$264+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Barcelona with Cheapflights
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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 April 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 April 17, 2026.
This CheapOair deal was found by Cheapflights users on 4/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:55 pm
SEA
- BCN
2 stops32h 50m
Scandinavian Airlines
Fri 9/1810:25 am
BCN
- SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$657
This oojo deal was found by Cheapflights users on 4/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Sun 8/305:00 pm
BCN
- SEA
1 stop32h 10m
Condor
Deal found 4/15![Condor logo]()
$660
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Tue 9/17:10 pm
SEA
- BCN
1 stop33h 20m
Turkish Airlines
Fri 9/1112:10 pm
BCN
- SEA
1 stop38h 05m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$661
This oojo deal was found by Cheapflights users on 4/12. 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.
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 4/12![Scandinavian Airlines logo]()
$662
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Tue 9/157:10 pm
SEA
- BCN
1 stop33h 20m
Turkish Airlines
Thu 9/2412:10 pm
BCN
- SEA
1 stop38h 05m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$664
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 7/106:00 pm
SEA
- BCN
1 stop19h 10m
Condor
Sun 8/305:00 pm
BCN
- SEA
1 stop32h 10m
Condor
Deal found 4/12![Condor logo]()
$665
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Tue 5/58:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 4/16![Condor logo]()
$668
This Booking.com deal was found by Cheapflights users on 4/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:10 pm
SEA
- BCN
1 stop33h 20m
Turkish Airlines
Thu 9/107:40 am
BCN
- SEA
1 stop18h 35m
Turkish Airlines
Deal found 4/12![Turkish Airlines logo]()
$671
This Justfly.com deal was found by Cheapflights users on 4/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:35 pm
SEA
- BCN
1 stop20h 05m
Turkish Airlines
Wed 9/212:10 pm
BCN
- SEA
1 stop31h 30m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$673
This Booking.com deal was found by Cheapflights users on 4/12. 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 Booking.com 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
Fri 9/1810:25 am
BCN
- SEA
1 stop36h 20m
Scandinavian Airlines
Deal found 4/12![Scandinavian Airlines logo]()
$675
This KAYAK deal was found by Cheapflights users on 4/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Mon 9/1410:35 am
BCN
- SEA
2 stops44h 30m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$680
This Iberia deal was found by Cheapflights users on 4/12. 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.
Thu 7/301:30 pm
SEA
- REU
2 stops35h 25m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 4/12![Iberia logo]()
$2,479
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 April 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 April 17, 2026.
This Condor deal was found by Cheapflights users on 4/12. 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.
Fri 7/106:00 pm
SEA
- BCN
1 stop13h 05m
Multiple Airlines
Sun 8/308:00 am
BCN
- SEA
2 stops19h 56m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$930
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:15 am
SEA
- BCN
1 stop16h 30m
Delta
Wed 8/191:20 pm
BCN
- SEA
Nonstop11h 25m
Delta
Deal found 4/13![Delta logo]()
$1,025
This KLM deal was found by Cheapflights users on 4/15. 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.
Tue 8/43:35 pm
SEA
- BCN
Nonstop10h 35m
KLM
Tue 8/187:45 pm
BCN
- SEA
1 stop24h 52m
KLM
Deal found 4/15![KLM logo]()
$1,026
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/411:52 pm
SEA
- BCN
2 stops23h 28m
United Airlines
Tue 8/181:15 pm
BCN
- SEA
2 stops35h 21m
United Airlines
Deal found 4/15![United Airlines logo]()
$1,028
This Condor deal was found by Cheapflights users on 4/16. 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.
Mon 6/296:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Thu 7/238:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 4/16![Condor logo]()
$1,044
This Delta deal was found by Cheapflights users on 4/17. 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 7/283:35 pm
SEA
- BCN
Nonstop10h 35m
Delta
Tue 8/1112:20 pm
BCN
- SEA
1 stop14h 14m
Delta
Deal found 4/17![Delta logo]()
$1,049
This Condor deal was found by Cheapflights users on 4/16. 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 6/306:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Fri 7/245:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 4/16![Condor logo]()
$1,065
This Condor deal was found by Cheapflights users on 4/14. 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.
Wed 5/203:32 pm
SEA
- BCN
2 stops21h 38m
Multiple Airlines
Mon 5/258:00 am
BCN
- SEA
2 stops19h 54m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$1,070
This KLM deal was found by Cheapflights users on 4/12. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:35 pm
SEA
- BCN
Nonstop10h 35m
KLM
Fri 8/281:20 pm
BCN
- SEA
Nonstop11h 25m
KLM
Deal found 4/12![KLM logo]()
$1,071
This Delta deal was found by Cheapflights users on 4/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/71:30 pm
SEA
- BCN
1 stop17h 05m
Delta
Fri 8/281:20 pm
BCN
- SEA
Nonstop11h 25m
Delta
Deal found 4/12![Delta logo]()
$1,075
This Iberia deal was found by Cheapflights users on 4/12. 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.
