$252+ Cheap flights from Seattle (SEA) to Porto (OPO)
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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OPO
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Porto with Cheapflights
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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
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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
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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 July 2, 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 July 2, 2026.
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- OPO
2 stops23h 40m
Multiple Airlines
Wed 8/266:30 pm
OPO
- SEA
3 stops34h 37m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$707
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:55 pm
SEA
- OPO
1 stop19h 35m
Scandinavian Airlines
Fri 9/45:55 pm
OPO
- SEA
1 stop27h 50m
Scandinavian Airlines
Deal found 6/29![Scandinavian Airlines logo]()
$709
This Expedia deal was found by Cheapflights users on 7/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:50 pm
SEA
- OPO
1 stop15h 00m
British Airways
Wed 11/188:20 am
OPO
- SEA
2 stops24h 15m
British Airways
Deal found 7/1![British Airways logo]()
$759
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- OPO
2 stops23h 40m
Multiple Airlines
Sun 8/232:20 pm
OPO
- SEA
3 stops29h 35m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$763
This Travelocity deal was found by Cheapflights users on 6/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:50 pm
SEA
- OPO
2 stops17h 10m
Iberia
Mon 11/239:55 pm
OPO
- SEA
2 stops27h 00m
Iberia
Deal found 6/27![Iberia logo]()
$771
This Mytrip deal was found by Cheapflights users on 6/30. 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 9/165:40 pm
SEA
- OPO
3 stops30h 20m
Multiple Airlines
Tue 9/2210:00 pm
OPO
- SEA
3 stops25h 40m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$775
This British Airways deal was found by Cheapflights users on 6/30. 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 11/910:31 am
SEA
- OPO
2 stops25h 29m
Multiple Airlines
Mon 11/238:40 pm
OPO
- SEA
2 stops31h 35m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$781
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 July 2, 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 July 2, 2026.
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:20 am
SEA
- OPO
1 stop17h 45m
Delta
Wed 11/255:00 am
OPO
- SEA
1 stop14h 47m
Delta
Deal found 7/1![Delta logo]()
$802
This KLM deal was found by Cheapflights users on 6/30. 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 11/92:05 pm
SEA
- OPO
1 stop23h 55m
Multiple Airlines
Mon 11/2311:30 am
OPO
- SEA
1 stop31h 55m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$822
This KLM deal was found by Cheapflights users on 6/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/61:30 pm
SEA
- OPO
1 stop17h 55m
KLM
Thu 10/295:00 am
OPO
- SEA
1 stop14h 47m
KLM
Deal found 6/28![KLM logo]()
$835
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/77:00 am
SEA
- OPO
2 stops16h 00m
United Airlines
Thu 10/1511:40 am
OPO
- SEA
3 stops40h 57m
United Airlines
Deal found 6/30![United Airlines logo]()
$872
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:40 pm
SEA
- OPO
1 stop19h 20m
Delta
Wed 8/265:00 am
OPO
- SEA
1 stop14h 37m
Delta
Deal found 6/28![Delta logo]()
$835
This United deal was found by Cheapflights users on 6/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:00 pm
SEA
- OPO
3 stops35h 00m
Multiple Airlines
Thu 10/156:00 am
OPO
- SEA
2 stops20h 32m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$839
This KLM deal was found by Cheapflights users on 7/1. 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.
Sun 8/167:15 am
SEA
- OPO
1 stop19h 10m
KLM
Sun 8/237:00 pm
OPO
- SEA
1 stop24h 37m
KLM
Deal found 7/1![KLM logo]()
$896
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:45 pm
SEA
- OPO
1 stop19h 15m
Delta
Thu 10/155:00 am
OPO
- SEA
1 stop19h 35m
Delta
Deal found 6/28![Delta logo]()
$835
This United deal was found by Cheapflights users on 6/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:00 pm
SEA
- OPO
3 stops35h 00m
Multiple Airlines
Thu 10/296:00 am
OPO
- SEA
2 stops22h 57m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$839
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:05 pm
SEA
- OPO
1 stop23h 55m
Delta
Sat 11/215:00 am
OPO
- SEA
1 stop14h 47m
Delta
Deal found 6/28![Delta logo]()
$851
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:35 pm
SEA
- OPO
1 stop16h 50m
Delta
Sat 11/215:00 am
OPO
- SEA
1 stop14h 47m
Delta
Deal found 6/28![Delta logo]()
$856
Last-minute flights from Seattle to PortoDiscover last-minute flight deals from Seattle to Porto. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Porto. Data last updated July 2, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:20 pm
SEA
- OPO
2 stops51h 40m
Lufthansa
Tue 8/2512:15 pm
OPO
- SEA
2 stops34h 07m
Lufthansa
Deal found 7/2![Lufthansa logo]()
$834
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:40 pm
SEA
- OPO
1 stop19h 20m
Delta
Thu 8/205:00 am
OPO
- SEA
1 stop14h 37m
Delta
Deal found 6/28![Delta logo]()
$835
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:00 am
SEA
- OPO
2 stops28h 30m
Multiple Airlines
Sun 8/238:20 pm
OPO
- SEA
2 stops32h 47m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$775
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- OPO
2 stops23h 40m
Multiple Airlines
Wed 8/266:30 pm
OPO
- SEA
3 stops34h 37m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$707
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:00 am
SEA
- OPO
2 stops23h 40m
Multiple Airlines
Sun 8/232:20 pm
OPO
- SEA
3 stops29h 35m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$763
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:40 pm
SEA
- OPO
1 stop19h 50m
Delta
Wed 8/265:00 am
OPO
- SEA
1 stop19h 27m
Delta
Deal found 7/1![Delta logo]()
$836
This Trip.com deal was found by Cheapflights users on 6/28. 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.
