$378+ Cheap flights from Barcelona-El Prat (BCN) to Seattle (SEA)
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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SEA
May 9 — May 161
Round-trip
1 adult, Economy
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Cheapest flights from Barcelona-El Prat to SeattleExplore the most affordable flight options available from Barcelona-El Prat to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
Explore the most affordable flight options available from Barcelona-El Prat to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1110:25 am
BCN
- SEA
1 stop14h 15m
Condor
Tue 10/206:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Deal found 4/6![Condor logo]()
$569
This Rumbo deal was found by Cheapflights users on 4/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:15 am
BCN
- SEA
1 stop14h 45m
Condor
Sat 9/266:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Deal found 4/7![Condor logo]()
$581
This Rumbo deal was found by Cheapflights users on 4/6. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:15 am
BCN
- SEA
1 stop14h 45m
Condor
Thu 10/156:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Deal found 4/6![Condor logo]()
$585
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 10/710:25 am
BCN
- SEA
1 stop14h 15m
Condor
Sat 10/176:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Deal found 4/6![Condor logo]()
$623
This Gotogate deal was found by Cheapflights users on 4/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:15 am
BCN
- SEA
1 stop14h 45m
Condor
Fri 9/256:00 pm
SEA
- BCN
1 stop19h 10m
Condor
Deal found 4/8![Condor logo]()
$637
This Mytrip deal was found by Cheapflights users on 4/7. 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.
Wed 6/37:25 am
BCN
- SEA
2 stops22h 15m
Multiple Airlines
Mon 6/83:40 pm
SEA
- BCN
2 stops24h 35m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$640
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Sat 10/105:00 pm
BCN
- SEA
1 stop31h 40m
Condor
Sat 10/176:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Deal found 4/6![Condor logo]()
$642
This Mytrip deal was found by Cheapflights users on 4/7. 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.
Thu 4/237:20 am
BCN
- SEA
2 stops19h 35m
Multiple Airlines
Mon 4/273:40 pm
SEA
- BCN
2 stops24h 35m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$643
This Gotogate deal was found by Cheapflights users on 4/6. 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.
Thu 9/38:00 am
BCN
- SEA
1 stop17h 00m
Condor
Thu 9/106:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Deal found 4/6![Condor logo]()
$653
This Justfly.com deal was found by Cheapflights users on 4/8. 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.
Tue 6/1610:25 am
BCN
- SEA
1 stop14h 15m
Condor
Tue 7/76:05 pm
SEA
- BCN
1 stop19h 05m
Condor
Deal found 4/8![Condor logo]()
$660
This Gotogate deal was found by Cheapflights users on 4/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:00 am
BCN
- SEA
1 stop16h 40m
Condor
Fri 9/256:00 pm
SEA
- BCN
1 stop13h 05m
Condor
Deal found 4/8![Condor logo]()
$664
Best flights from Barcelona-El Prat to SeattleDiscover carefully curated flight deals from Barcelona-El Prat to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
Discover carefully curated flight deals from Barcelona-El Prat to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
This Condor deal was found by Cheapflights users on 4/6. 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.
Tue 10/610:25 am
BCN
- SEA
1 stop14h 15m
Condor
Mon 10/126:10 pm
SEA
- BCN
1 stop19h 00m
Condor
Deal found 4/6![Condor logo]()
$686
This Condor deal was found by Cheapflights users on 4/5. 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 5/158:00 am
BCN
- SEA
2 stops23h 27m
Multiple Airlines
Tue 5/266:05 pm
SEA
- BCN
1 stop19h 05m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$819
This Delta deal was found by Cheapflights users on 4/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:20 pm
BCN
- SEA
Nonstop11h 10m
Delta
Mon 6/82:30 pm
SEA
- BCN
2 stops16h 55m
Delta
Deal found 4/5![Delta logo]()
$847
This Icelandair deal was found by Cheapflights users on 4/6. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Fri 11/202:35 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Deal found 4/6![Icelandair logo]()
$879
This United Airlines deal was found by Cheapflights users on 4/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:40 am
BCN
- SEA
2 stops16h 42m
United Airlines
Fri 9/2511:50 pm
SEA
- BCN
2 stops29h 15m
United Airlines
Deal found 4/5![United Airlines logo]()
$915
This KLM deal was found by Cheapflights users on 4/5. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/31:20 pm
BCN
- SEA
Nonstop11h 10m
Multiple Airlines
Mon 6/86:50 pm
SEA
- BCN
1 stop16h 30m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$842
This Delta deal was found by Cheapflights users on 4/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:10 am
BCN
- SEA
2 stops18h 33m
Delta
Tue 5/263:25 pm
SEA
- BCN
Nonstop10h 45m
Delta
Deal found 4/8![Delta logo]()
$892
This Icelandair deal was found by Cheapflights users on 4/9. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/83:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Mon 5/187:00 pm
SEA
- BCN
1 stop34h 45m
Icelandair
Deal found 4/9![Icelandair logo]()
$907
This United Airlines deal was found by Cheapflights users on 4/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:40 am
BCN
- SEA
1 stop14h 40m
United Airlines
Sun 5/105:00 am
SEA
- BCN
1 stop24h 20m
United Airlines
Deal found 4/7![United Airlines logo]()
$916
This KLM deal was found by Cheapflights users on 4/7. 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.
