SEA - BCN

$191 Find Cheap Flights from Seattle to Barcelona - Compare and Save

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 departing on 8/24. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Barcelona.
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Everything you should know

Cheapest round-trip
$717
Typical prices: $938-$625
Condor
Thu 8/6Fri 8/28
SEA - BCN • 1 stop
Cheapest non-stop
$929
KLM
Tue 8/18Wed 8/26
SEA - BCN • Non-stop
Nonstop flights
3 days a week
Tue, Thu, Sat
You can fly direct with Delta. Average duration is 10h 35m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
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Top airlines
Cheapest • from $717 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $684 (round-trip)
Shortest trip • 12h 35m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 19% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 38% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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Start a new search
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We hope you love your trip to Barcelona!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Barcelona (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 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

Thu, Aug 6 - Fri, Aug 28
Condor Logo
6:05 pm - 10:10 pm
SEA
-
BCN
19h 05m
1 stop
Condor Logo
8:00 am - 4:00 pm
BCN
-
SEA
17h 00m
1 stop
$717Condor
Wed, Sep 2 - Thu, Sep 10
Multiple Airlines Logo
5:40 pm - 10:10 pm
SEA
-
BCN
19h 30m
1 stop
Multiple Airlines Logo
8:00 am - 6:51 pm
BCN
-
SEA
19h 51m
2 stops
$720Multiple Airlines
Sun, Sep 13 - Mon, Sep 21
Multiple Airlines Logo
5:40 pm - 10:10 pm
SEA
-
BCN
19h 30m
1 stop
Multiple Airlines Logo
8:00 am - 11:12 pm
BCN
-
SEA
24h 12m
2 stops
$721Multiple Airlines
Sun, Aug 16 - Mon, Aug 31
Condor Logo
5:40 pm - 10:10 pm
SEA
-
BCN
19h 30m
1 stop
Condor Logo
5:00 pm - 3:40 pm
BCN
-
SEA
31h 40m
1 stop
$722Condor
Mon, Sep 14 - Thu, Sep 24
Condor Logo
6:10 pm - 10:10 pm
SEA
-
BCN
19h 00m
1 stop
Condor Logo
10:15 am - 4:00 pm
BCN
-
SEA
14h 45m
1 stop
$728Condor
Sat, Aug 15 - Tue, Aug 25
Condor Logo
6:15 pm - 10:10 pm
SEA
-
BCN
18h 55m
1 stop
Condor Logo
10:25 am - 3:40 pm
BCN
-
SEA
14h 15m
1 stop
$733Condor
Sat, Sep 19 - Thu, Sep 24
Scandinavian Airlines Logo
3:55 pm - 9:45 am
SEA
-
BCN
32h 50m
1 stop
Scandinavian Airlines Logo
12:25 pm - 1:45 pm
BCN
-
SEA
34h 20m
1 stop
$735Scandinavian Airlines
Mon, Aug 17 - Tue, Oct 27
Multiple Airlines Logo
10:14 am - 4:00 pm
SEA
-
BCN
20h 46m
2 stops
Multiple Airlines Logo
10:15 am - 4:35 pm
BCN
-
SEA
14h 20m
1 stop
$736Multiple Airlines
Sun, Aug 30 - Sun, Sep 6
Condor Logo
5:40 pm - 4:00 pm
SEA
-
BCN
13h 20m
1 stop
Condor Logo
10:25 am - 3:40 pm
BCN
-
SEA
14h 15m
1 stop
$739Condor
Tue, Sep 15 - Thu, Sep 24
Condor Logo
6:05 pm - 10:10 pm
SEA
-
BCN
19h 05m
1 stop
Condor Logo
10:15 am - 4:00 pm
BCN
-
SEA
14h 45m
1 stop
$740Condor
Booking Insights

KAYAK's insights & trends for Seattle to Barcelona flights

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

How much is a round-trip flight from Seattle to Barcelona-El Prat Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Barcelona-El Prat Airport departing in August.

What’s the cheapest day of the week to fly from Seattle to Barcelona?

The average price of all round-trip flights from Seattle to Barcelona-El Prat Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Barcelona on a Friday and more expensive on a Thursday. On your return trip to Seattle, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

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 January, where tickets cost $480 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,187 and $1,071 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 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$191
Best time to beat the crowds but there is an average 38% increase in price.
Most popular time to fly with an average 1% increase in price.
Flight from Seattle to Barcelona

When to book flights from Seattle to Barcelona

Are your dates flexible? Find out the best times to travel from Seattle to Barcelona 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 5 days, the lowest price for a flight from Seattle to Barcelona-El Prat Airport was $191 for a one-way ticket and $717 for a round-trip.

  • Do I need a passport to fly between Seattle and Barcelona?

    Yes, you’ll need a passport to travel to Barcelona from Seattle.

  • 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Barcelona, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Barcelona?

    You can catch a nonstop flight from Seattle to Barcelona on Tuesday, Thursday, and Saturday.