Thu 7/301:30 pm
SEA
- REU
2 stops35h 25m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 4/12![Iberia logo]()
$2,479
This Delta deal was found by Cheapflights users on 4/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:30 pm
SEA
- BCN
1 stop18h 40m
Delta
Fri 8/281:20 pm
BCN
- SEA
Nonstop11h 25m
Delta
Deal found 4/13![Delta logo]()
$1,075
This Iberia deal was found by Cheapflights users on 4/12. 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 8/21:30 pm
SEA
- REU
2 stops34h 15m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 4/12![Iberia logo]()
$2,718
This Iberia deal was found by Cheapflights users on 4/12. 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.
Sat 8/18:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Tue 8/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 4/12![Iberia logo]()
$2,848
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated April 17, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 4/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Tue 5/58:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 4/16![Condor logo]()
$668
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Fri 5/88:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 4/14![Condor logo]()
$734
This Cheapflightsfares deal was found by Cheapflights users on 4/13. 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.
Tue 5/56:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Tue 5/198:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 4/13![Condor logo]()
$712
This Mytrip deal was found by Cheapflights users on 4/15. 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 5/57:00 pm
SEA
- BCN
2 stops19h 59m
Multiple Airlines
Tue 5/127:30 am
BCN
- SEA
2 stops35h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$716
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/76:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Thu 5/218:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 4/15![Condor logo]()
$661
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/76:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Wed 5/205:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 4/13![Condor logo]()
$681
This FlightHub deal was found by Cheapflights users on 4/13. 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.
Sat 5/97:15 am
SEA
- BCN
2 stops41h 30m
Scandinavian Airlines
Mon 5/257:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 4/13![Scandinavian Airlines logo]()
$700
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Sat 5/96:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Thu 5/2110:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 4/15![Condor logo]()
$703
This oojo deal was found by Cheapflights users on 4/14. 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.
Sat 5/96:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Wed 5/205:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 4/14![Condor logo]()
$718
This Mytrip deal was found by Cheapflights users on 4/12. 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.
Sat 5/93:40 pm
SEA
- BCN
3 stops33h 05m
Multiple Airlines
Wed 5/2011:10 pm
BCN
- SEA
3 stops30h 58m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$738
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 April 17, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Mon 4/273:40 pm
SEA
- BCN
3 stops21h 20m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/77:00 pm
SEA
- BCN
3 stops38h 40m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/107:00 pm
SEA
- BCN
3 stops42h 00m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/37:00 pm
SEA
- BCN
3 stops42h 00m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/43:40 pm
SEA
- BCN
3 stops40h 20m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/117:00 pm
SEA
- BCN
3 stops45h 10m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Tue 5/53:40 pm
SEA
- BCN
3 stops24h 30m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$289
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 April 17, 2026.
Round-trip from | $657 (CheapOair) |
|---|---|
One-way from | $264 (Mytrip) |
Popular in | June |
Cheapest in | February |
Average price | $752 |
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 April 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 7/10
6:00 pm-4:05 pm
1 stop13h 05m
Barcelona-El Prat
Sun 8/30
8:00 am-6:56 pm
2 stops19h 56m
$930
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 8/4
7:15 am-8:45 am
1 stop16h 30m
Barcelona-El Prat
Wed 8/19
1:20 pm-3:45 pm
Nonstop11h 25m
$1,025
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 8/4
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
Tue 8/18
7:45 pm-11:37 am
1 stop24h 52m
$1,026
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 8/4
11:52 pm-8:20 am
2 stops23h 28m
Barcelona-El Prat
Tue 8/18
1:15 pm-3:36 pm
2 stops35h 21m
$1,028
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Mon 6/29
6:10 pm-10:10 pm
1 stop19h 00m
Barcelona-El Prat
Thu 7/23
8:00 am-4:00 pm
1 stop17h 00m
$1,044
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 7/28
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
Tue 8/11
12:20 pm-5:34 pm
1 stop14h 14m
$1,049
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 6/30
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Fri 7/24
5:00 pm-4:00 pm
1 stop32h 00m
$1,065
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 5/20
3:32 pm-10:10 pm
2 stops21h 38m
Barcelona-El Prat
Mon 5/25
8:00 am-6:54 pm
2 stops19h 54m
$1,070
Quickest round-trip
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 8/6
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
Fri 8/28
1:20 pm-3:45 pm
Nonstop11h 25m
$1,071
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Fri 8/7
1:30 pm-3:35 pm
1 stop17h 05m
Barcelona-El Prat
Fri 8/28
1:20 pm-3:45 pm
Nonstop11h 25m
$1,075
Showing 1-10 of 24 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 April 10, 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 $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.
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 April 17, 2026.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta,Icelandair, andLufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Crew
8.5
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
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 April 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 April 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$521 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$461 | Average$558 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$478 | Average$667 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$480 | Average$791 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$481 | Average$764 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$482 | Average$825 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$484 | Average$749 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$1,077 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$715 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$582 | Average$744 | FlexibilityNo cancel fee | On-time76% |