$209+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BCN
Apr 3 — Apr 101
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 March 4, 2026.
Explore the most affordable flight options available from Seattle to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 4, 2026.
This FlightHub deal was found by Cheapflights users on 2/27. 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 8/153:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Sat 8/227:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/27![Scandinavian Airlines logo]()
$487
This FlightHub deal was found by Cheapflights users on 2/28. 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.
Sun 8/233:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Mon 9/77:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$494
This Booking.com deal was found by Cheapflights users on 2/27. 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.
Sun 5/35:40 pm
SEA
- BCN
1 stop19h 30m
Condor
Wed 5/1310:25 am
BCN
- SEA
1 stop14h 15m
Condor
Deal found 2/27![Condor logo]()
$497
This Kiwi.com deal was found by Cheapflights users on 2/28. 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 9/183:55 pm
SEA
- BCN
1 stop32h 00m
Scandinavian Airlines
Sat 9/267:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$504
This KAYAK deal was found by Cheapflights users on 3/2. 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.
Sun 8/303:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Thu 9/1712:25 pm
BCN
- SEA
1 stop34h 20m
Scandinavian Airlines
Deal found 3/2![Scandinavian Airlines logo]()
$506
This KAYAK deal was found by Cheapflights users on 3/2. 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.
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 3/2![Scandinavian Airlines logo]()
$514
This Scandinavian Airlines deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/233:55 pm
SEA
- BCN
1 stop17h 15m
Scandinavian Airlines
Thu 9/107:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$516
This KAYAK deal was found by Cheapflights users on 3/2. 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.
Fri 9/43:55 pm
SEA
- BCN
2 stops32h 50m
Scandinavian Airlines
Sat 9/197:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 3/2![Scandinavian Airlines logo]()
$524
This Booking.com deal was found by Cheapflights users on 2/28. 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 5/56:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Sat 5/168:00 am
BCN
- SEA
1 stop17h 00m
Condor
Deal found 2/28![Condor logo]()
$530
This Trip.com deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:55 pm
SEA
- BCN
1 stop34h 40m
Scandinavian Airlines
Thu 9/247:00 pm
BCN
- SEA
1 stop27h 45m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$531
This Iberia deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/281:35 pm
SEA
- REU
2 stops34h 10m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 2/28![Iberia logo]()
$2,448
This Iberia deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:35 pm
SEA
- REU
2 stops58h 10m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops35h 20m
Iberia
Deal found 2/28![Iberia logo]()
$2,518
Best flights from Seattle to BarcelonaDiscover carefully curated flight deals from Seattle to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 4, 2026.
Discover carefully curated flight deals from Seattle to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 4, 2026.
This Condor deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Sat 5/168:00 am
BCN
- SEA
2 stops21h 26m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$670
This United Airlines deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:00 am
SEA
- BCN
2 stops32h 25m
United Airlines
Wed 4/291:15 pm
BCN
- SEA
2 stops43h 44m
United Airlines
Deal found 2/27![United Airlines logo]()
$698
This Turkish Airlines deal was found by Cheapflights users on 2/26. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 pm
SEA
- BCN
1 stop19h 05m
Turkish Airlines
Thu 5/147:40 am
BCN
- SEA
1 stop18h 35m
Turkish Airlines
Deal found 2/26![Turkish Airlines logo]()
$711
This Scandinavian Airlines deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/297:20 am
SEA
- BCN
2 stops25h 50m
Scandinavian Airlines
Sun 4/59:45 am
BCN
- SEA
2 stops21h 25m
Scandinavian Airlines
Deal found 2/28![Scandinavian Airlines logo]()
$738
This Delta deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:10 am
SEA
- BCN
2 stops19h 25m
Delta
Wed 5/66:20 am
BCN
- SEA
1 stop14h 22m
Delta
Deal found 3/2![Delta logo]()
$785
This KLM deal was found by Cheapflights users on 3/1. 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 5/193:25 pm
SEA
- BCN
Nonstop10h 45m
KLM
Sun 5/311:20 pm
BCN
- SEA
Nonstop11h 13m
KLM
Deal found 3/1![KLM logo]()
$1,176
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Sat 4/1111:59 pm
SEA
- BCN
2 stops23h 21m
United Airlines
Sun 4/1912:15 pm
BCN
- SEA
2 stops39h 45m
United Airlines
Deal found 2/26![United Airlines logo]()
$740
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Sat 4/1111:59 pm
SEA
- BCN
1 stop28h 16m
United Airlines
Mon 4/203:15 pm
BCN
- SEA
1 stop16h 27m
United Airlines
Deal found 2/28![United Airlines logo]()
$763
This Condor deal was found by Cheapflights users on 2/26. 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 5/2110:30 am
SEA
- BCN
2 stops20h 35m
Multiple Airlines
Tue 5/268:00 am
BCN
- SEA
1 stop16h 40m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$850
This United Airlines deal was found by Cheapflights users on 2/26. 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.
