SEA - BCN

C$ 557 Find Cheap Flights from Seattle to Barcelona

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Barcelona-El Prat departing on 2/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Barcelona-El Prat Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Barcelona, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Barcelona, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
C$ 724
Overall average: C$ 916
Scandinavian Airlines
Sun 30/8Thu 24/9
SEA - BCN • 1 stop
Cheapest direct flights
C$ 1,206
Delta
Tue 7/7Wed 15/7
SEA - BCN • Direct
Direct flights
3 days a week
Tue, Thu, Sat
You can fly direct with Delta. Average duration is 0
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top airlines
Scandinavian Airlines
Cheapest • from C$ 724 (round-trip)
Lufthansa
Best reviews • 6.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Reykjavik (KEF)
Cheapest • Avg C$ 592 (round-trip)
Reykjavik (KEF)
Shortest trip • 13h 51m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 36% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Barcelona-El Prat!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Barcelona-El Prat (SEA-BCN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Barcelona-El Prat that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Barcelona-El Prat

Sun, 30 Aug - Thu, 24 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
12:40 p.m. - 1:45 p.m.
BCN
-
SEA
34h 05m
2 stops
C$ 724Scandinavian Airlines
Sun, 30 Aug - Sat, 26 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 737Scandinavian Airlines
Tue, 8 Sep - Tue, 22 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 10:25 p.m.
BCN
-
SEA
36h 25m
2 stops
C$ 845Scandinavian Airlines
Tue, 4 Aug - Tue, 22 Sep
Condor Logo
6:05 p.m. - 10:10 p.m.
SEA
-
BCN
19h 05m
1 stop
Condor Logo
8:00 a.m. - 3:40 p.m.
BCN
-
SEA
16h 40m
1 stop
C$ 846Condor
Sun, 30 Aug - Tue, 22 Sep
Scandinavian Airlines Logo
3:55 p.m. - 6:10 p.m.
SEA
-
BCN
17h 15m
1 stop
Scandinavian Airlines Logo
7:00 p.m. - 10:25 p.m.
BCN
-
SEA
36h 25m
2 stops
C$ 860Scandinavian Airlines
Sun, 30 Aug - Sat, 26 Sep
Scandinavian Airlines Logo
5:45 p.m. - 6:10 p.m.
SEA
-
BCN
39h 25m
2 stops
Scandinavian Airlines Logo
7:00 p.m. - 1:45 p.m.
BCN
-
SEA
27h 45m
1 stop
C$ 871Scandinavian Airlines
Wed, 5 Aug - Tue, 22 Sep
Condor Logo
5:40 p.m. - 10:10 p.m.
SEA
-
BCN
19h 30m
1 stop
Condor Logo
10:25 a.m. - 3:40 p.m.
BCN
-
SEA
14h 15m
1 stop
C$ 887Condor
Wed, 8 Apr - Tue, 19 May
Turkish Airlines Logo
7:10 p.m. - 5:40 p.m.
SEA
-
BCN
37h 30m
1 stop
Turkish Airlines Logo
12:10 p.m. - 5:15 p.m.
BCN
-
SEA
38h 05m
1 stop
C$ 889Turkish Airlines
Wed, 5 Aug - Tue, 22 Sep
Condor Logo
5:40 p.m. - 4:05 p.m.
SEA
-
BCN
13h 25m
1 stop
Condor Logo
10:25 a.m. - 3:40 p.m.
BCN
-
SEA
14h 15m
1 stop
C$ 891Condor
Wed, 5 Aug - Tue, 22 Sep
Turkish Airlines Logo
7:10 p.m. - 10:45 a.m.
SEA
-
BCN
30h 35m
1 stop
Turkish Airlines Logo
7:40 a.m. - 5:15 p.m.
BCN
-
SEA
18h 35m
1 stop
C$ 894Turkish Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Barcelona-El Prat flights

Get data-powered insights and trends into flights from Seattle to Barcelona-El Prat to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Barcelona-El Prat Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Barcelona-El Prat Airport is February, where tickets cost C$ 665 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 1,564 and C$ 1,321 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Barcelona-El Prat Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Barcelona-El Prat Airport, you should book around 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Find deals

Good to know

Low seasonNovember
Cheapest flightC$ 557
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly (6% more expensive on average)
Flight from Seattle to Barcelona

When to book flights from Seattle to Barcelona-El Prat

Are your dates flexible? Find out the best times to travel from Seattle to Barcelona-El Prat based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Barcelona flights

  • Can I get special assistance services at SEA?

