$206+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
jul. 17 — jul. 241
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 74 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 junio 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 junio 17, 2026.
This Ovago deal was found by Cheapflights users on 6/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/116:05 pm
SEA
- BCN
1 stop19h 05m
Condor
mié. 8/268:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/16![Condor logo]()
$717
This Condor deal was found by Cheapflights users on 6/17. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/118:15 am
SEA
- BCN
2 stops28h 55m
Multiple Airlines
dom. 10/1810:25 am
BCN
- SEA
1 stop14h 15m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$720
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/135:40 pm
SEA
- BCN
1 stop19h 30m
Multiple Airlines
lun. 9/218:00 am
BCN
- SEA
2 stops24h 12m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$721
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/165:40 pm
SEA
- BCN
1 stop19h 30m
Condor
lun. 8/315:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Deal found 6/17![Condor logo]()
$722
This Condor deal was found by Cheapflights users on 6/16. 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.
sáb. 8/156:15 pm
SEA
- BCN
1 stop18h 55m
Condor
lun. 8/2410:15 am
BCN
- SEA
1 stop14h 55m
Condor
Deal found 6/16![Condor logo]()
$733
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/305:40 pm
SEA
- BCN
1 stop13h 20m
Condor
dom. 9/610:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/17![Condor logo]()
$739
This Condor deal was found by Cheapflights users on 6/16. 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.
vie. 9/186:00 pm
SEA
- BCN
1 stop19h 10m
Condor
dom. 9/2710:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/16![Condor logo]()
$740
This CheapOair deal was found by Cheapflights users on 6/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/36:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
dom. 9/68:00 am
BCN
- SEA
2 stops22h 40m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$741
This Mytrip deal was found by Cheapflights users on 6/15. 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.
vie. 8/215:50 am
SEA
- BCN
3 stops32h 00m
Multiple Airlines
mar. 9/17:30 am
BCN
- SEA
3 stops24h 18m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$748
This FlightHub deal was found by Cheapflights users on 6/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/176:10 pm
SEA
- BCN
1 stop19h 00m
Multiple Airlines
lun. 8/318:00 am
BCN
- SEA
2 stops19h 51m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$749
This Icelandair deal was found by Cheapflights users on 6/12. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/123:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
sáb. 10/173:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 6/12![Icelandair logo]()
$750
This Icelandair deal was found by Cheapflights users on 6/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/37:00 pm
SEA
- BCN
1 stop34h 45m
Icelandair
sáb. 10/173:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 6/14![Icelandair logo]()
$751
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 junio 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 junio 17, 2026.
This Condor deal was found by Cheapflights users on 6/16. 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.
sáb. 7/116:15 pm
SEA
- BCN
1 stop18h 55m
Multiple Airlines
jue. 7/168:00 am
BCN
- SEA
2 stops20h 51m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$760
This Delta deal was found by Cheapflights users on 6/14. 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.
dom. 8/91:30 pm
SEA
- BCN
1 stop17h 05m
Delta
vie. 8/211:20 pm
BCN
- SEA
Nonstop11h 25m
Delta
Deal found 6/14![Delta logo]()
$964
This KLM deal was found by Cheapflights users on 6/16. 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.
mar. 9/153:35 pm
SEA
- BCN
Nonstop10h 35m
KLM
jue. 9/246:20 am
BCN
- SEA
1 stop14h 27m
KLM
Deal found 6/16![KLM logo]()
$965
This Condor deal was found by Cheapflights users on 6/12. 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.
lun. 8/36:10 pm
SEA
- BCN
1 stop19h 00m
Multiple Airlines
mié. 8/198:00 am
BCN
- SEA
2 stops22h 39m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$866
This Delta deal was found by Cheapflights users on 6/12. 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.
jue. 9/173:35 pm
SEA
- BCN
Nonstop10h 35m
Delta
lun. 10/51:25 pm
BCN
- SEA
1 stop31h 27m
Delta
Deal found 6/12![Delta logo]()
$1,015
This Condor deal was found by Cheapflights users on 6/13. 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.
jue. 10/19:57 am
SEA
- BCN
2 stops27h 13m
Multiple Airlines
vie. 10/98:00 am
BCN
- SEA
2 stops22h 25m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$960
This Delta deal was found by Cheapflights users on 6/16. 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.
jue. 9/243:35 pm
SEA
- BCN
Nonstop10h 35m
Delta
jue. 10/19:20 am
BCN
- SEA
1 stop16h 15m
Delta
Deal found 6/16![Delta logo]()
$1,015
This KLM deal was found by Cheapflights users on 6/16. 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.
dom. 8/91:30 pm
SEA
- BCN
1 stop16h 20m
Multiple Airlines
mié. 8/191:20 pm
BCN
- SEA
Nonstop11h 25m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$965
This Delta deal was found by Cheapflights users on 6/12. 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.
vie. 8/711:13 pm
SEA
- BCN
1 stop24h 22m
Delta
vie. 8/281:20 pm
BCN
- SEA
Nonstop11h 25m
Delta
Deal found 6/12![Delta logo]()
$1,015
This Delta deal was found by Cheapflights users on 6/12. 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.
lun. 7/131:30 pm
SEA
- BCN
1 stop16h 20m
Delta
dom. 7/191:20 pm
BCN
- SEA
Nonstop11h 15m
Delta
Deal found 6/12![Delta logo]()
$1,034
This Delta deal was found by Cheapflights users on 6/13. 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.
mié. 9/307:23 am
SEA
- BCN
1 stop16h 12m
Delta
dom. 10/111:20 pm
BCN
- SEA
Nonstop11h 24m
Delta
Deal found 6/13![Delta logo]()
$1,044
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated junio 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated junio 17, 2026 and is based on user searches.
