$213+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Jul 9 — Jul 161
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 June 9, 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 June 9, 2026.
This FlightHub deal was found by Cheapflights users on 6/7. 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 9/155:40 pm
SEA
- BCN
2 stops39h 30m
Scandinavian Airlines
Thu 9/247:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 6/7![Scandinavian Airlines logo]()
$741
This Mytrip deal was found by Cheapflights users on 6/7. 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 8/173:40 pm
SEA
- BCN
3 stops35h 45m
Multiple Airlines
Wed 8/267:50 am
BCN
- SEA
2 stops21h 50m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$743
This Icelandair deal was found by Cheapflights users on 6/4. 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.
Sat 8/153:40 pm
SEA
- BCN
1 stop15h 45m
Icelandair
Mon 8/243:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 6/4![Icelandair logo]()
$744
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Wed 8/1210:15 am
SEA
- BCN
1 stop14h 55m
British Airways
Tue 8/2510:45 am
BCN
- SEA
1 stop17h 02m
British Airways
Deal found 6/5![British Airways logo]()
$745
This Scandinavian Airlines deal was found by Cheapflights users on 6/8. 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
Sat 9/127:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$748
This Scandinavian Airlines deal was found by Cheapflights users on 6/4. 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.
Tue 8/253:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Thu 9/312:50 pm
BCN
- SEA
2 stops33h 55m
Scandinavian Airlines
Deal found 6/4![Scandinavian Airlines logo]()
$749
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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.
Wed 8/125:40 pm
SEA
- BCN
1 stop19h 30m
Condor
Tue 8/2510:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/8![Condor logo]()
$750
This CheapOair deal was found by Cheapflights users on 6/8. 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.
Mon 8/1710:14 am
SEA
- BCN
2 stops26h 56m
Multiple Airlines
Tue 10/2710:15 am
BCN
- SEA
1 stop14h 20m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$751
This FlightHub deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:20 am
SEA
- BCN
2 stops25h 50m
Scandinavian Airlines
Wed 9/237:00 pm
BCN
- SEA
2 stops37h 10m
Scandinavian Airlines
Deal found 6/8![Scandinavian Airlines logo]()
$752
This Condor deal was found by Cheapflights users on 6/5. 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 10/56:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Sun 10/185:00 pm
BCN
- SEA
1 stop32h 10m
Condor
Deal found 6/5![Condor logo]()
$753
This Booking.com deal was found by Cheapflights users on 6/8. 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.
Mon 8/36:10 pm
SEA
- BCN
1 stop19h 00m
Multiple Airlines
Mon 8/318:00 am
BCN
- SEA
2 stops19h 51m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$754
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 June 9, 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 June 9, 2026.
This Condor deal was found by Cheapflights users on 6/6. 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.
Sun 9/65:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Wed 9/1610:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/6![Condor logo]()
$770
This Condor deal was found by Cheapflights users on 6/8. 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.
Sun 9/132:54 pm
SEA
- BCN
2 stops22h 16m
Multiple Airlines
Tue 9/228:00 am
BCN
- SEA
1 stop16h 40m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$810
This KLM deal was found by Cheapflights users on 6/8. 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 9/153:35 pm
SEA
- BCN
Nonstop10h 35m
KLM
Thu 9/246:20 am
BCN
- SEA
1 stop14h 27m
KLM
Deal found 6/8![KLM logo]()
$966
This United Airlines deal was found by Cheapflights users on 6/4. 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 9/1511:00 pm
SEA
- BCN
2 stops24h 00m
United Airlines
Thu 10/226:40 am
BCN
- SEA
1 stop14h 40m
United Airlines
Deal found 6/4![United Airlines logo]()
$972
This Condor deal was found by Cheapflights users on 6/4. 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.
Sun 9/135:40 pm
SEA
- BCN
1 stop13h 20m
Condor
Fri 10/2310:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 6/4![Condor logo]()
$834
This Condor deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Tue 7/218:00 am
BCN
- SEA
2 stops22h 34m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$900
This Condor deal was found by Cheapflights users on 6/4. 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 9/165:40 pm
SEA
- BCN
1 stop13h 25m
Condor
Sat 10/2410:25 am
BCN
- SEA
1 stop14h 35m
Condor
Deal found 6/4![Condor logo]()
$834
This KLM deal was found by Cheapflights users on 6/7. 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 6/7![KLM logo]()
$1,011
This KLM deal was found by Cheapflights users on 6/8. 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 7/206:35 pm
SEA
- BCN
1 stop13h 35m
Multiple Airlines
Fri 7/311:20 pm
BCN
- SEA
Nonstop11h 15m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$965
This Condor deal was found by Cheapflights users on 6/5. 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 10/68:06 pm
SEA
- BCN
2 stops41h 04m
Condor
Sun 10/185:00 pm
BCN
- SEA
1 stop32h 10m
Condor
Deal found 6/5![Condor logo]()
$884
This KLM deal was found by Cheapflights users on 6/7. 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
Multiple Airlines
Tue 8/1811:00 am
BCN
- SEA
1 stop17h 05m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$966
This Condor deal was found by Cheapflights users on 6/5. 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 10/98:06 pm
SEA
- BCN
2 stops41h 04m
Condor
Sun 10/185:00 pm
BCN
- SEA
1 stop32h 10m
Condor
Deal found 6/5![Condor logo]()
$922
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated June 9, 2026 and is based on user searches.
