
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $575 (Expedia) |
One-way from | $315 (Mytrip) |
Popular in | July |
Cheapest in | September |
Average price | $814 |
Good one-way deal | $1,012 or less |
Fly from
Fly to
Route
Depart
Return
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 9/9
8:00 am-11:12 pm
2 stops24h 12m
Seattle/Tacoma Intl
Fri 9/25
6:00 pm-4:05 pm
1 stop13h 05m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Mon 6/8
8:00 am-7:48 pm
2 stops20h 48m
Seattle/Tacoma Intl
Thu 6/11
6:05 pm-10:10 pm
1 stop19h 05m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 10/16
10:15 am-4:00 pm
1 stop14h 45m
Seattle/Tacoma Intl
Thu 10/22
11:55 am-4:05 pm
2 stops19h 10m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Thu 6/4
12:10 pm-5:15 pm
1 stop38h 05m
Seattle/Tacoma Intl
Mon 6/8
7:10 pm-11:15 pm
1 stop19h 05m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 10/14
1:20 pm-4:01 pm
Nonstop11h 41m
Seattle/Tacoma Intl
Tue 11/3
11:25 am-3:00 pm
2 stops18h 35m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 10/16
1:20 pm-4:01 pm
Nonstop11h 41m
Seattle/Tacoma Intl
Thu 10/22
1:30 pm-2:50 pm
1 stop16h 20m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Fri 6/12
1:20 pm-3:35 pm
Nonstop11h 15m
Seattle/Tacoma Intl
Fri 6/19
5:45 pm-4:25 pm
1 stop13h 40m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Thu 6/11
6:20 am-6:36 pm
2 stops21h 16m
Seattle/Tacoma Intl
Thu 6/18
3:35 pm-11:10 am
Nonstop10h 35m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Thu 9/24
7:00 pm-1:45 pm
1 stop27h 45m
Seattle/Tacoma Intl
Mon 9/28
7:20 am-6:10 pm
2 stops25h 50m
BarcelonaSeattle
BCN - SEA
BCNSEA
Barcelona-El Prat
Wed 6/3
1:20 pm-3:30 pm
Nonstop11h 10m
Seattle/Tacoma Intl
Wed 6/10
1:30 pm-5:10 pm
1 stop18h 40m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
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 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, September is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to Seattle (average of $802). Flying from Barcelona-El Prat Airport to Seattle in July is currently the most expensive (average of $984). 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.
When flying from Barcelona-El Prat Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Frankfurt am Main (FRA) – chosen by Cheapflights users on 80% of 1-stop itineraries from Barcelona-El Prat Airport to Seattle on Cheapflights.
Frankfurt am Main (FRA) is the most affordable 1-stop option, with an average round-trip price of $837.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for 1-stop routes: 14h 35m.
Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 1h 45m.
Entertainment
Comfort
Overall
Crew
Boarding
Food
Reviews
Anonymous,May 2026
SEA - KOA
Entertainment
Comfort
Overall
Crew
Boarding
Food
Reviews
Anonymous,May 2026
SEA - KOA
Entertainment
Comfort
Overall
Crew
Boarding
Food
Reviews
Anonymous,May 2026
SEA - KOA
Entertainment
Comfort
Overall
Crew
Boarding
Food
Reviews
Anonymous,May 2026
SEA - KOA
Entertainment
Comfort
Overall
Crew
Boarding
Food
Reviews
Anonymous,May 2026
SEA - KOA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$600 | Average$700 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$662 | Average$836 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$777 | Average$819 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$814 | Average$840 | FlexibilityNo cancel fee | On-timeN/A |