This Condor deal was found by Cheapflights users on 6/14. 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.
sáb. 7/46:15 pm
SEA
- BCN
1 stop18h 55m
Multiple Airlines
lun. 8/318:00 am
BCN
- SEA
2 stops19h 51m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$760
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/66:10 pm
SEA
- BCN
1 stop19h 00m
Condor
mié. 7/2210:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/16![Condor logo]()
$776
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/66:10 pm
SEA
- BCN
1 stop19h 00m
Condor
mié. 7/158:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/17![Condor logo]()
$783
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
lun. 7/63:40 pm
SEA
- BCN
2 stops32h 10m
Multiple Airlines
jue. 9/36:30 pm
BCN
- SEA
1 stop33h 16m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$802
This FlightHub deal was found by Cheapflights users on 6/13. 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.
mar. 7/76:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
dom. 9/138:00 am
BCN
- SEA
2 stops20h 39m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$758
This Booking.com deal was found by Cheapflights users on 6/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/76:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
mar. 7/148:00 am
BCN
- SEA
2 stops22h 34m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$792
This Booking.com deal was found by Cheapflights users on 6/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/116:15 pm
SEA
- BCN
1 stop18h 55m
Condor
jue. 7/1610:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 6/16![Condor logo]()
$777
This Cheapflightsfares deal was found by Cheapflights users on 6/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/116:15 pm
SEA
- BCN
1 stop18h 55m
Condor
vie. 7/178:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 6/16![Condor logo]()
$816
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/195:40 pm
SEA
- BCN
1 stop19h 30m
Condor
mié. 7/228:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/15![Condor logo]()
$798
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 7/206:10 pm
SEA
- BCN
1 stop19h 00m
Condor
vie. 7/318:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 6/12![Condor logo]()
$809
This FlightHub deal was found by Cheapflights users on 6/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/225:40 pm
SEA
- BCN
1 stop19h 30m
Condor
mié. 8/125:00 pm
BCN
- SEA
1 stop32h 00m
Condor
Deal found 6/16![Condor logo]()
$789
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 junio 17, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated junio 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/148:00 am
SEA
- BCN
3 stops29h 45m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
sáb. 8/296:35 pm
SEA
- BCN
3 stops45h 40m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/107:48 am
SEA
- BCN
3 stops22h 37m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/87:48 am
SEA
- BCN
3 stops22h 37m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
mié. 9/307:52 am
SEA
- BCN
3 stops27h 48m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
mar. 8/256:35 pm
SEA
- BCN
3 stops44h 40m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dom. 11/157:48 am
SEA
- BCN
3 stops31h 17m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
mar. 8/117:00 pm
SEA
- BCN
2 stops19h 59m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$256
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 junio 17, 2026.
Round-trip from | $717 (Cheapflightsfares) |
|---|---|
One-way from | $206 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,187 |
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 junio 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
sáb. 7/11
6:15 pm-10:10 pm
1 stop18h 55m
Barcelona-El Prat
jue. 7/16
8:00 am-7:51 pm
2 stops20h 51m
$760
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
lun. 8/3
6:10 pm-10:10 pm
1 stop19h 00m
Barcelona-El Prat
mié. 8/19
8:00 am-9:39 pm
2 stops22h 39m
$866
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
jue. 10/1
9:57 am-10:10 pm
2 stops27h 13m
Barcelona-El Prat
vie. 10/9
8:00 am-9:25 pm
2 stops22h 25m
$960
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
dom. 8/9
1:30 pm-3:35 pm
1 stop17h 05m
Barcelona-El Prat
vie. 8/21
1:20 pm-3:45 pm
Nonstop11h 25m
$964
Quickest round-trip
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
mar. 9/15
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
jue. 9/24
6:20 am-11:47 am
1 stop14h 27m
$965
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
dom. 8/9
1:30 pm-2:50 pm
1 stop16h 20m
Barcelona-El Prat
mié. 8/19
1:20 pm-3:45 pm
Nonstop11h 25m
$965
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
jue. 9/17
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
lun. 10/5
1:25 pm-11:52 am
1 stop31h 27m
$1,015
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
jue. 9/24
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
jue. 10/1
9:20 am-4:35 pm
1 stop16h 15m
$1,015
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
vie. 8/7
11:13 pm-8:35 am
1 stop24h 22m
Barcelona-El Prat
vie. 8/28
1:20 pm-3:45 pm
Nonstop11h 25m
$1,015
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
lun. 7/13
1:30 pm-2:50 pm
1 stop16h 20m
Barcelona-El Prat
dom. 7/19
1:20 pm-3:35 pm
Nonstop11h 15m
$1,034
Showing 1-10 of 20 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
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
What is the cheapest month to book a flight from Seattle to Barcelona?
Currently, October is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $330). 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 junio 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?
How often are flights from Seattle to Barcelona delayed?
About 25% of weekly flights between Seattle and Barcelona have experienced delays in the past year, with the average delay time being 153 minutes.
What is the most punctual flight time for Seattle to Barcelona flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
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 69 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.
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 junio 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.
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Entertainment
7.8
Comfort
7.8
Overall
7.9
Boarding
8.1
Food
7.2
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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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 junio 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 junio 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 junio 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$521 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$470 | Average$826 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$478 | Average$577 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$480 | Average$1,185 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$481 | Average$873 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$483 | Average$766 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$1,137 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$488 | Average$732 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$552 | Average$722 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$586 | Average$837 | FlexibilityNo cancel fee | On-time77% |