Fri 5/81:20 pm
BCN
- SEA
Nonstop11h 13m
Multiple Airlines
Mon 5/186:40 pm
SEA
- BCN
1 stop13h 30m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$843
Last-minute flights from Barcelona-El Prat to SeattleDiscover last-minute flight deals from Barcelona-El Prat to Seattle. Data last updated April 9, 2026 and is based on user searches.
Discover last-minute flight deals from Barcelona-El Prat to Seattle. Data last updated April 9, 2026 and is based on user searches.
This deal was found by Cheapflights users on 4/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Tue 5/53:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Deal found 4/9![Icelandair logo]()
$690
This deal was found by Cheapflights users on 4/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/153:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Sat 5/93:40 pm
SEA
- BCN
1 stop14h 05m
Icelandair
Deal found 4/9![Icelandair logo]()
$691
This deal was found by Cheapflights users on 4/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/203:45 pm
BCN
- SEA
1 stop13h 55m
Icelandair
Sat 5/163:40 pm
SEA
- BCN
1 stop15h 45m
Icelandair
Deal found 4/9![Icelandair logo]()
$718
This Mytrip deal was found by Cheapflights users on 4/7. 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.
Thu 4/237:20 am
BCN
- SEA
2 stops19h 35m
Multiple Airlines
Mon 4/273:40 pm
SEA
- BCN
2 stops24h 35m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 4/9. 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.
Wed 5/133:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Wed 9/169:55 pm
SEA
- BCN
2 stops30h 30m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$733
This Flighttix deal was found by Cheapflights users on 4/7. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:15 am
BCN
- SEA
1 stop14h 45m
Condor
Wed 9/165:40 pm
SEA
- BCN
1 stop13h 25m
Condor
Deal found 4/7![Condor logo]()
$708
This Mytrip deal was found by Cheapflights users on 4/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:00 pm
BCN
- SEA
3 stops32h 20m
Multiple Airlines
Tue 5/263:40 pm
SEA
- BCN
3 stops22h 05m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$712
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 5/163:00 pm
BCN
- SEA
1 stop27h 40m
Multiple Airlines
Wed 9/169:55 pm
SEA
- BCN
2 stops30h 30m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$734
This Mytrip deal was found by Cheapflights users on 4/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/217:20 am
BCN
- SEA
2 stops22h 20m
Multiple Airlines
Mon 5/253:40 pm
SEA
- BCN
2 stops24h 35m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$696
This Mytrip deal was found by Cheapflights users on 4/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:30 am
BCN
- SEA
2 stops33h 15m
Multiple Airlines
Thu 5/283:40 pm
SEA
- BCN
2 stops24h 55m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$704
One-way flights from Barcelona-El Prat to SeattleSearch for one-way flight options from Barcelona-El Prat to Seattle. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
Search for one-way flight options from Barcelona-El Prat to Seattle. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:00 pm
BCN
- SEA
2 stops25h 04m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Sun 5/103:00 pm
BCN
- SEA
2 stops50h 58m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:45 am
BCN
- SEA
2 stops22h 00m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 4/5. 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.
Sun 5/248:55 am
BCN
- SEA
3 stops57h 45m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Fri 6/55:45 am
BCN
- SEA
2 stops19h 15m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 4/7. 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.