    Suppose you are disabled, sick, or have limited mobility. In that case, there are TSA Care professionals who can offer you the special assistance services you’ll require while at SEA, provided you inform them of the services you will require when booking your flight or at least 72h before your flight.

  • Does SEA have a children’s play area?

    SEA does have a children’s play area between Central Terminal and gates A. At this children’s play area, you can let your kids have fun as you wait for your flight to Barcelona.

  • Can I leave some of my luggage at BCN?

    If you want to leave some of your luggage at BCN, you’re in luck, as the airport boasts two Left Luggage Offices. One is situated on the 3rd Floor of T1, while the other is on the ground floor of Terminal 2B. At either, you can store some of your baggage for as long as you want.

  • How can I get special in-flight services when flying from SEA to BCN?

    If you require special in-flight services from SEA to BCN, you should inform the airline you intend to travel with of the services you will need when booking your flight or at least 72h before your flight.

  • What is the cheapest flight from Seattle to Barcelona-El Prat Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Barcelona-El Prat Airport was C$ 557 for a one-way ticket and C$ 724 for a round-trip.

  • Which airports will I be using when flying from Seattle to Barcelona?

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Barcelona is Barcelona-El Prat.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Barcelona?

    Only Air France offers inflight Wi-Fi service on the Seattle to Barcelona flight route.

  • Which aircraft models fly most regularly from Seattle to Barcelona?

    The Airbus A330-900neo is the aircraft model that flies most regularly on the Seattle to Barcelona flight route.

  • Which airline alliances offer flights from Seattle to Barcelona?

    Star Alliance is the only airline alliance operating flights between Seattle and Barcelona.

  • How does KAYAK find such low prices on flights from Seattle to Barcelona?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Barcelona.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Barcelona?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Barcelona from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Barcelona?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Barcelona with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Barcelona?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Barcelona from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Barcelona-El Prat Airport

  • On the date you’re scheduled to fly from Seattle-Tacoma International Airport (SEA), you should get to the airport at least 2h ahead of your flight’s departure time. Doing so gives you adequate time to go through the airport’s checkpoints. Severally, travelers have missed their flights at this airport after failing to go through the airport’s security checkpoints in time for their flights. If you reach the airport as early as advised, you’ll be able to avoid finding yourself in a similar position.
  • To travel from downtown Seattle to SEA, you can board a bus, train, or taxi. If you want to travel as quickly as you can from where you are in downtown Seattle to the airport, you should board a taxi, while if you want to travel as cheaply as you can, you should board a bus. On the other hand, if you want to balance speed and transportation costs, it is in your best interest to travel by train.
  • While waiting for your flight to Barcelona at SEA, you should consider visiting The Terminal Gateway Spa. Situated Airside, near Gate A5 on Level 5, this spa offers a full array of spa services. At this highly-rated spa, you’ll enjoy relaxing services without incurring a massive bill, as it provides all its services at competitive rates.
  • If you need any help at Josep Tarradellas Barcelona-El Prat Airport (BCN), you should head to one of the airport’s information desks. In Terminal 1, there are five such desks on the Airside and two on the Landside. On the other hand, in Terminal 2, there are two information desks on the Landside and three on the airside. These desks usually are in service 24/7.
  • In case you want to shower before leaving BCN, you can do so in one of the airport’s Air Rooms. Located on the 1st Floor of Terminal 1, these suites feature free toiletries and clean facilities.

Prefer to fly direct from Seattle to Barcelona?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Barcelona-El Prat.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Barcelona-El Prat Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Barcelona-El Prat

Tuesday

Delta

Delta

Thursday

Delta

Delta

Saturday

Delta

Delta

See more nonstop flights

Direct returns

Barcelona-El Prat to Seattle/Tacoma Intl

Wednesday

Delta

Delta

Friday

Delta

Delta

Sunday

Delta

Delta

See more nonstop flights

Reviews of the top airline flying from Seattle to Barcelona-El Prat

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Barcelona. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Barcelona-El Prat? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
LufthansaOverall score based on 7858 reviews
6.3Food
7.6Crew
7.0Boarding
6.5Entertainment
6.8Comfort
Airline reviews

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

2.0 MediocreAnonymous, Mar 2026
LAX - MUC
Read more Lufthansa reviews

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

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

Information on your arrival and departure airports

Seattle (SEA)
Barcelona-El Prat (BCN)