoma Intl to Barcelona-El Prat

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One-way flight from Seattle/Tacoma Intl to Barcelona-El Prat

Search Deals

Highest demand for flights based on searches. 25% potential increase in price ($282 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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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 September 25, 2025.

Fri 10/104:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Thu 10/2310:30 amBCN - SEA

2 stops36h 30mScandinavian Airlines

Deal found 9/24

$480

Tue 11/117:30 amSEA - BCN

2 stops25h 50mScandinavian Airlines

Mon 11/177:10 pmBCN - SEA

2 stops36h 15mScandinavian Airlines

Deal found 9/23

$487

Sun 11/92:35 pmSEA - BCN

2 stops21h 00mMultiple Airlines

Thu 11/136:15 amBCN - SEA

2 stops19h 45mMultiple Airlines

Deal found 9/23

$496

Thu 11/137:10 amSEA - BCN

2 stops26h 10mScandinavian Airlines

Wed 11/197:10 pmBCN - SEA

2 stops36h 15mScandinavian Airlines

Deal found 9/24

$510

Mon 11/32:35 pmSEA - BCN

2 stops21h 05mMultiple Airlines

Fri 11/78:00 amBCN - SEA

2 stops18h 00mMultiple Airlines

Deal found 9/23

$513

Sun 11/27:25 amSEA - BCN

2 stops25h 55mScandinavian Airlines

Mon 11/107:10 pmBCN - SEA

2 stops36h 13mScandinavian Airlines

Deal found 9/24

$522

Fri 11/72:35 pmSEA - BCN

2 stops22h 00mMultiple Airlines

Fri 11/149:35 pmBCN - SEA

2 stops28h 25mMultiple Airlines

Deal found 9/23

$539

Wed 10/154:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Thu 11/67:10 pmBCN - SEA

2 stops36h 12mScandinavian Airlines

Deal found 9/22

$543

Sun 11/27:25 amSEA - BCN

2 stops25h 55mScandinavian Airlines

Wed 11/127:10 pmBCN - SEA

2 stops36h 21mScandinavian Airlines

Deal found 9/24

$552

Best flights from Seattle to Barcelona-El Prat
Discover carefully curated flight deals from Seattle to Barcelona-El Prat that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2025.

Mon 11/32:10 pmSEA - BCN

2 stops43h 10mScandinavian Airlines

Mon 11/107:10 pmBCN - SEA

2 stops36h 13mScandinavian Airlines

Deal found 9/24

$522

Sat 11/111:59 pmSEA - BCN

2 stops25h 36mUnited Airlines

Tue 11/111:35 pmBCN - SEA

3 stops38h 17mUnited Airlines

Deal found 9/24

$710

Sun 10/2611:59 pmSEA - BCN

1 stop29h 11mMultiple Airlines

Fri 11/71:35 pmBCN - SEA

2 stops33h 56mMultiple Airlines

Deal found 9/24

$713

Sun 11/27:25 amSEA - BCN

2 stops25h 55mScandinavian Airlines

Mon 11/107:10 pmBCN - SEA

2 stops36h 13mScandinavian Airlines

Deal found 9/24

$522

Fri 12/57:35 amSEA - BCN

2 stops25h 45mScandinavian Airlines

Sun 12/147:10 pmBCN - SEA

2 stops35h 49mScandinavian Airlines

Deal found 9/25

$580

Tue 10/141:40 pmSEA - BCN

2 stops34h 55mScandinavian Airlines

Tue 11/47:10 pmBCN - SEA

2 stops36h 15mScandinavian Airlines

Deal found 9/22

$592

Wed 10/1510:25 amSEA - BCN

2 stops46h 45mScandinavian Airlines

Thu 11/67:10 pmBCN - SEA

2 stops36h 12mScandinavian Airlines

Deal found 9/22

$592

Mon 11/312:45 pmSEA - BCN

2 stops44h 35mScandinavian Airlines

Tue 11/117:10 pmBCN - SEA

2 stops36h 13mScandinavian Airlines

Deal found 9/24

$592

Fri 10/174:20 pmSEA - BCN

2 stops33h 20mScandinavian Airlines

Sat 11/87:10 pmBCN - SEA

2 stops37h 46mScandinavian Airlines

Deal found 9/22

$679

Sun 10/124:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Mon 11/37:10 pmBCN - SEA

