$343+ Cheap flights from Seattle (SEA) to Porto (OPO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OPO
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Porto 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.Cheap flight deals from Seattle to Porto
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to PortoExplore the most affordable flight options available from Seattle to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Seattle to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Tue 10/135:50 am -
2 stops17h 10m
Thu 10/228:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$586
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:12 am -
2 stops26h 48m
Mon 11/29:55 pm -
2 stops26h 55m
Deal found 9/11![Iberia logo]()
$621
This Gotogate deal was found by Cheapflights users on 9/10. 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 9/306:50 pm -
1 stop20h 35m
Wed 10/78:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$637
This FlightHub deal was found by Cheapflights users on 9/10. 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 10/66:50 pm -
1 stop20h 35m
Wed 10/148:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$646
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:20 pm -
1 stop15h 10m
Wed 10/218:40 pm -
2 stops31h 04m
Deal found 9/9![Multiple Airlines logo]()
$650
This Justfly.com deal was found by Cheapflights users on 9/10. 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 10/66:50 pm -
1 stop20h 35m
Wed 10/146:20 am -
1 stop18h 39m
Deal found 9/10![Lufthansa logo]()
$657
This oojo deal was found by Cheapflights users on 9/10. 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 9/306:50 pm -
1 stop20h 35m
Wed 10/76:20 am -
1 stop18h 39m
Deal found 9/10![Lufthansa logo]()
$658
This Travelocity deal was found by Cheapflights users on 9/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:12 am -
2 stops21h 33m
Thu 10/228:40 pm -
2 stops31h 35m
Deal found 9/9![Iberia logo]()
$660
Best flights from Seattle to PortoDiscover carefully curated flight deals from Seattle to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Seattle to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:14 pm -
2 stops20h 51m
Thu 10/227:55 pm -
1 stop23h 40m
Deal found 9/9![British Airways logo]()
$688
This FlightHub deal was found by Cheapflights users on 9/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:50 am -
2 stops36h 10m
Tue 11/31:45 pm -
1 stop31h 15m
Deal found 9/6![Lufthansa logo]()
$740
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:40 pm -
1 stop19h 25m
Tue 11/35:55 am -
1 stop15h 55m
Deal found 9/6![Delta logo]()
$745
This KLM deal was found by Cheapflights users on 9/11. 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 9/221:30 pm -
1 stop17h 55m
Mon 9/287:55 pm -
1 stop23h 52m
Deal found 9/11![KLM logo]()
$758
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:50 am -
1 stop18h 40m
Thu 12/1012:35 pm -
1 stop18h 02m
Deal found 9/6![United Airlines logo]()
$761
This Delta deal was found by Cheapflights users on 9/8. 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.
Mon 1/256:00 am -
2 stops20h 35m
Wed 2/105:00 am -
1 stop14h 47m
Deal found 9/8![Delta logo]()
$747
This Delta deal was found by Cheapflights users on 9/11. 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.
Mon 9/219:43 am -
2 stops21h 42m
Tue 9/295:00 am -
1 stop19h 35m
Deal found 9/11![Delta logo]()
$762
This Delta deal was found by Cheapflights users on 9/11. 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.
Mon 9/2811:11 am -
2 stops20h 14m
Wed 10/75:00 am -
2 stops19h 37m
Deal found 9/11![Delta logo]()
$773
This Delta deal was found by Cheapflights users on 9/10. 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.
Fri 12/116:00 am -
2 stops20h 35m
Fri 12/255:00 am -
1 stop14h 50m
Deal found 9/10![Delta logo]()
$792
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/113:25 pm -
1 stop22h 35m
Mon 1/255:00 am -
1 stop14h 50m
Deal found 9/9![Delta logo]()
$793
Last-minute flights from Seattle to PortoDiscover last-minute flight deals from Seattle to Porto. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Porto. Data last updated September 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/10. 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 9/306:50 pm -
1 stop20h 35m
Wed 10/78:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$637
This oojo deal was found by Cheapflights users on 9/10. 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 9/306:50 pm -
1 stop20h 35m
Wed 10/76:20 am -
1 stop18h 39m
Deal found 9/10![Lufthansa logo]()
$658
This Travelocity deal was found by Cheapflights users on 9/9. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:12 am -
2 stops21h 33m
Thu 10/228:40 pm -
2 stops31h 35m
Deal found 9/9![Iberia logo]()
$660
This FlightHub deal was found by Cheapflights users on 9/10. 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 10/66:50 pm -
1 stop20h 35m
Wed 10/148:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$646
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:20 pm -
1 stop15h 10m
Wed 10/218:40 pm -
2 stops31h 04m
Deal found 9/9![Multiple Airlines logo]()
$650
This Justfly.com deal was found by Cheapflights users on 9/10. 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 10/66:50 pm -
1 stop20h 35m
Wed 10/146:20 am -
1 stop18h 39m
Deal found 9/10![Lufthansa logo]()
$657
This Mytrip deal was found by Cheapflights users on 9/10. 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.