Thu 4/28:00 am
SEA
- BCN
1 stop16h 20m
United Airlines
Wed 4/2212:00 pm
BCN
- SEA
2 stops19h 56m
United Airlines
Deal found 2/26![United Airlines logo]()
$954
This Iberia deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/281:35 pm
SEA
- REU
2 stops34h 10m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 2/28![Iberia logo]()
$2,448
This United Airlines deal was found by Cheapflights users on 2/27. 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.
Fri 3/203:00 pm
SEA
- BCN
1 stop13h 15m
United Airlines
Wed 3/2510:30 am
BCN
- SEA
1 stop18h 26m
United Airlines
Deal found 2/27![United Airlines logo]()
$961
This KLM deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:40 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Sun 5/241:20 pm
BCN
- SEA
Nonstop11h 13m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$1,180
This Iberia deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:35 pm
SEA
- REU
2 stops58h 10m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops35h 20m
Iberia
Deal found 2/28![Iberia logo]()
$2,518
This Iberia deal was found by Cheapflights users on 2/28. 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 7/28:20 pm
SEA
- REU
2 stops27h 25m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 2/28![Iberia logo]()
$2,586
This Iberia deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Sat 7/189:15 am
REU
- SEA
2 stops42h 10m
Iberia
Deal found 2/28![Iberia logo]()
$2,597
Last-minute flights from Seattle to BarcelonaDiscover last-minute flight deals from Seattle to Barcelona. Data last updated March 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Barcelona. Data last updated March 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:40 am
SEA
- BCN
3 stops27h 50m
Multiple Airlines
Wed 4/226:15 am
BCN
- SEA
3 stops24h 38m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$602
This Mytrip deal was found by Cheapflights users on 3/3. 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.
Fri 4/177:00 pm
SEA
- BCN
3 stops28h 55m
Multiple Airlines
Fri 4/245:45 am
BCN
- SEA
2 stops23h 55m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$560
This oojo deal was found by Cheapflights users on 2/27. 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.
Wed 4/223:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Wed 5/63:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 2/27![Icelandair logo]()
$595
This Gotogate deal was found by Cheapflights users on 2/27. 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.
Wed 4/223:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Wed 4/293:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 2/27![Icelandair logo]()
$604
This Mytrip deal was found by Cheapflights users on 2/27. 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.
Thu 4/237:00 pm
SEA
- BCN
2 stops20h 50m
Multiple Airlines
Wed 5/63:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$575
This Rumbo deal was found by Cheapflights users on 2/27. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Wed 5/63:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 2/27![Icelandair logo]()
$587
This Gotogate deal was found by Cheapflights users on 3/2. 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.
Thu 4/233:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Sat 5/93:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Deal found 3/2![Icelandair logo]()
$603
This Mytrip deal was found by Cheapflights users on 2/28. 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.
Fri 4/247:00 pm
SEA
- BCN
2 stops18h 50m
Multiple Airlines
Fri 5/811:40 am
BCN
- SEA
2 stops18h 00m
Multiple Airlines
Deal found 2/28![Multiple Airlines logo]()
$583
This Gotogate deal was found by Cheapflights users on 2/27. 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 4/247:00 pm
SEA
- BCN
1 stop34h 45m
Icelandair
Fri 5/83:45 pm
BCN
- SEA
1 stop35h 10m
Icelandair
Deal found 2/27![Icelandair logo]()
$590
This Mytrip deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BCN
2 stops15h 35m
Multiple Airlines
Tue 5/510:55 am
BCN
- SEA
2 stops31h 45m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$596
One-way flights from Seattle to BarcelonaSearch for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated March 4, 2026.
Search for one-way flight options from Seattle to Barcelona. Find affordable one-way fares based on user searches. Data last updated March 4, 2026.
This Trip.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/213:40 pm
SEA
- BCN
2 stops23h 45m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$209
This Trip.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
- BCN
2 stops24h 05m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$211
This Trip.com deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 pm
SEA
- BCN
2 stops20h 50m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:00 pm
SEA
- BCN
2 stops34h 40m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:00 pm
SEA
- BCN
2 stops21h 15m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 2/27. 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 4/237:00 pm
SEA
- BCN
2 stops41h 40m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
- BCN
2 stops15h 35m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:00 pm
SEA
- BCN
2 stops19h 59m
Multiple Airlines
Deal found 3/2![Multiple Airlines logo]()
$239
This Iberia deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/281:35 pm
SEA
- REU
2 stops34h 10m
Iberia
Deal found 3/2![Iberia logo]()
$1,409
This Iberia deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Deal found 3/2![Iberia logo]()
$1,479
This Iberia deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:20 pm
SEA
- REU
2 stops51h 25m
Iberia
Deal found 3/2![Iberia logo]()
$1,563
Find flight deals from Seattle to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Barcelona (S37). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 4, 2026.
Round-trip from | $487 (FlightHub) |
|---|---|
One-way from | $209 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $701 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Barcelona that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 4, 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
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 5/5
6:05 pm-10:10 pm
1 stop19h 05m
Barcelona-El Prat
Sat 5/16
8:00 am-8:26 pm
2 stops21h 26m
$670
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 4/22
5:00 am-10:25 pm
2 stops32h 25m
Barcelona-El Prat
Wed 4/29
1:15 pm-11:59 pm
2 stops43h 44m
$698
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Tue 4/28
7:10 pm-11:15 pm
1 stop19h 05m
Barcelona-El Prat
Thu 5/14
7:40 am-5:15 pm
1 stop18h 35m
$711
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sun 3/29
7:20 am-6:10 pm
2 stops25h 50m
Barcelona-El Prat
Sun 4/5
9:45 am-10:10 pm
2 stops21h 25m
$738
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sat 4/11
11:59 pm-8:20 am
2 stops23h 21m
Barcelona-El Prat
Sun 4/19
12:15 pm-7:00 pm
2 stops39h 45m
$740
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Sat 4/11
11:59 pm-1:15 pm
1 stop28h 16m
Barcelona-El Prat
Mon 4/20
3:15 pm-10:42 pm
1 stop16h 27m
$763
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Wed 4/22
11:10 am-3:35 pm
2 stops19h 25m
Barcelona-El Prat
Wed 5/6
6:20 am-11:42 am
1 stop14h 22m
$785
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 5/21
10:30 am-4:05 pm
2 stops20h 35m
Barcelona-El Prat
Tue 5/26
8:00 am-3:40 pm
1 stop16h 40m
$850
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Thu 4/2
8:00 am-9:20 am
1 stop16h 20m
Barcelona-El Prat
Wed 4/22
12:00 pm-10:56 pm
2 stops19h 56m
$954
SeattleBarcelona
SEA - BCN
SEABCN
Seattle/Tacoma Intl
Fri 3/20
3:00 pm-12:15 pm
1 stop13h 15m
Barcelona-El Prat
Wed 3/25
10:30 am-8:56 pm
1 stop18h 26m
$961
Showing 1-10 of 28 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 February 27, 2026.
To ensure you get the cheapest price possible for a flight from Seattle to Barcelona, you should look to book at least 47 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Seattle to Barcelona?
Currently, January is the cheapest month in which you can book a flight from Seattle to Barcelona (average of $353). Flying from Seattle to Barcelona in June is currently the most expensive (average of $810). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Barcelona. Reviews last updated March 4, 2026.
Read through reviews of airlines operating flights from Seattle to Barcelona, such as Delta, United Airlines, and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Seattle to Barcelona. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Barcelona
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Complete your trip
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Search flights from Seattle to Barcelona by cabin class
Find flights from Seattle to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Barcelona flights
Browse other Seattle and Barcelona flight options. Last updated on March 4, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on March 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Seattle to Barcelona
Discover the top 10 airlines that operate flights from Seattle to Barcelona. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$367 | Average$488 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$461 | Average$541 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$476 | Average$712 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$477 | Average$589 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$482 | Average$792 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$483 | Average$842 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$486 | Average$955 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$491 | Average$748 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$502 | Average$801 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$567 | Average$747 | FlexibilityNo cancel fee | On-time76% |