2 stops36h 15mScandinavian Airlines

Deal found 9/22

$691

Thu 11/67:25 amSEA - BCN

2 stops25h 55mScandinavian Airlines

Tue 11/117:10 pmBCN - SEA

2 stops36h 15mScandinavian Airlines

Deal found 9/25

$695

Last-minute flights from Seattle to Barcelona-El Prat
Discover last-minute flight deals from Seattle to Barcelona-El Prat. Data last updated September 25, 2025 and is based on user searches.

Tue 9/307:10 amSEA - BCN

2 stops41h 25mScandinavian Airlines

Tue 10/77:00 pmBCN - SEA

1 stop28h 00mScandinavian Airlines

Deal found 9/23

$573

Tue 9/3012:30 pmSEA - BCN

1 stop25h 40mTurkish Airlines

Tue 10/77:50 amBCN - SEA

1 stop18h 25mTurkish Airlines

Deal found 9/23

$609

Fri 10/104:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Thu 10/2310:30 amBCN - SEA

2 stops36h 30mScandinavian Airlines

Deal found 9/24

$480

Sun 10/124:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Fri 11/77:10 pmBCN - SEA

2 stops32h 50mScandinavian Airlines

Deal found 9/22

$571

Sun 10/124:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Sat 11/87:10 pmBCN - SEA

2 stops37h 46mScandinavian Airlines

Deal found 9/22

$601

Tue 10/141:40 pmSEA - BCN

2 stops34h 55mScandinavian Airlines

Thu 11/67:10 pmBCN - SEA

2 stops36h 12mScandinavian Airlines

Deal found 9/22

$592

Wed 10/154:20 pmSEA - BCN

1 stop16h 50mScandinavian Airlines

Thu 11/67:10 pmBCN - SEA

2 stops36h 12mScandinavian Airlines

Deal found 9/22

$543

Thu 10/1612:30 pmSEA - BCN

1 stop25h 40mTurkish Airlines

Wed 11/1212:10 pmBCN - SEA

1 stop37h 55mTurkish Airlines

Deal found 9/24

$600

Wed 10/223:45 pmSEA - BCN

2 stops24h 45mMultiple Airlines

Wed 10/295:45 amBCN - SEA

2 stops20h 15mMultiple Airlines

Deal found 9/22

$611

Mon 10/273:35 pmSEA - BCN

2 stops21h 15mMultiple Airlines

Wed 11/59:35 pmBCN - SEA

2 stops28h 25mMultiple Airlines

Deal found 9/23

$555

Mon 10/278:00 pmSEA - BCN

1 stop19h 50mTurkish Airlines

Wed 11/512:10 pmBCN - SEA

1 stop37h 55mTurkish Airlines

Deal found 9/23

$590

One-way flights from Seattle to Barcelona-El Prat
Search for one-way flight options from Seattle to Barcelona-El Prat. Find affordable one-way fares based on user searches. Data last updated September 25, 2025.

