$280+ Cheap flights from Seattle (SEA) to Barcelona
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Jun 16 — Jun 231
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Barcelona with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Barcelona are usually found in January or February, booked 47 days in advance, depart on a Friday or Monday and return on a Monday
Cheap flight deals from Seattle to Barcelona
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to BarcelonaExplore the most affordable flight options available from Seattle to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 17, 2026.
Explore the most affordable flight options available from Seattle to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Mon 9/1410:15 am
BCN
- SEA
1 stop14h 55m
Condor
Deal found 5/12![Condor logo]()
$734
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$735
This oojo deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Wed 6/175:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 5/12![Condor logo]()
$739
This FlightHub deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:45 pm
SEA
- BCN
2 stops39h 25m
Scandinavian Airlines
Sat 9/127:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 5/12![Scandinavian Airlines logo]()
$740
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$742
This Mytrip deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/23:40 pm
SEA
- BCN
2 stops20h 20m
Multiple Airlines
Mon 8/247:25 pm
BCN
- SEA
3 stops34h 35m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$750
This FlightHub deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:20 am
SEA
- BCN
2 stops26h 00m
Scandinavian Airlines
Tue 11/1012:25 pm
BCN
- SEA
2 stops42h 46m
Scandinavian Airlines
Deal found 5/12![Scandinavian Airlines logo]()
$751
This Cheapflightsfares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:05 pm
SEA
- BCN
1 stop13h 00m
Condor
Fri 8/2810:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 5/13![Condor logo]()
$752
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:05 pm
SEA
- BCN
1 stop13h 00m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$753
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Mon 6/225:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Deal found 5/13![Condor logo]()
$756
This CheapOair deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:59 am
SEA
- BCN
2 stops27h 11m
Multiple Airlines
Tue 10/138:00 am
BCN
- SEA
1 stop16h 40m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$760
This Cheapflightsfares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Wed 5/2010:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$763
Best flights from Seattle to BarcelonaDiscover carefully curated flight deals from Seattle to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
Discover carefully curated flight deals from Seattle to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 17, 2026.
This Condor deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Mon 6/225:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Deal found 5/13![Condor logo]()
$793
This Condor deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:02 pm
SEA
- BCN
2 stops25h 08m
Multiple Airlines
Wed 10/1410:25 am
BCN
- SEA
1 stop14h 15m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$810
This Delta deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:30 pm
SEA
- BCN
1 stop16h 20m
Delta
Wed 7/151:20 pm
BCN
- SEA
Nonstop11h 15m
Delta
Deal found 5/16![Delta logo]()
$965
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:05 am
SEA
- BCN
2 stops21h 10m
United Airlines
Fri 7/247:55 am
BCN
- SEA
1 stop18h 04m
United Airlines
Deal found 5/14![United Airlines logo]()
$971
This Condor deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:44 am
SEA
- BCN
2 stops26h 26m
Multiple Airlines
Sun 10/1110:25 am
BCN
- SEA
1 stop14h 15m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$810
This Condor deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Wed 8/268:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 5/16![Condor logo]()
$858
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/151:30 pm
SEA
- BCN
1 stop17h 05m
Delta
Fri 7/241:20 pm
BCN
- SEA
Nonstop11h 15m
Delta
Deal found 5/14![Delta logo]()
$965
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:02 am
SEA
- BCN
2 stops17h 13m
United Airlines
Thu 7/306:40 am
BCN
- SEA
2 stops16h 42m
United Airlines
Deal found 5/16![United Airlines logo]()
$972
This Condor deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:40 pm
SEA
- BCN
1 stop13h 25m
Condor
Sun 8/238:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 5/15![Condor logo]()
$905
This Condor deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:55 am
SEA
- BCN
2 stops25h 15m
Multiple Airlines
Thu 10/158:00 am
BCN
- SEA
2 stops20h 56m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$940
This Condor deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:40 pm
SEA
- BCN
1 stop13h 25m
Condor
Sat 8/225:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Deal found 5/16![Condor logo]()
$926
This KLM deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/121:30 pm
SEA
- BCN
1 stop16h 20m
Multiple Airlines
Fri 8/211:20 pm
BCN
- SEA
Nonstop11h 25m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$965
This Iberia deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/208:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Tue 6/309:20 am
REU
- SEA
2 stops35h 15m
Iberia
Deal found 5/16![Iberia logo]()
$2,706
This Iberia deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/181:30 pm
SEA
- REU
2 stops34h 15m
Iberia
Tue 6/309:20 am
REU
- SEA
2 stops35h 15m
Iberia
Deal found 5/16![Iberia logo]()
$3,575
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated May 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated May 17, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 pm
SEA
- BCN
1 stop19h 10m
Condor
Wed 5/208:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 5/16![Condor logo]()
$789
This Condor deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Thu 5/288:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 5/14![Condor logo]()
$769
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Wed 6/35:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 5/14![Condor logo]()
$771
This Condor deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Fri 6/58:00 am
BCN
- SEA
2 stops24h 39m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$780
This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/273:40 pm
SEA
- BCN
2 stops24h 10m
Multiple Airlines
Sat 5/309:05 am
BCN
- SEA
3 stops37h 40m
Multiple Airlines
Deal found 5/13![Multiple Airlines logo]()
$774
This oojo deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Wed 6/175:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 5/12![Condor logo]()
$739
This Mytrip deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/23:40 pm
SEA
- BCN
2 stops22h 10m
Multiple Airlines
Wed 6/1710:00 am
BCN
- SEA
3 stops33h 07m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$768
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$742
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$735
This FlightHub deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Mon 6/225:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Deal found 5/13![Condor logo]()
$756
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:05 pm
SEA
- BCN
1 stop13h 00m
Condor
Tue 6/2310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 5/13![Condor logo]()
$753
This Iberia deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/208:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Tue 6/309:20 am
REU
- SEA
2 stops35h 15m
Iberia
Deal found 5/16![Iberia logo]()
$2,706
One-way flights from Seattle to BarcelonaSearch for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated May 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- BCN
2 stops40h 30m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$280
This Trip.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 pm
SEA
- BCN
2 stops20h 55m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:25 pm
SEA
- BCN
3 stops48h 25m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/61:30 pm
SEA
- BCN
3 stops41h 10m
Multiple Airlines
Deal found 5/16![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:40 pm
SEA
- BCN
2 stops24h 15m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/23:40 pm
SEA
- BCN
3 stops43h 40m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:25 pm
SEA
- BCN
2 stops54h 55m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:00 pm
SEA
- BCN
3 stops42h 20m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$317
Find flight deals from Seattle to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 17, 2026.
Round-trip from | $734 (Kiwi.com) |
|---|---|
One-way from | $280 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $818 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Barcelona that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 17, 2026.
Use the filters below to find and compare flights from Seattle to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 6/11
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Mon 6/22
5:00 pm-3:40 pm
1 stop31h 40m
$793
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 9/24
12:02 pm-10:10 pm
2 stops25h 08m
Barcelona-El Prat
Wed 10/14
10:25 am-3:40 pm
1 stop14h 15m
$810
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 10/1
10:44 am-10:10 pm
2 stops26h 26m
Barcelona-El Prat
Sun 10/11
10:25 am-3:40 pm
1 stop14h 15m
$810
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 8/11
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Wed 8/26
8:00 am-3:40 pm
1 stop16h 40m
$858
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 8/12
5:40 pm-4:05 pm
1 stop13h 25m
Barcelona-El Prat
Sun 8/23
8:00 am-3:40 pm
1 stop16h 40m
$905
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 8/12
5:40 pm-4:05 pm
1 stop13h 25m
Barcelona-El Prat
Sat 8/22
5:00 pm-3:40 pm
1 stop31h 40m
$926
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sat 10/3
11:55 am-10:10 pm
2 stops25h 15m
Barcelona-El Prat
Thu 10/15
8:00 am-7:56 pm
2 stops20h 56m
$940
Quickest round-trip
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 7/7
1:30 pm-2:50 pm
1 stop16h 20m
Barcelona-El Prat
Wed 7/15
1:20 pm-3:35 pm
Nonstop11h 15m
$965
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 7/15
1:30 pm-3:35 pm
1 stop17h 05m
Barcelona-El Prat
Fri 7/24
1:20 pm-3:35 pm
Nonstop11h 15m
$965
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 8/12
1:30 pm-2:50 pm
1 stop16h 20m
Barcelona-El Prat
Fri 8/21
1:20 pm-3:45 pm
Nonstop11h 25m
$965
Showing 1-10 of 26 resultsSorted by cheapest first
Best time to book a flight from Seattle to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Seattle with our price prediction graph.
SEA-S37
SEA-BCN
SEA-REU
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Barcelona
SEA-S37
SEA-BCN
SEA-REU
How far ahead should I book a flight from Seattle to Barcelona?
To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $351). Flying from Seattle to Barcelona in June is currently the most expensive (average of $653). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to BCN?
Find hourly flight availability from Seattle to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 17, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Barcelona as you normally would.
How much does it cost to fly round-trip from Seattle to Barcelona?
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated May 17, 2026.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta,United Airlines, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Seattle to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Barcelona by cabin class
Find flights from Seattle to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Barcelona flights
Browse other Seattle and Barcelona flight options. Last updated on May 17, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on May 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Seattle to Barcelona
Discover the top 10 airlines that operate flights from Seattle to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$506 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$436 | Average$709 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$478 | Average$667 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$478 | Average$577 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$480 | Average$1,159 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$481 | Average$828 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$481 | Average$784 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$483 | Average$750 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$1,140 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$586 | Average$837 | FlexibilityNo cancel fee | On-time77% |