Thu 6/46:10 am
BCN
- SEA
3 stops42h 50m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Sun 5/103:00 pm
BCN
- SEA
1 stop36h 45m
WestJet
Deal found 4/8![WestJet logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:00 pm
BCN
- SEA
1 stop27h 40m
WestJet
Deal found 4/4![WestJet logo]()
$399
This FlightHub deal was found by Cheapflights users on 4/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:00 pm
BCN
- SEA
1 stop27h 40m
WestJet
Deal found 4/4![WestJet logo]()
$404
Find flight deals from Barcelona-El Prat to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $581 (Rumbo) |
One-way from | $378 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $837 |
Cheapflights Fare Finder
Customize your flight search to find flights from Barcelona-El Prat to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Tue 10/6
10:25 am-3:40 pm
1 stop14h 15m
Seattle/Tacoma Intl
Mon 10/12
6:10 pm-10:10 pm
1 stop19h 00m
$686
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 5/15
8:00 am-10:27 pm
2 stops23h 27m
Seattle/Tacoma Intl
Tue 5/26
6:05 pm-10:10 pm
1 stop19h 05m
$819
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 6/3
1:20 pm-3:30 pm
Nonstop11h 10m
Seattle/Tacoma Intl
Mon 6/8
6:50 pm-8:20 pm
1 stop16h 30m
$842
Quickest round-trip
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 5/8
1:20 pm-3:33 pm
Nonstop11h 13m
Seattle/Tacoma Intl
Mon 5/18
6:40 pm-5:10 pm
1 stop13h 30m
$843
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 6/3
1:20 pm-3:30 pm
Nonstop11h 10m
Seattle/Tacoma Intl
Mon 6/8
2:30 pm-4:25 pm
2 stops16h 55m
$847
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Tue 10/6
3:45 pm-8:40 pm
1 stop13h 55m
Seattle/Tacoma Intl
Fri 11/20
2:35 pm-1:40 pm
1 stop14h 05m
$879
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Sat 5/16
11:10 am-8:43 pm
2 stops18h 33m
Seattle/Tacoma Intl
Tue 5/26
3:25 pm-11:10 am
Nonstop10h 45m
$892
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 5/8
3:45 pm-8:40 pm
1 stop13h 55m
Seattle/Tacoma Intl
Mon 5/18
7:00 pm-2:45 pm
1 stop34h 45m
$907
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 9/9
6:40 am-2:22 pm
2 stops16h 42m
Seattle/Tacoma Intl
Fri 9/25
11:50 pm-2:05 pm
2 stops29h 15m
$915
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Tue 4/21
6:40 am-12:20 pm
1 stop14h 40m
Seattle/Tacoma Intl
Sun 5/10
5:00 am-2:20 pm
1 stop24h 20m
$916
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Barcelona-El Prat to Seattle
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Barcelona-El Prat to Seattle in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Barcelona-El Prat Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Barcelona-El Prat Airport-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Barcelona-El Prat Airport-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Barcelona-El Prat Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Barcelona-El Prat to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Barcelona-El Prat with our price prediction graph.
BCN-SEA
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 Barcelona-El Prat Airport to Seattle
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How far ahead should I book a flight from Barcelona-El Prat Airport to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Barcelona-El Prat to Seattle. Price data was last updated on April 3, 2026.
The price you pay for your flight from Barcelona-El Prat Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Barcelona-El Prat Airport to Seattle?
Currently, May is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $576). Flying from Barcelona-El Prat Airport to Seattle in October is currently the most expensive (average of $780). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Barcelona-El Prat Airport to Seattle?
What’s the top layover airport for flights from Barcelona-El Prat Airport to Seattle?
Share of 1-stop round-trip flights from Barcelona-El Prat Airport to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.
Frankfurt am Main (FRA) – chosen by Cheapflights users on 80% of 1-stop itineraries from Barcelona-El Prat Airport to Seattle on Cheapflights.
What’s the cheapest layover airport for flights from Barcelona-El Prat Airport to Seattle?
Average round-trip fare for 1-stop flights from Barcelona-El Prat Airport to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $837.
What’s the fastest layover option from Barcelona-El Prat Airport to Seattle?
Shortest average travel time for 1-stop one-way flights from Barcelona-El Prat Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for 1-stop routes: 14h 35m.
Which airport typically offers the quickest layover for flights from Barcelona-El Prat Airport to Seattle?
Average layover duration for 1-stop one-way flights from Barcelona-El Prat Airport to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 1h 45m.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated April 9, 2026.
See what other customers who have flown with Delta,Lufthansa, andBritish Airways from Barcelona-El Prat Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Boarding
8.1
Comfort
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Barcelona-El Prat to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
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Leavenworth
Snoqualmie
Tumwater
Tukwila
Renton
Puyallup
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
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Barcelona-El Prat and Seattle flights
Browse other Barcelona-El Prat and Seattle flight options. Last updated on April 9, 2026.
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Browse through other flights departing from Barcelona-El Prat. Flights are based on user searches made on Cheapflights and were last updated on April 9, 2026.
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Top 4 airlines flying from Barcelona-El Prat to Seattle
Discover the top 4 airlines that operate flights from Barcelona-El Prat to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$600 | Average$700 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$712 | Average$819 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$765 | Average$851 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$814 | Average$840 | FlexibilityNo cancel fee | On-timeN/A |