Mon 10/202:05 pmSEA - BCN

2 stops26h 10mMultiple Airlines

Deal found 9/23

$244

Sat 10/251:50 pmSEA - BCN

2 stops25h 10mMultiple Airlines

Deal found 9/25

$259

Tue 10/217:05 amSEA - BCN

2 stops32h 35mMultiple Airlines

Deal found 9/25

$261

Sat 10/189:30 pmSEA - BCN

2 stops51h 55mMultiple Airlines

Deal found 9/24

$272

Wed 10/228:15 pmSEA - BCN

2 stops40h 35mMultiple Airlines

Deal found 9/24

$281

Sun 11/233:10 pmSEA - BCN

2 stops17h 00mMultiple Airlines

Deal found 9/24

$285

Thu 10/237:00 amSEA - BCN

2 stops29h 50mMultiple Airlines

Deal found 9/23

$287

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 11/3

2:10 pm-6:20 pm

2 stops43h 10m

Barcelona-El Prat

Mon 11/10

7:10 pm-10:23 pm

2 stops36h 13m

$522

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 11/2

7:25 am-6:20 pm

2 stops25h 55m

Barcelona-El Prat

Mon 11/10

7:10 pm-10:23 pm

2 stops36h 13m

$522

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 12/5

7:35 am-6:20 pm

2 stops25h 45m

Barcelona-El Prat

Sun 12/14

7:10 pm-9:59 pm

2 stops35h 49m

$580

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Tue 10/14

1:40 pm-9:35 am

2 stops34h 55m

Barcelona-El Prat

Tue 11/4

7:10 pm-10:25 pm

2 stops36h 15m

$592

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Wed 10/15

10:25 am-6:10 pm

2 stops46h 45m

Barcelona-El Prat

Thu 11/6

7:10 pm-10:22 pm

2 stops36h 12m

$592

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Mon 11/3

12:45 pm-6:20 pm

2 stops44h 35m

Barcelona-El Prat

Tue 11/11

7:10 pm-10:23 pm

2 stops36h 13m

$592

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Fri 10/17

4:20 pm-10:40 am

2 stops33h 20m

Barcelona-El Prat

Sat 11/8

7:10 pm-11:56 pm

2 stops37h 46m

$679

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sun 10/12

4:20 pm-6:10 pm

1 stop16h 50m

Barcelona-El Prat

Mon 11/3

7:10 pm-10:25 pm

2 stops36h 15m

$691

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Thu 11/6

7:25 am-6:20 pm

2 stops25h 55m

Barcelona-El Prat

Tue 11/11

7:10 pm-10:25 pm

2 stops36h 15m

$695

SeattleBarcelona

SEA - BCN

SEABCN

Seattle/Tacoma Intl

Sat 11/1

11:59 pm-9:35 am

2 stops25h 36m

Barcelona-El Prat

Tue 11/11

1:35 pm-6:52 pm

3 stops38h 17m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 20 results

Compare providers for flights from Seattle to Barcelona-El Prat

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Barcelona-El Prat in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust Score*2 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Seattle-Barcelona-El Prat Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Barcelona-El Prat Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Barcelona-El Prat Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seattle-Barcelona-El Prat Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Barcelona-El Prat Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Prices

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 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 $523). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,060). 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?

A simple way to save on the total cost of your ticket is to fly from Seattle to Barcelona-El Prat Airport in the evening. If you’re flexible enough to do this you can expect to save up to 54% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Seattle to Barcelona-El Prat Airport?

Travelers seeking maximum savings on their Seattle to Barcelona-El Prat Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Barcelona-El Prat

See what other customers who have flown with Delta, United Airlines, and Icelandair from Seattle to Barcelona-El Prat Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,973 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,926 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Icelandair

