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SEA - BCN

$268 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 7/23. 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
Tue 6/11
Tue 6/18

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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 42,369,914 times on KAYAK, and here is why:

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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
6:45 pm - 10:25 pmSEA-BCN
18h 40m1 stop
10:00 am - 4:45 pmBCN-SEA
15h 45m1 stop
$622Iberia
Find Deal
Tue, Nov 5 - Tue, Nov 19
6:45 pm - 6:00 pmSEA-BCN
14h 15m1 stop
1:30 pm - 9:43 pmBCN-SEA
17h 13m1 stop
$643British Airways
Find Deal
Mon, Nov 4 - Tue, Nov 12
1:39 pm - 4:30 pmSEA-BCN
17h 51m2 stops
1:30 pm - 9:43 pmBCN-SEA
17h 13m1 stop
$648British Airways
Find Deal
Wed, Nov 6 - Wed, Nov 13
1:40 pm - 10:35 pmSEA-BCN
23h 55m1 stop
7:35 pm - 11:25 amBCN-SEA
24h 50m1 stop
$649British Airways
Find Deal
Sun, Oct 20 - Mon, Nov 11
11:45 pm - 8:40 amSEA-BCN
23h 55m1 stop
10:15 am - 7:23 pmBCN-SEA
18h 08m1 stop
$650Delta
Find Deal
Sun, Nov 3 - Thu, Nov 14
8:00 am - 8:20 amSEA-BCN
15h 20m1 stop
11:00 am - 9:17 pmBCN-SEA
19h 17m2 stops
$654United Airlines
Find Deal
Sun, Nov 3 - Tue, Nov 12
6:31 am - 9:00 amSEA-BCN
17h 29m2 stops
9:10 am - 5:05 pmBCN-SEA
16h 55m1 stop
$661United Airlines
Find Deal
Mon, Nov 4 - Tue, Nov 12
6:50 pm - 10:55 pmSEA-BCN
19h 05m1 stop
6:50 am - 12:00 pmBCN-SEA
14h 10m1 stop
$761Lufthansa
Find Deal
Sun, Nov 3 - Mon, Nov 11
10:55 pm - 6:05 amSEA-BCN
22h 10m1 stop
6:05 am - 12:20 pmBCN-SEA
15h 15m1 stop
$823Delta
Find Deal
Sat, Oct 5 - Thu, Nov 7
6:45 pm - 10:20 pmSEA-BCN
18h 35m1 stop
11:05 am - 5:01 pmBCN-SEA
14h 56m1 stop
$897Aer Lingus
Find Deal
Fri, Oct 11 - Fri, Oct 25

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 $585 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,322 and $1,270 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 4 days before departure. For the absolute cheapest price, our data suggests you should book 23 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 ($268) and Turkish Airlines ($514), and the lowest round-trip tickets were found on Iberia ($622) and British Airways ($643).

Good to know

Low season

January

High season

September

Cheapest flight

$268
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 2% 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 3 days, the lowest price for a flight from Seattle to Barcelona-El Prat Airport was $268 for a one-way ticket and $622 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 $1,084 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 $1,024 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 10745 reviews
7.4Food
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
Airline reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

10.0 ExcellentSash, May 2024SEA - HNL
Read more about Delta reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

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.

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

Excellent apart from transport to actual plane 10 minutes from the actual gate , walking out in the tarmac in the rain and having to climb stairs to enter while holding luggage.

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

The flight was half full and I presume that the next few days are even less busy not sure why they are still charging a premium to change a flight.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

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!!!

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

Very nice flight, easy connections in Keflavík, and friendly crew.

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.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our luggage in Heathrow. Showed up 3 days into a 7 day vacation. Very inconvenient and disappointing!!

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

Our luggage is missing. We are at the Hotel Gran Via in Barcelona

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

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.
7/23Tue
1 stopWestJet
20h 25mSEA-BCN
$268
8/1Thu
2 stopsWestJet
35h 55mSEA-BCN
$276
7/24Wed
1 stopWestJet
32h 50mSEA-BCN
$288
8/25Sun
1 stopTurkish Airlines
37h 55mSEA-BCN
$514
9/6Fri
1 stopTurkish Airlines
33h 00mSEA-BCN
$604
7/1Mon
2 stopsUnited Airlines
22h 50mSEA-BCN
$875
7/1Mon
1 stopUnited Airlines
27h 15mSEA-BCN
$900
7/23Tue
1 stopAmerican Airlines
25h 46mSEA-BCN
$935
6/4Tue
2 stopsAmerican Airlines
26h 45mSEA-BCN
$1,380
9/19Thu
1 stopIcelandair
34h 45mSEA-BCN
$1,990

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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.
5/15Wed
multi-stop
20h 50mSEA-BCN
5/17Fri
multi-stop
20h 19mBCN-SEA
$1,060
5/15Wed
multi-stop
22h 40mSEA-BCN
5/17Fri
multi-stop
17h 00mBCN-SEA
$1,080
5/16Thu
multi-stop
49h 48mSEA-BCN
5/27Mon
multi-stop
49h 50mBCN-SEA
$1,130
5/16Thu
multi-stopTurkish Airlines
37h 55mSEA-BCN
5/27Mon
multi-stopTurkish Airlines
30h 45mBCN-SEA
$1,233
5/13Mon
multi-stopTurkish Airlines
33h 00mSEA-BCN
5/20Mon
multi-stopTurkish Airlines
30h 45mBCN-SEA
$1,242
5/16Thu
multi-stop
49h 48mSEA-BCN
5/27Mon
multi-stop
23h 16mBCN-SEA
$1,248
5/15Wed
multi-stopUnited Airlines
20h 30mSEA-BCN
5/26Sun
multi-stopUnited Airlines
36h 05mBCN-SEA
$1,554
5/16Thu
multi-stopUnited Airlines
20h 30mSEA-BCN
5/27Mon
multi-stopUnited Airlines
33h 40mBCN-SEA
$1,604
5/13Mon
multi-stopAmerican Airlines
17h 55mSEA-BCN
5/20Mon
multi-stopAmerican Airlines
21h 01mBCN-SEA
$2,172
5/15Wed
multi-stopAmerican Airlines
25h 45mSEA-BCN
5/27Mon
multi-stopAmerican Airlines
29h 40mBCN-SEA
$2,335

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Seattle - Barcelona Flights

Departure:

Seattle (undefined)United States

Destination:

Barcelona (BCN)Spain

Return flight deals:

Barcelona - Seattle

Cabin classes: