Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

SEA - BCN

$254 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 departing on 8/6. 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
0 bags
Sun 5/26
Sun 6/2

Search hundreds of travel sites at once for deals on flights to Barcelona

 
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.
In the last 7 days travelers have searched 44,335,567 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
3:50 pm - 2:40 pmSEA-BCN
13h 50m1 stop
3:45 pm - 5:55 pmBCN-SEA
35h 10m1 stop
$627Icelandair
Find Deal
Sun, Sep 29 - Mon, Oct 7
3:50 pm - 2:40 pmSEA-BCN
13h 50m1 stop
11:45 am - 5:00 pmBCN-SEA
14h 15m1 stop
$634Icelandair
Find Deal
Sun, Oct 20 - Sun, Nov 3
6:55 pm - 2:40 pmSEA-BCN
34h 45m1 stop
3:45 pm - 5:55 pmBCN-SEA
35h 10m1 stop
$640Icelandair
Find Deal
Sat, Sep 28 - Mon, Oct 7
6:45 am - 12:45 pmSEA-BCN
21h 00m2 stops
10:00 am - 12:00 pmBCN-SEA
35h 00m1 stop
$777United Airlines
Find Deal
Sun, Sep 22 - Mon, Nov 4
11:59 pm - 8:20 amSEA-BCN
23h 21m2 stops
10:00 am - 12:00 pmBCN-SEA
35h 00m1 stop
$781United Airlines
Find Deal
Sun, Sep 22 - Mon, Nov 4
7:20 am - 9:10 amSEA-BCN
16h 50m1 stop
1:20 pm - 10:15 amBCN-SEA
29h 55m1 stop
$836Delta
Find Deal
Wed, Aug 7 - Mon, Aug 19
1:10 pm - 9:40 amSEA-BCN
35h 30m2 stops
6:20 pm - 5:05 pmBCN-SEA
31h 45m1 stop
$840Lufthansa
Find Deal
Sun, Oct 20 - Mon, Nov 4
3:10 pm - 10:25 amSEA-BCN
34h 15m2 stops
6:20 pm - 5:05 pmBCN-SEA
31h 45m1 stop
$846Lufthansa
Find Deal
Mon, Oct 21 - Mon, Nov 4
10:55 pm - 6:05 amSEA-BCN
22h 10m1 stop
1:20 pm - 10:15 amBCN-SEA
29h 55m1 stop
$885Delta
Find Deal
Fri, Aug 9 - Mon, Aug 19
1:40 pm - 11:55 amSEA-BCN
13h 15m1 stop
9:15 pm - 11:35 amBCN-SEA
23h 20m1 stop
$932British Airways
Find Deal
Sun, Sep 22 - Sun, Oct 6

Flights from Seattle to Barcelona - Travel Insights & Trends

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.

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

The average price of all 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 Wednesday and more expensive on a Friday. On your return trip to Seattle, you should consider flying back on a Tuesday, and avoid Sundays 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 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 November, where tickets cost $601 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,562 and $1,452 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Seattle to Barcelona-El Prat Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 67 days before departure.

Which airlines provide the cheapest flights from Seattle to Barcelona?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Barcelona from Seattle were found on WestJet ($254) and Icelandair ($556), and the lowest round-trip tickets were found on Icelandair ($627) and WestJet ($720).

Good to know

Low season

January

High season

November

Cheapest flight

$254
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 42% lower on average.
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 3 days, the lowest price for a flight from Seattle to Barcelona-El Prat Airport was $254 for a one-way ticket and $627 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?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Barcelona?

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

  • What is the most popular layover when flying to Barcelona from Seattle?

    London is the most popular layover city among KAYAK users traveling from Seattle to Barcelona.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Barcelona are Delta and United Airlines. With an average price for the route of $1,085 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,048 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.

See more FAQs

Top tips for finding a cheap flight from SEA to Barcelona

  • 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.
See more tips

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.
8.0
DeltaOverall score based on 10966 reviews
7.9comfort
8.2boarding
8.6crew
8.0entertainment
7.4food
Airline reviews

Had a broken tray in business class. Crew just shrugged it off.

2.0 MediocreShiva, Apr 2024SEA - SFO
Read more about Delta reviews

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Old cabine without flat bed in business for a 12 hour flight is not acceptable

Did not find the wheelchair that supposed to assist and went to a long queue for transit security chk which was very slow and boarding desk wanted to close counter although that they knew that I am minutes away because of their mistake of not providing the wheelchair.

Boarding was smooth and on time. The seat was comfortable and the entertainment worked. Staff were gracious.

Good aorcraft 777 but Worst food ever Breakfast was a bû’with matonnaise… Staff was nice but invisible most of the flight

Business class in the second leg - CDG-EVN was a disaster.

Everything went smoothly with Air France. There was a delay in departure which seemed to relate to the immigration services being short staffed.

worst experience ever i choose my seat in advance and also have my seat selected in my boarding and the they told me that my seat has been changed without notify me

No birding was given for next trip on same carrier, food was very moderate.

We transited through Chad and what was supposed to be a 1hr 20 minutes transit time lasted over 4hrs. We didn't get regular updates until we complained. After a 10hr flight from Paris no form of refreshment given and finally arrived Abuja over 6hrs later and none of my bags came

Lost luggage, 2 bags were badly damaged and one of the bags came open.

I loved how they arrange boarding (starting with people seated in back and moving to the front). Flight crew was very polite and welcoming. Seating was ok, I felt like there was enough leg space however it is noticeable when the passenger in front of you sets their seat back.

Nice to be on a flight that wasn't fully booked so there were only two of us in the three seat row.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

Aer Lingus doesn't have plug ins for devices at each seat. They also did not give me a dairy free meal as requested and confirmed by staff. It was as if I had not requested anything. Otherwise, they were great!

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

All OK. Food, best bring your own. Even a BigMac will be better.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

Great hospitality and service! Seats are better cushioned then some

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Pros: "I liked the northern lights look after boarding upon introduction of the captain and crew members. Everyone was super personal and uninformed looked great. The best part was when they started boarding from the last row, which is the most logical and efficient way to do it"
Pros: "Got assisted to the plane by airport staff as I was in a wheelchair"
Cons: "Food on board was awful. Ordered hamburger but not availabe having already pre paid. Pizza was poor quality and had no taste. Range of food disappointing"

Excellent! Great flight attendants, good food (in business class, at least), very comfortable. Touchscreen and remote wasn’t great.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

We paid to have overhead carry-on baggage. When we got to the gate we were told that our carry on bags would need to be checked and go below because the flight was full. Notably we were nowhere near the last people to board and about 30 other passengers also had to check their carry-on bags. Other than that the flight was fine.

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

Crew were very friendly and helpful. They explained to us in detail the delay in our takeoff due to the storm that rolled in from Belfast and did their best to make up the time. Always great to fly BA!

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Book cheap flights from Seattle to Barcelona

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Barcelona found on KAYAK in the last 72 hours.
8/6Tue
1 stopWestJet
16h 20mSEA-BCN
$254
8/13Tue
1 stopWestJet
20h 25mSEA-BCN
$256
8/6Tue
1 stopWestJet
20h 25mSEA-BCN
$268
8/8Thu
1 stopWestJet
16h 00mSEA-BCN
$273
8/10Sat
1 stopIcelandair
30h 40mSEA-BCN
$556
8/10Sat
1 stopIcelandair
30h 40mSEA-BCN
$569
10/7Mon
1 stopAer Lingus
30h 40mSEA-BCN
$717
7/23Tue
2 stopsUnited Airlines
22h 50mSEA-BCN
$762
8/5Mon
2 stopsUnited Airlines
23h 30mSEA-BCN
$768
10/16Wed
1 stopBritish Airways
15h 50mSEA-BCN
$778

Search by stops

Search by airline

Search by price

Last minute flights from Seattle to Barcelona

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Barcelona that are departing in the next 10 days.
5/1Wed
multi-stopTurkish Airlines
32h 55mSEA-BCN
5/9Thu
multi-stopTurkish Airlines
38h 10mBCN-SEA
$804
4/28Sun
multi-stopTurkish Airlines
37h 55mSEA-BCN
5/14Tue
multi-stopTurkish Airlines
36h 10mBCN-SEA
$810
4/28Sun
multi-stop
14h 15mSEA-BCN
5/10Fri
multi-stop
31h 31mBCN-SEA
$820
4/28Sun
multi-stopAer Lingus
18h 35mSEA-BCN
5/14Tue
multi-stopAer Lingus
27h 01mBCN-SEA
$1,255
4/28Sun
multi-stopUnited Airlines
19h 00mSEA-BCN
5/14Tue
multi-stopUnited Airlines
20h 08mBCN-SEA
$1,472
5/1Wed
multi-stopUnited Airlines
15h 14mSEA-BCN
5/9Thu
multi-stopUnited Airlines
25h 03mBCN-SEA
$1,478
4/29Mon
multi-stopAmerican Airlines
26h 01mSEA-BCN
5/5Sun
multi-stopAmerican Airlines
19h 21mBCN-SEA
$3,305
4/30Tue
multi-stopIcelandair
13h 50mSEA-BCN
5/8Wed
multi-stopIcelandair
37h 39mBCN-SEA
$3,750
4/30Tue
multi-stopIcelandair
13h 50mSEA-BCN
5/8Wed
multi-stopIcelandair
34h 55mBCN-SEA
$3,830
4/29Mon
multi-stopAmerican Airlines
26h 01mSEA-BCN
5/8Wed
multi-stopAmerican Airlines
20h 10mBCN-SEA
$7,705

Search by stops

Search by airline

Search by price

Seattle - Barcelona Flights

Departure:

Seattle (SEA)United States

Destination:

Barcelona (BCN)Spain

Return flight deals:

Barcelona - Seattle

Cabin classes: