$241+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Apr 16 — Apr 231
Round-trip
1 adult, Economy
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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 March 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 March 17, 2026.
This FlightHub deal was found by Cheapflights users on 3/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Fri 9/1810:25 am
BCN
- SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 3/15![Scandinavian Airlines logo]()
$505
This FlightHub deal was found by Cheapflights users on 3/12. 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 9/83:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Mon 10/510:35 am
BCN
- SEA
1 stop36h 10m
Scandinavian Airlines
Deal found 3/12![Scandinavian Airlines logo]()
$517
This oojo deal was found by Cheapflights users on 3/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:55 pm
SEA
- BCN
1 stop34h 40m
Scandinavian Airlines
Thu 9/2412:25 pm
BCN
- SEA
1 stop34h 20m
Scandinavian Airlines
Deal found 3/14![Scandinavian Airlines logo]()
$525
This Trip.com deal was found by Cheapflights users on 3/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Fri 9/47:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 3/13![Scandinavian Airlines logo]()
$529
This FlightHub deal was found by Cheapflights users on 3/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- BCN
1 stop32h 50m
Scandinavian Airlines
Fri 9/1810:25 am
BCN
- SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 3/14![Scandinavian Airlines logo]()
$535
This oojo deal was found by Cheapflights users on 3/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:55 pm
SEA
- BCN
1 stop32h 50m
Scandinavian Airlines
Sat 9/197:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 3/13![Scandinavian Airlines logo]()
$541
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/257:00 pm
SEA
- BCN
2 stops21h 15m
Multiple Airlines
Sun 5/33:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$552
This Trip.com deal was found by Cheapflights users on 3/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:00 pm
SEA
- BCN
2 stops20h 50m
Multiple Airlines
Wed 5/203:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$557
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sun 4/267:00 pm
SEA
- BCN
2 stops34h 40m
Multiple Airlines
Sun 5/33:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$563
This Iberia deal was found by Cheapflights users on 3/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:20 pm
SEA
- REU
2 stops52h 35m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 3/12![Iberia logo]()
$2,239
This Iberia deal was found by Cheapflights users on 3/11. 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 6/138:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Tue 6/239:15 am
REU
- SEA
2 stops35h 20m
Iberia
Deal found 3/11![Iberia logo]()
$2,601
This Iberia deal was found by Cheapflights users on 3/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/261:30 pm
SEA
- REU
2 stops34h 15m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 3/12![Iberia logo]()
$2,603
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 March 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 March 17, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 3/11. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:55 pm
SEA
- BCN
2 stops32h 50m
Scandinavian Airlines
Sun 9/209:45 am
BCN
- SEA
2 stops21h 32m
Scandinavian Airlines
Deal found 3/11![Scandinavian Airlines logo]()
$654
This Condor deal was found by Cheapflights users on 3/11. 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 8/176:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Fri 10/910:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 3/11![Condor logo]()
$707
This KLM deal was found by Cheapflights users on 3/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:40 pm
SEA
- BCN
1 stop13h 30m
Multiple Airlines
Fri 8/281:20 pm
BCN
- SEA
Nonstop11h 26m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$974
This Delta deal was found by Cheapflights users on 3/16. 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.
Sun 5/1711:00 pm
SEA
- BCN
1 stop24h 35m
Delta
Fri 5/291:20 pm
BCN
- SEA
Nonstop11h 13m
Delta
Deal found 3/16![Delta logo]()
$1,220
This Condor deal was found by Cheapflights users on 3/15. 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.
Tue 9/86:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Sun 10/188:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 3/15![Condor logo]()
$707
This Condor deal was found by Cheapflights users on 3/12. 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 8/16:15 pm
SEA
- BCN
1 stop18h 55m
Condor
Wed 8/1910:25 am
BCN
- SEA
2 stops39h 16m
Condor
Deal found 3/12![Condor logo]()
$901
This Scandinavian Airlines deal was found by Cheapflights users on 3/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:15 am
SEA
- BCN
2 stops25h 55m
Scandinavian Airlines
Fri 5/2910:25 am
BCN
- SEA
2 stops22h 30m
Scandinavian Airlines
Deal found 3/16![Scandinavian Airlines logo]()
$1,002
This Condor deal was found by Cheapflights users on 3/12. 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.
Mon 7/276:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Sat 8/225:00 pm
BCN
- SEA
2 stops51h 35m
Condor
Deal found 3/12![Condor logo]()
$908
This KLM deal was found by Cheapflights users on 3/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:40 pm
SEA
- BCN
1 stop16h 40m
Multiple Airlines
Sun 5/241:20 pm
BCN
- SEA
Nonstop11h 13m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$1,279
This KLM deal was found by Cheapflights users on 3/11. 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.
Fri 9/46:45 pm
SEA
- BCN
1 stop13h 25m
Multiple Airlines
Sun 9/201:20 pm
BCN
- SEA
Nonstop11h 39m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$1,300
This Iberia deal was found by Cheapflights users on 3/11. 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 6/138:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Sat 6/279:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 3/11![Iberia logo]()
$2,905
This KLM deal was found by Cheapflights users on 3/11. 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 5/136:40 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Wed 6/101:20 pm
BCN
- SEA
Nonstop11h 23m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$1,480
This Iberia deal was found by Cheapflights users on 3/11. 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.
