BCN - SEA

$271 Find Cheap Flights from Barcelona to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Barcelona to Seattle departing on 9/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

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

Save 20% or moreCompare multiple travel sites with one search.

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

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

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

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Barcelona to Seattle (BCN-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Barcelona to Seattle 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 Barcelona to Seattle

Thu, Sep 11 - Thu, Oct 2
 Logo
2:05 pm - 11:35 pmBCN-SEA
18h 30m1 stop
 Logo
7:00 pm - 12:05 amSEA-BCN
44h 05m2 stops
Thu, Sep 11 - Thu, Oct 2
 Logo
2:05 pm - 11:35 pmBCN-SEA
18h 30m1 stop
 Logo
7:00 pm - 12:05 amSEA-BCN
44h 05m2 stops
Thu, Sep 11 - Thu, Oct 2
United Airlines Logo
6:50 am - 6:36 pmBCN-SEA
20h 46m2 stops
United Airlines Logo
5:00 am - 7:50 amSEA-BCN
17h 50m2 stops
$660United Airlines
Find Deal
Thu, Sep 11 - Thu, Oct 2
United Airlines Logo
6:50 am - 2:16 pmBCN-SEA
16h 26m2 stops
United Airlines Logo
1:00 pm - 2:00 pmSEA-BCN
16h 00m1 stop
$661United Airlines
Find Deal
Thu, Sep 11 - Thu, Oct 2
Air Canada Logo
6:50 am - 2:16 pmBCN-SEA
16h 26m2 stops
Air Canada Logo
5:30 am - 7:50 amSEA-BCN
17h 20m2 stops
$673Air Canada
Find Deal
Mon, Aug 25 - Wed, Sep 3
British Airways Logo
7:10 pm - 11:10 amBCN-SEA
25h 00m1 stop
British Airways Logo
8:20 pm - 8:30 pmSEA-BCN
15h 10m1 stop
$680British Airways
Find Deal
Mon, Aug 25 - Sat, Sep 6
British Airways Logo
7:10 pm - 11:10 amBCN-SEA
25h 00m1 stop
British Airways Logo
8:20 pm - 6:25 pmSEA-BCN
13h 05m1 stop
$697British Airways
Find Deal
Wed, Jul 2 - Wed, Sep 17
Air Canada Logo
6:50 am - 8:41 pmBCN-SEA
22h 51m2 stops
Air Canada Logo
7:15 pm - 7:50 amSEA-BCN
27h 35m2 stops
$788Air Canada
Find Deal
Tue, Jul 1 - Fri, Sep 19
Delta Logo
11:05 am - 3:50 pmBCN-SEA
13h 45m1 stop
Delta Logo
7:20 am - 10:20 amSEA-BCN
18h 00m2 stops
$995Delta
Find Deal
Thu, Aug 7 - Sat, Aug 30
Delta Logo
6:20 am - 6:25 pmBCN-SEA
21h 05m2 stops
Delta Logo
6:40 pm - 5:10 pmSEA-BCN
13h 30m1 stop
$996Delta
Find Deal
Useful Info

KAYAK's insights & trends for Barcelona to Seattle flights

Get data-powered insights and trends into flights from Barcelona to Seattle 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 Barcelona to Seattle?

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

For Barcelona to Seattle, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Seattle back to Barcelona, the best deals are generally found on Monday, with Thursday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Barcelona-El Prat Airport to Seattle, 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 Barcelona-El Prat Airport to Seattle is March, where tickets cost $708 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $1,037 and $1,024 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Barcelona-El Prat Airport to Seattle, 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 Barcelona-El Prat Airport to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonApril
High seasonJuly
Cheapest flight$271
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 19% increase in price.
Flight from Barcelona to Seattle

When to book flights from Barcelona to Seattle

Are your dates flexible? Find out the best times to travel from Barcelona to Seattle 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 Barcelona to Seattle flights

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

    In the last 3 days, the lowest price for a flight from Barcelona-El Prat Airport to Seattle was $271 for a one-way ticket and $561 for a round-trip.

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

    A passport is required to fly from Barcelona to Seattle.

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

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

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

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

  • Which airline alliances offer flights from Barcelona to Seattle?

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

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

    The two airlines most popular with KAYAK users for flights from Barcelona to Seattle are Delta and British Airways. With an average price for the route of $801 and an overall rating of 8.0, Delta is the most popular choice. British Airways is also a great choice for the route, with an average price of $1,019 and an overall rating of 6.6.

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

    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 Barcelona to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Barcelona 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 Barcelona to Seattle?

    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 Seattle with an airline and back to Barcelona with another airline. Booking your flights between Barcelona and SEA 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 Barcelona to Seattle?

    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 Seattle from Barcelona up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Barcelona to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Barcelona to Seattle. 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 Barcelona to Seattle? 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 7964 reviews
8.2Boarding
7.9Entertainment
7.3Food
8.5Crew
7.9Comfort
Airline reviews

I like for how they process during check in. It was very smoothly.

10.0 ExcellentAbdulla, Jun 2025CMH - JFK
Read more Delta reviews

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This portion of the flight was through Indigo. A local carrier. So all economy seating. No real service some refreshments for purchase standard economy stuff.

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

It was not Air France but Air Europa. But confusion over our checked luggage. Whether it was checked all the way to Tenerife or not. It was not. Had to line up again in Departures. At least our Sky Priority was honoured. Flight was fine.

My wife and I had a row to ourselves after moving seats. There were no TVs and you had to buy food. So we did nothing but had a quick nap. Flight was fine.

The male attended that served are section was a snob. He did not answer my call light when my wine spilled all over the floor. I did not push it again or drew his attention to it. He just ignored the call light when he came to give us our meal, serving the people behind us first. I did not push it again or drew his attention to it to see his reaction. It was so obvious that he was ignoring us. We were in premium economy!

The plane was old Only 3 bathrooms available for economy The entertainment was old and the selection was poor

Georgian Airways check in staff initially denied us, because they thought passengers required transit visas to transfer on connecting flights. This required 70 minutes for them to call multiple people to confirm how transfers worked. They did not apologize once accepting our check in. Onboard, the four hour flight gave stale bread with spam slices as lunch. The only included drinks were still or sparkling water.

I did not get my baggage at my final destination..poor coordination with connecting flights with partner airlines (Saudi airways). Also the food was very mediocre.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

I thought we were screwed having to pay an additional $300 to pick our seats. My wife and I think it’s important to sit together on long flights and British Airlines use’s that against us charging over $300 on top of an already high fares. In the future, I’ll try to avoid using British Airlines, and KAYAK and stick to American or United.

Yet again BA flight was delayed. Only one delayed. No updates from ground staff. Plane was dirty and staff were disinterested.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.