Thu 8/203:40 pm
SEA
- OPO
2 stops19h 05m
Multiple Airlines
Thu 8/2710:10 am
OPO
- SEA
2 stops33h 35m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$816
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:55 pm
SEA
- OPO
1 stop19h 35m
Scandinavian Airlines
Fri 9/45:55 pm
OPO
- SEA
1 stop27h 50m
Scandinavian Airlines
Deal found 6/29![Scandinavian Airlines logo]()
$709
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 July 2, 2026.
Search for one-way flight options from Seattle to Porto. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 8/2811:25 pm
SEA
- OPO
2 stops37h 55m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/28. 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.
Sat 10/38:00 am
SEA
- OPO
3 stops28h 15m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:00 pm
SEA
- OPO
2 stops33h 00m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$375
This Cheapflightsfares deal was found by Cheapflights users on 6/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:20 pm
SEA
- OPO
1 stop16h 20m
British Airways
Deal found 6/28![British Airways logo]()
$423
This oojo deal was found by Cheapflights users on 7/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:50 pm
SEA
- OPO
1 stop20h 35m
Lufthansa
Deal found 7/1![Lufthansa logo]()
$460
This KAYAK deal was found by Cheapflights users on 6/29. 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.
Sat 8/297:20 pm
SEA
- OPO
2 stops51h 40m
Lufthansa
Deal found 6/29![Lufthansa logo]()
$461
This Justfly.com deal was found by Cheapflights users on 6/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:50 am
SEA
- OPO
2 stops17h 10m
Air Canada
Deal found 6/28![Air Canada logo]()
$462
This Delta deal was found by Cheapflights users on 7/2. 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.
Sun 9/131:30 pm
SEA
- OPO
1 stop18h 00m
Delta
Deal found 7/2![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:13 pm
SEA
- OPO
2 stops29h 47m
United Airlines
Deal found 6/29![United Airlines logo]()
$467
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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $707 (Mytrip) |
One-way from | $252 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $901 |
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 2,558,603 searches. Data last updated July 2, 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 - OPO
SEAOPO
Seattle/Tacoma Intl
Sun 11/8
7:20 am-9:05 am
1 stop17h 45m
Porto
Wed 11/25
5:00 am-11:47 am
1 stop14h 47m
$802
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Mon 11/9
2:05 pm-10:00 pm
1 stop23h 55m
Porto
Mon 11/23
11:30 am-11:25 am
1 stop31h 55m
$822
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Tue 10/6
1:30 pm-3:25 pm
1 stop17h 55m
Porto
Thu 10/29
5:00 am-12:47 pm
1 stop14h 47m
$835
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Wed 8/12
6:40 pm-10:00 pm
1 stop19h 20m
Porto
Wed 8/26
5:00 am-11:37 am
1 stop14h 37m
$835
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Wed 10/7
6:45 pm-10:00 pm
1 stop19h 15m
Porto
Thu 10/15
5:00 am-4:35 pm
1 stop19h 35m
$835
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Tue 10/6
12:00 pm-7:00 am
3 stops35h 00m
Porto
Thu 10/15
6:00 am-6:32 pm
2 stops20h 32m
$839
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Tue 10/6
12:00 pm-7:00 am
3 stops35h 00m
Porto
Thu 10/29
6:00 am-9:57 pm
2 stops22h 57m
$839
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Mon 11/9
2:05 pm-10:00 pm
1 stop23h 55m
Porto
Sat 11/21
5:00 am-11:47 am
1 stop14h 47m
$851
Quickest round-trip
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Wed 11/11
2:35 pm-3:25 pm
1 stop16h 50m
Porto
Sat 11/21
5:00 am-11:47 am
1 stop14h 47m
$856
SeattlePorto
SEA - OPO
SEAOPO
Seattle/Tacoma Intl
Wed 10/7
7:00 am-7:00 am
2 stops16h 00m
Porto
Thu 10/15
11:40 am-8:37 pm
3 stops40h 57m
$872
Showing 1-10 of 18 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 July.
| 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 $1,466). 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?
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 July 2, 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
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
Crew
8.4
Boarding
7.8
Comfort
7.7
Food
7.3
Overall
7.8
Entertainment
7.2
Reviews
1 / 20
6.0
GoodAnonymous,Apr 2026
OKC - ATL
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
Aveiro
Arcos de Valdevez
Coimbra
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Seattle and Porto flights
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Top 7 airlines flying from Seattle to Porto
Discover the top 7 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 2,558,603 searches. Data last updated July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$490 | Average$950 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$503 | Average$932 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$588 | Average$1,019 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$654 | Average$909 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$660 | Average$823 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$685 | Average$880 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$905 | Average$1,099 | FlexibilityNo cancel fee | On-time77% |