Sun 6/141:30 pm
SEA
- REU
2 stops34h 15m
Iberia
Sat 6/279:15 am
REU
- SEA
2 stops35h 20m
Iberia
Deal found 3/11![Iberia logo]()
$3,224
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated March 17, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 3/14. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:10 pm
SEA
- BCN
1 stop30h 35m
Turkish Airlines
Mon 4/207:10 pm
BCN
- SEA
1 stop31h 05m
Turkish Airlines
Deal found 3/14![Turkish Airlines logo]()
$620
This Mytrip deal was found by Cheapflights users on 3/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
- BCN
2 stops23h 19m
Multiple Airlines
Tue 4/218:10 am
BCN
- SEA
2 stops21h 30m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$567
This Mytrip deal was found by Cheapflights users on 3/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:40 pm
SEA
- BCN
2 stops23h 19m
Multiple Airlines
Mon 4/208:35 pm
BCN
- SEA
3 stops33h 05m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$612
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/257:00 pm
SEA
- BCN
2 stops21h 15m
Multiple Airlines
Sun 5/33:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$552
This Mytrip deal was found by Cheapflights users on 3/13. 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.
Sat 4/257:00 pm
SEA
- BCN
2 stops21h 15m
Multiple Airlines
Sat 5/29:15 am
BCN
- SEA
2 stops33h 25m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$617
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sun 4/267:00 pm
SEA
- BCN
2 stops34h 40m
Multiple Airlines
Sun 5/33:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$563
This Mytrip deal was found by Cheapflights users on 3/12. 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 4/267:00 pm
SEA
- BCN
2 stops20h 20m
Multiple Airlines
Wed 5/68:30 am
BCN
- SEA
2 stops34h 10m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$609
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Wed 4/297:00 pm
SEA
- BCN
2 stops44h 20m
Multiple Airlines
Wed 5/63:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$584
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 March 17, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Mon 4/133:40 pm
SEA
- BCN
3 stops31h 40m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Fri 4/177:00 pm
SEA
- BCN
3 stops32h 30m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/147:00 pm
SEA
- BCN
2 stops19h 59m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/57:00 pm
SEA
- BCN
2 stops19h 59m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$251
This Trip.com deal was found by Cheapflights users on 3/11. 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.
Mon 5/43:40 pm
SEA
- BCN
2 stops22h 15m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Fri 5/17:00 pm
SEA
- BCN
3 stops28h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/37:00 pm
SEA
- BCN
3 stops41h 40m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Sat 5/97:00 pm
SEA
- BCN
3 stops41h 55m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/117:00 pm
SEA
- BCN
3 stops28h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Sat 5/27:00 pm
SEA
- BCN
3 stops28h 50m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$268
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 March 17, 2026.
Round-trip from | $505 (FlightHub) |
|---|---|
One-way from | $241 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $701 |
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 March 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
Fri 9/4
3:55 pm-9:45 am
2 stops32h 50m
Barcelona-El Prat
Sun 9/20
9:45 am-10:17 pm
2 stops21h 32m
$654
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Mon 8/17
6:10 pm-10:10 pm
1 stop19h 00m
Barcelona-El Prat
Fri 10/9
10:15 am-4:00 pm
1 stop14h 45m
$707
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 9/8
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Sun 10/18
8:00 am-3:40 pm
1 stop16h 40m
$707
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sat 8/1
6:15 pm-10:10 pm
1 stop18h 55m
Barcelona-El Prat
Wed 8/19
10:25 am-4:41 pm
2 stops39h 16m
$901
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Mon 7/27
6:10 pm-10:10 pm
1 stop19h 00m
Barcelona-El Prat
Sat 8/22
5:00 pm-11:35 am
2 stops51h 35m
$908
Quickest round-trip
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Fri 8/7
6:40 pm-5:10 pm
1 stop13h 30m
Barcelona-El Prat
Fri 8/28
1:20 pm-3:46 pm
Nonstop11h 26m
$974
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sun 5/17
7:15 am-6:10 pm
2 stops25h 55m
Barcelona-El Prat
Fri 5/29
10:25 am-11:55 pm
2 stops22h 30m
$1,002
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sun 5/17
11:00 pm-8:35 am
1 stop24h 35m
Barcelona-El Prat
Fri 5/29
1:20 pm-3:33 pm
Nonstop11h 13m
$1,220
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Mon 5/11
6:40 pm-8:20 pm
1 stop16h 40m
Barcelona-El Prat
Sun 5/24
1:20 pm-3:33 pm
Nonstop11h 13m
$1,279
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Fri 9/4
6:45 pm-5:10 pm
1 stop13h 25m
Barcelona-El Prat
Sun 9/20
1:20 pm-3:59 pm
Nonstop11h 39m
$1,300
Showing 1-10 of 25 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?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Barcelona. Price data was last updated on March 13, 2026.
To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 47 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 $353). Flying from Seattle to Barcelona in June is currently the most expensive (average of $768). 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.
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 March 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.
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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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Alternative routes for Seattle to Barcelona
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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 March 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 March 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 March 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$501 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$436 | Average$709 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$461 | Average$541 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$477 | Average$590 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$482 | Average$786 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$483 | Average$838 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$486 | Average$971 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$490 | Average$749 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$502 | Average$866 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$570 | Average$750 | FlexibilityNo cancel fee | On-time76% |