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Flights from Seattle to Barcelona
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Find cheap one-way flights from Seattle to Barcelona starting at US$258.

Discover our range of affordable one-way and round-trip flights from Seattle to Barcelona and kick-start your next adventure today!

  • One way
  • Round-trip
      • SEA13:58
        18h 37m
        1 stop
        BCN17:35
        Tue, Jan 28|Seattle - Barcelona|Frontier Airlines
        US$258US$401
        36% OFF
        36% OFF
        US$401US$258

        Choose Frontier Airlines flights from Seattle to Barcelona.The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Tue, Jan 28, arriving at Barcelona Airport.One-way Prices start from US$258 including taxes and charges.

      • SEA13:44
        18h 51m
        1 stop
        BCN17:35
        Tue, Jan 28|Seattle - Barcelona|Alaska Airlines
        US$282US$401
        30% OFF
        30% OFF
        US$401US$282

        Choose Alaska Airlines flights from Seattle to Barcelona.The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Jan 28, arriving at Barcelona Airport.One-way Prices start from US$282 including taxes and charges.

      • SEA06:10
        26h 25m
        1 stop
        BCN17:35
        Tue, Jan 28|Seattle - Barcelona|United Airlines
        US$322US$401
        20% OFF
        20% OFF
        US$401US$322

        Choose United Airlines flights from Seattle to Barcelona.The one-way connecting flight with United Airlines departs from Seattle-Tacoma International Airport on Tue, Jan 28, arriving at Barcelona Airport.One-way Prices start from US$322 including taxes and charges.

      • SEA13:55
        17h 20m
        1 stop
        BCN16:15
        Sun, Feb 2|Seattle - Barcelona|Frontier Airlines
        US$334
        US$334

        Choose Frontier Airlines flights from Seattle to Barcelona.The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Sun, Feb 2, arriving at Barcelona Airport.One-way Prices start from US$334 including taxes and charges.

      • SEA07:55
        19h 40m
        1 stop
        BCN12:35
        Tue, Feb 11|Seattle - Barcelona|Alaska Airlines
        US$335
        US$335

        Choose Alaska Airlines flights from Seattle to Barcelona.The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Feb 11, arriving at Barcelona Airport.One-way Prices start from US$335 including taxes and charges.

      • SEA08:26
        18h 24m
        1 stop
        BCN11:50
        Sat, Feb 1|Seattle - Barcelona|Alaska Airlines
        US$337
        US$337

        Choose Alaska Airlines flights from Seattle to Barcelona.The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Sat, Feb 1, arriving at Barcelona Airport.One-way Prices start from US$337 including taxes and charges.

      • SEA08:26
        18h 24m
        1 stop
        BCN11:50
        Sat, Jan 25|Seattle - Barcelona|Alaska Airlines
        US$342
        US$342

        Choose Alaska Airlines flights from Seattle to Barcelona.The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Sat, Jan 25, arriving at Barcelona Airport.One-way Prices start from US$342 including taxes and charges.

      • SEA08:26
        19h 9m
        1 stop
        BCN12:35
        Thu, Jan 23|Seattle - Barcelona|Alaska Airlines
        US$345
        US$345

        Choose Alaska Airlines flights from Seattle to Barcelona.The one-way connecting flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 23, arriving at Barcelona Airport.One-way Prices start from US$345 including taxes and charges.

      • SEA13:58
        17h 17m
        1 stop
        BCN16:15
        Thu, Feb 6|Seattle - Barcelona|Frontier Airlines
        US$351
        US$351

        Choose Frontier Airlines flights from Seattle to Barcelona.The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Feb 6, arriving at Barcelona Airport.One-way Prices start from US$351 including taxes and charges.

      • SEA07:30
        20h 5m
        1 stop
        BCN12:35
        Tue, Jan 14|Seattle - Barcelona|Delta Air Lines
        US$352
        US$352

        Choose Delta Air Lines flights from Seattle to Barcelona.The one-way connecting flight with Delta Air Lines departs from Seattle-Tacoma International Airport on Tue, Jan 14, arriving at Barcelona Airport.One-way Prices start from US$352 including taxes and charges.

      • SEA01:00 pm
        3h 5m
        Nonstop
        BCN02:00 pm
        Sun, Jan 12|Seattle - Barcelona|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Seattle to Barcelona?

Explore the best time to buy affordable tickets to Barcelona with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Cheapest airlines flights from Seattle to Barcelona

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Seattle to Barcelona.

Icelandair
From US$253
WestJet
From US$256
Frontier Airlines
From US$258
United Airlines
From US$275
Alaska Airlines
From US$282
Air Canada
From US$306
British Airways
From US$319
Lufthansa
From US$328
Delta Air Lines
From US$352
Virgin Atlantic
From US$355

Find more flights and airlines

Find cheap flights from Seattle to Barcelona by different airports

There are various non-direct routes from Seattle to Barcelona which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Icelandair
    SEA
    14:35
    44h 35m
    2 transfer
    BCN
    20:10
    Seattle-Tacoma International Airport - Barcelona Airport
    Mon, Jan 20Icelandair
    US$253
  • Icelandair
    SEA
    14:35
    44h 35m
    2 transfer
    BCN
    20:10
    Seattle-Tacoma International Airport - Barcelona Airport
    Mon, Jan 20Icelandair
    US$253
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Seattle (SEA) to Barcelona (BCN) the cheapest?

    Airlines adjust prices for flights from Seattle to Barcelona based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seattle (SEA) to Barcelona (BCN) cost?

    According to Trip.com's data, the lowest price is around $1,124.

How to find a cheap flight from Seattle to Barcelona

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Seattle to Barcelona Flight Information

Cheapest nonstop flight price$257
Off-season for travelOctober
Peak season for travelMarch
Flight distance8,722.43 km
Popular airlineIcelandair

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