7.0

Good

545 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Lufthansa

6.8

Okay

7,428 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

British Airways

6.7

Okay

7,399 reviews

Delta

8.0

Very good

7,973 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly from for flights from Seattle to Barcelona-El Prat?
Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Barcelona-El Prat. 16 airlines have flights from Seattle/Tacoma Intl to Barcelona-El Prat on a regular basis. Booking flights from Seattle/Tacoma Intl to Barcelona-El Prat should not be difficult; the airport handles an average of 0 outbound flights to Barcelona-El Prat per day.
How long is the flight from Seattle to Barcelona-El Prat Airport?
For as low as $522, Scandinavian Airlines can have you in Barcelona-El Prat Airport from Seattle in 43h 10m. The distance between Seattle and Barcelona-El Prat Airport is about 5421 mi.
What are the cheapest airlines flying from Seattle to Barcelona-El Prat Airport round-trip?
According to our current data, Icelandair ($388), Scandinavian Airlines ($465), and Air Canada ($478) offers the cheapest pricing from Seattle to Barcelona-El Prat Airport. Icelandair is priced at 54% lower than the current average price of a flight leaving 3 months from now.
Where are the most common layover locations when flying from Seattle to Barcelona-El Prat Airport?
Seattle to Barcelona-El Prat Airport flights have a layover in London most of the time. Paris sees the second most layovers for non-direct flights flying from Seattle to Barcelona-El Prat Airport. Frankfurt am Main comes in third as the most popular layover location on Seattle to Barcelona-El Prat Airport flights.
What are some popular things to do or see while on a layover in London?
London travelers tend to visit Hyde Park, Buckingham Palace, and Piccadilly Circus more than anywhere else. Hyde Park, Buckingham Palace, and Piccadilly Circus are located about 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Those on a layover in London in need of a rental car can book one at London Heathrow for about $39.
What are some popular points of interest to see during a layover in Paris?
Eiffel Tower, Champs-Elysées, and Louvre Museum are the most popular attractions in Paris if you're in need of something to do during your layover. Eiffel Tower, Champs-Elysées, and Louvre Museum can be visited by traveling about 15.8 mi, 14.7 mi, and 14.3 mi respectively from Paris Charles de Gaulle. Those looking to explore during their layover in Paris can rent a car from Paris Charles de Gaulle for about $37 per day.
What are points of interest worth seeing during a layover in Frankfurt am Main?
Frankfurt am Main travelers tend to visit Römerberg, Hauptwache, and Festhalle more than any other attractions. Römerberg, Hauptwache, and Festhalle are located about 7.4 mi, 7.4 mi, and 6.5 mi, respectively from Frankfurt am Main. Travelers can rent a car at Frankfurt am Main for an average daily rate of $43 to make sightseeing during their layover a little easier.
Where are the least popular layover locations for Seattle to Barcelona-El Prat Airport flights?
The least popular layover on flights from Seattle to Barcelona-El Prat Airport is Amsterdam. Calgary is the second least popular location for layovers on flights from Seattle to Barcelona-El Prat Airport. Reykjavik comes next as the third least popular layover location for Seattle to Barcelona-El Prat Airport flights.
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 $523). Flying from Seattle to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,060). 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

Calella

Roses

Castelldefels

L'Hospitalet de Llobregat

Cadaques

El Prat de Llobregat

Badalona

Pineda de Mar

Santa Susanna

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Seattle to Barcelona-El Prat

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$388	Average$593	FlexibilityNo cancel fee	On-time76%
Scandinavian Airlines	Cheapest$465	Average$568	FlexibilityNo cancel fee	On-time77%
Air Canada	Cheapest$478	Average$711	FlexibilityNo cancel fee	On-time67%
Aer Lingus	Cheapest$498	Average$745	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$500	Average$802	FlexibilityNo cancel fee	On-time69%
Iberia	Cheapest$507	Average$810	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$549	Average$775	FlexibilityNo cancel fee	On-time70%
Lufthansa	Cheapest$563	Average$850	FlexibilityNo cancel fee	On-time76%
KLM	Cheapest$574	Average$887	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$590	Average$874	FlexibilityNo cancel fee	On-time71%

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$244+ Cheap flights from Seattle (SEA) to Barcelona-El Prat (BCN)

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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona-El Prat are usually found in November or February, booked 4 days in advance, depart on a Monday or Friday and return on a Tuesday

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Cheapest flights from Seattle to Barcelona-El PratExplore 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 September 25, 2025.

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 September 25, 2025.

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Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Barcelona-El Prat in September.

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.

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

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

Reviews of airlines servicing Barcelona-El Prat

See what other customers who have flown with Delta, United Airlines, and Icelandair from Seattle to Barcelona-El Prat Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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What are some popular things to do or see while on a layover in London?

What are some popular points of interest to see during a layover in Paris?

What are points of interest worth seeing during a layover in Frankfurt am Main?

Where are the least popular layover locations for Seattle to Barcelona-El Prat Airport flights?

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

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Top 10 airlines flying from Seattle to Barcelona-El Prat

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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 September 25, 2025.