This Condor deal was found by Cheapflights users on 6/5. 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 6/96:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Thu 6/118:00 am
BCN
- SEA
2 stops24h 07m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$770
This Condor deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/116:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Thu 6/188:00 am
BCN
- SEA
2 stops20h 51m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$790
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 7/66:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Wed 7/228:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/9![Condor logo]()
$761
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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 7/66:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Wed 7/1510:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/9![Condor logo]()
$783
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Tue 7/76:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Sun 9/138:00 am
BCN
- SEA
2 stops20h 39m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$791
This Cheapflightsfares deal was found by Cheapflights users on 6/7. 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 7/76:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Thu 8/68:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 6/7![Condor logo]()
$794
This Booking.com deal was found by Cheapflights users on 6/7. 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.
Wed 7/85:40 pm
SEA
- BCN
1 stop19h 30m
Condor
Wed 7/158:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/7![Condor logo]()
$772
This Justfly.com deal was found by Cheapflights users on 6/8. 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 7/96:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Mon 7/208:00 am
BCN
- SEA
1 stop17h 10m
Condor
Deal found 6/8![Condor logo]()
$768
This Gotogate deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 pm
SEA
- BCN
1 stop19h 10m
Condor
Sun 7/2610:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 6/6![Condor logo]()
$771
This Justfly.com deal was found by Cheapflights users on 6/7. 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 7/166:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Tue 7/288:00 am
BCN
- SEA
1 stop16h 40m
Condor
Deal found 6/7![Condor logo]()
$802
This FlightHub deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Mon 7/2710:15 am
BCN
- SEA
1 stop14h 55m
Condor
Deal found 6/8![Condor logo]()
$767
This Bravofly deal was found by Cheapflights users on 6/7. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Thu 7/3010:15 am
BCN
- SEA
1 stop14h 45m
Condor
Deal found 6/7![Condor logo]()
$801
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 June 9, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/307:52 am
SEA
- BCN
3 stops30h 58m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 11/257:55 am
SEA
- BCN
3 stops23h 25m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/296:35 pm
SEA
- BCN
3 stops38h 35m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 11/287:55 am
SEA
- BCN
3 stops22h 30m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/287:52 am
SEA
- BCN
3 stops25h 03m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 12/22:35 pm
SEA
- BCN
2 stops21h 25m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$258
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 11/27:48 am
SEA
- BCN
3 stops22h 37m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:52 am
SEA
- BCN
3 stops23h 03m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$262
This Kiwi.com deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:25 pm
SEA
- BCN
2 stops39h 34m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 12/42:35 pm
SEA
- BCN
2 stops38h 15m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$265
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 June 9, 2026.
Round-trip from | $740 (Condor) |
|---|---|
One-way from | $213 (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 June 9, 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
Sun 9/6
5:40 pm-4:00 pm
1 stop13h 20m
Barcelona-El Prat
Wed 9/16
10:25 am-3:40 pm
1 stop14h 15m
$770
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sun 9/13
2:54 pm-10:10 pm
2 stops22h 16m
Barcelona-El Prat
Tue 9/22
8:00 am-3:40 pm
1 stop16h 40m
$810
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sun 9/13
5:40 pm-4:00 pm
1 stop13h 20m
Barcelona-El Prat
Fri 10/23
10:15 am-4:00 pm
1 stop14h 45m
$834
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 9/16
5:40 pm-4:05 pm
1 stop13h 25m
Barcelona-El Prat
Sat 10/24
10:25 am-4:00 pm
1 stop14h 35m
$834
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 10/6
8:06 pm-10:10 pm
2 stops41h 04m
Barcelona-El Prat
Sun 10/18
5:00 pm-4:10 pm
1 stop32h 10m
$884
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 7/9
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Tue 7/21
8:00 am-9:34 pm
2 stops22h 34m
$900
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Fri 10/9
8:06 pm-10:10 pm
2 stops41h 04m
Barcelona-El Prat
Sun 10/18
5:00 pm-4:10 pm
1 stop32h 10m
$922
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Mon 7/20
6:35 pm-5:10 pm
1 stop13h 35m
Barcelona-El Prat
Fri 7/31
1:20 pm-3:35 pm
Nonstop11h 15m
$965
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 9/15
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
Thu 9/24
6:20 am-11:47 am
1 stop14h 27m
$966
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 8/4
3:35 pm-11:10 am
Nonstop10h 35m
Barcelona-El Prat
Tue 8/18
11:00 am-7:05 pm
1 stop17h 05m
$966
Showing 1-10 of 23 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, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $351). Flying from Seattle to Barcelona in June is currently the most expensive (average of $653). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to BCN?
Find hourly flight availability from Seattle to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 9, 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 June 9, 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
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
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 June 9, 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 June 9, 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$529 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$473 | Average$847 | 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$857 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$483 | Average$767 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$1,139 | 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% |