Tue 10/135:50 am -
2 stops17h 10m
Thu 10/228:40 am -
2 stops17h 52m
Deal found 9/10![Multiple Airlines logo]()
$586
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:12 am -
2 stops26h 48m
Mon 11/29:55 pm -
2 stops26h 55m
Deal found 9/11![Iberia logo]()
$621
One-way flights from Seattle to PortoSearch for one-way flight options from Seattle to Porto. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Seattle to Porto. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/277:35 pm -
3 stops34h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/22:35 pm -
3 stops40h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$360
This KLM deal was found by Cheapflights users on 9/11. 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 1/17:20 am -
1 stop16h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![KLM logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Thu 11/122:35 pm -
3 stops24h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 9/11. 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.
Fri 1/16:00 am -
2 stops20h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$406
This Thrive Travel deal was found by Cheapflights users on 9/10. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:50 pm -
1 stop20h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Lufthansa logo]()
$442
This Justfly.com deal was found by Cheapflights users on 9/10. 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 10/135:50 am -
2 stops41h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Air Canada logo]()
$462
This Delta deal was found by Cheapflights users on 9/11. 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.
Sun 10/186:40 pm -
1 stop19h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 1/12:50 pm -
3 stops45h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$473
Find flight deals from Seattle to Porto
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Porto (OPO). 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 September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $586 (Mytrip) |
One-way from | $343 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $1,029 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Porto 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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Seattle to Porto that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Sun 9/27
7:35 pm-1:35 pm
3 stops34h 00m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$343
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Tue 10/13
6:50 pm-11:25 pm
1 stop20h 35m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$442
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Sun 10/18
10:50 am-6:50 am
2 stops36h 00m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$462
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Sun 10/18
6:40 pm-10:00 pm
1 stop19h 20m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$463
Quickest round-trip
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Mon 11/2
6:30 am-9:30 am
1 stop19h 00m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$463
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Tue 10/13
12:00 pm-7:00 am
3 stops35h 00m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$518
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Sun 9/27
6:45 pm-10:00 pm
1 stop19h 15m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$539
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Fri 10/2
6:40 pm-10:30 pm
1 stop19h 50m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$599
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Sun 9/27
7:15 pm-3:50 pm
1 stop36h 35m
Porto
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$626
SeattlePorto
SEA Seattle/Tacoma Intl - OPO Porto
SEAOPO
Seattle/Tacoma Intl
Mon 10/5
3:14 pm-8:05 pm
2 stops20h 51m
Porto
Thu 10/22
7:55 pm-11:35 am
1 stop23h 40m
$688
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Seattle to Porto
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 Seattle to Porto in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Porto flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Porto 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 Seattle-Porto 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 Seattle to Porto
Have a flexible travel schedule? Discover the best time to fly to Porto from Seattle with our price prediction graph.
SEA-OPO
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 Porto
How far ahead should I book a flight from Seattle to Porto?
Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Porto. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Seattle to Porto?
Currently, January is the cheapest month in which you can book a flight from Seattle to Porto (average of $498). Flying from Seattle to Porto in December is currently the most expensive (average of $1,436). 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 Seattle to Porto?
Airfare is below average for this route at the moment.
Seattle to Porto flights typically cost between $906 and $1,127 in October.The cheapest round-trip price found within the last 5 days was $586 on Multiple Airlines (Oct 13-Oct 22).
Reviews of airlines servicing Porto
Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated September 11, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andAir France from Seattle to Porto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Crew
8.4
Boarding
7.8
Food
7.3
Comfort
7.7
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
4.0
OkayAbhisek,Aug 2026
JFK - AMS
Related info for your journey
Find useful and relevant information for your journey from Seattle to Porto. 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 Porto?
Book flights to Porto if you plan to visit one of these locationsVila Nova de Gaia
Arcos de Valdevez
Coimbra
Aveiro
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Find flights from Seattle to Porto, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Porto flights
Browse other Seattle and Porto flight options. Last updated on September 11, 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 September 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Porto
Explore flights to Porto departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Top 6 airlines flying from Seattle to Porto
Discover the top 6 airlines that operate flights from Seattle to Porto. 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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$490 | Average$950 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$503 | Average$867 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$630 | Average$1,020 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$660 | Average$823 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$691 | Average$884 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$905 | Average$1,029 | FlexibilityNo cancel fee | On-time77% |