  • Which is the best airline for flights from Seattle to Barcelona, Delta or Turkish Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Barcelona are Delta and Turkish Airlines. With an average price for the route of $1,132 and an overall rating of 7.8, Delta is the most popular choice. Turkish Airlines is also a great choice for the route, with an average price of $697 and an overall rating of 7.4.

  • 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 travelers 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. Booking your flights between Seattle and BCN can sometimes prove cheaper using this method.

  • 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

  • Looking for a cheap flight? 25% of our users found flights on this route for $458 or less one-way and $1,020 or less round-trip.
  • 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 direct flights

Direct returns

Barcelona-El Prat to Seattle/Tacoma Intl

Wednesday

Delta

Delta

Friday

Delta

Delta

Sunday

Delta

Delta

See more direct flights

Reviews of the top 5 airlines serving from Seattle to Barcelona

 
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? 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.
7.8
DeltaOverall score based on 8409 reviews
7.8Entertainment
8.5Crew
8.1Boarding
7.2Food
7.8Comfort
Airline reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

2.0 MediocreMargaret, Jun 2026
MSY - LGA
Read more Delta reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

The crew was attentive and personable. The plane was clean and the seats comfortable. It was an excellent trip!

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

Iceland Air severely damaged a checked bag. Additionally, the gate agent caused issues for many passengers who had standard-sized onboard bags that would have passed inspection by any other airline.

We sat in our seats on the tarmac for almost 3 hours due to storms. They would not give us water or a snack. We were to depart at 7.30 pm and it was about 10.30 when we took off. No dinner until much after that. Beef type noodle dish was terrible with about a teaspoon of beef in it. The breakfast sweet waffle with egg and sausage inside was horrible. An English muffin sandwich would have been much better. Food was the worst in all of our years of traveling the world.

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

They messed up my seat so I didn’t get the one I paid for

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

This is a very basic flight with no-frills. I just wish the seats were a little bit more comfortable.

Thanks to a delay of an hour of my flight to Philadelphia on American Airlines I missed my connecting flight to Amsterdam. On arrival at Philadelphia he crew on the delayed flight did not ask the passengers to let connecting passengers get off first and I arrived a few minutes after boarding was closed at the original time for the flight to AMS, this despite the fact that I had received a message from American Airlines that departure was delayed by 25 minutes. Overall very poor service, no effort from the part of American Airlines to accommodate the passenger, just rebook the flight for the next day.

It's hard to tell where to plug in electronics, and the port on my seat didn't work. Their entertainment system was down. Vegetarian food options were tasty. Friendly, helpful flight attendants.

Wonderful business class flight in a lovely new plane with an excellent crew

BA code for a Vueling flight. All god but the temperature in the plane (too hot when engine not running but otherwise ok)

Food options limited and quality wasn’t very good. I was I was in premium economy and the people in front of me pushed their seats back to fully reclined position which made it difficult for me. My seat wouldn’t recline at all. I suggest that BA restrict the recliner more. Also, the audio in my headset didn’t work unless I held it in all the time. Entertainment choices were good. Customer services is excellent. Thank you to BA team.

The luggage problem I previously mentioned was actually this flight

Late. And service was very slow - passengers sat for well over an hour with dirty trays etc surrounding them

Getting the boarding passes between the BA and AA apps was very clunky.

The plane was dirty the food was awful and the boarding process took too long

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

The flight was fine. The food was much better on the second flight. I have NEVER paid for a carry on bag on a zero economy flight booking. I'm very dissappointed about that, and will never fly Condor again.

Great crew. Food was pretty good. Seats are narrow and internet is expensive

This Condir premium economy is terrible. All it is is a few extra inches of legroom in an economy seat. British airways premium economy is the same as a first class domestic seat, wider with more recline. Plus the flights were all late to leave, arrive, etc. terrible day.

Absolutely the worst food I ever had on any flight. Half of passengers simply didn't eat their meals, as I noticed.

Food could be better. Service was just ok without any enthusiasm...

The breakfast snack was horrible. No nutrition value. I couldn't finish it. The main meal had no taste, no real vegetable, the brownie had no chocolate taste., I was not even sure what the salad consists off.

Breakfast was terrible. Sugary yogurt, inferior pastry, poor quality fruits. No protein.

Our connection in Frankfurt was the worst ever. No one from the airline or the airport seemed to be bothered to get us into our connecting flight on time! The procedures at the airport took us forever and we barely made it into our flight. If we had missed it, I’m sure we would’ve missed our cruise. Looks like everything is on autopilot and no one is interested in helping customers anymore especially us 69 year olds

Crew was very responsive to give soft drinks etc.. At Frankfurt Airport Special Assistance did a great job for us. The seat cushions were simply bad and not up to the mark for Premium Economy which we chose. All the cushions from Business to Economy were poor. Also, any snack besides lunch and breakfast, you have to purchase including chips and chocolate. It is simply cheap. I don't think I will fly Condor anytime soon

The short leg flight was fine. Crew and airport were nice to allow special assistance which helped.

Everything you need to know for your flight from Seattle to Barcelona

Information on your arrival and departure airports