What are the cheapest airlines flying from Porto to Seattle round-trip?

Currently priced at $748, KLM will fly you from Porto to Seattle and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Delta - these airlines can fly you to your destination from $799 and $801, respectively. Users have found that KLM is 21% cheaper than the other options available to this destination.

What is the cheapest day to fly from Porto to Seattle?

Travelers seeking maximum savings on their Porto to Seattle flight should consider departing on Wednesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Porto to Seattle?

Users have found that leaving on a Sunday can be a cost-effective option. It’s possible to save up to 37% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from Porto to Seattle?

October is one of the best times of the year to fly to Seattle from Porto. Prices for October average $955 per person but you can even find prices for as low as $332. The most expensive prices can be found in the month of June. Opting for a October flight can save you 53% on your journey compared to booking in June

What is the cheapest time of day to fly from OPO to SEA?

One of the essential ways to save on airfare from Porto to Seattle is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

Most accurate provider : When it comes to deals on Porto-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Porto-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 Porto-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Porto to Seattle that include hotel bookings?

Yes. In addition to deals on Porto to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Porto to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Seattle.

Can I find deals for business class flights from Porto to Seattle?

Yes. Cheapflights offers flight deals from Porto to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$545+ Flights from Porto, Portugal to Seattle, Washington

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Cheap flight deals from Porto to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	October
Round-trip from	$748 (KLM)
One-way from	$545 (Mytrip)

Provider with most accurate pricing for Porto-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Porto-Seattle/Tacoma Intl flights.

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High demand for flights, 35% potential price rise

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Best time to find cheap flights, 65% potential price drop

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From Porto to Seattle/Tacoma Intl

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One-way flight from Porto to Seattle/Tacoma Intl

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Find flight deals from Porto to Seattle

Cheapest flights from Porto to Seattle
Explore the most affordable flight options available from Porto to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

lun. 12/211:00 amOPO - SEA

1 stop38h 05mTurkish Airlines

sáb. 12/77:00 pmSEA - OPO

1 stop36h 25mTurkish Airlines

Deal found 11/20

$3,015

vie. 12/138:20 amOPO - SEA

2 stops22h 55mIberia

dom. 12/156:50 pmSEA - OPO

2 stops28h 50mIberia

Deal found 11/20

$3,389

mié. 12/118:20 amOPO - SEA

2 stops22h 49mMultiple Airlines

dom. 12/156:50 pmSEA - OPO

2 stops17h 10mMultiple Airlines

Deal found 11/20

$3,417

Best flights from Porto to Seattle
Discover carefully curated flight deals from Porto to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated noviembre 21, 2024.

dom. 1/1211:15 amOPO - SEA

1 stop32h 35mKLM

sáb. 1/189:54 amSEA - OPO

2 stops16h 56mKLM

Deal found 11/20

$748

lun. 1/134:10 pmOPO - SEA

2 stops27h 10mMultiple Airlines

dom. 1/199:54 amSEA - OPO

2 stops17h 01mMultiple Airlines

Deal found 11/20

$775

lun. 1/131:45 pmOPO - SEA

1 stop31h 35mLufthansa

dom. 1/1911:05 amSEA - OPO

2 stops17h 45mLufthansa

Deal found 11/20

$799

dom. 1/1211:15 amOPO - SEA

1 stop32h 35mDelta

sáb. 1/1810:55 pmSEA - OPO

2 stops28h 00mDelta

Deal found 11/20

$801

dom. 1/1212:30 pmOPO - SEA

1 stop31h 40mUnited Airlines

vie. 1/247:00 amSEA - OPO

3 stops44h 40mUnited Airlines

Deal found 11/20

$815

lun. 1/2011:00 amOPO - SEA

2 stops37h 16mTurkish Airlines

vie. 1/317:00 pmSEA - OPO

1 stop36h 30mTurkish Airlines

Deal found 11/20

$2,722

vie. 12/138:20 amOPO - SEA

2 stops22h 55mIberia

dom. 12/156:50 pmSEA - OPO

2 stops28h 50mIberia

Deal found 11/20

$3,389

lun. 1/208:30 amOPO - SEA

3 stops21h 30mAir Canada

vie. 1/316:05 amSEA - OPO

2 stops21h 35mAir Canada

Deal found 11/20

$3,817

Last-minute flights from Porto to Seattle
Discover last-minute flight deals from Porto to Seattle. Data last updated noviembre 21, 2024 and is based on user searches.

lun. 12/211:00 amOPO - SEA

1 stop38h 05mTurkish Airlines

sáb. 12/77:00 pmSEA - OPO

1 stop36h 25mTurkish Airlines

Deal found 11/20

$3,015

mié. 12/118:20 amOPO - SEA

2 stops22h 49mMultiple Airlines

dom. 12/156:50 pmSEA - OPO

2 stops17h 10mMultiple Airlines

Deal found 11/20

$3,417

vie. 12/138:20 amOPO - SEA

2 stops22h 55mIberia

dom. 12/156:50 pmSEA - OPO

2 stops28h 50mIberia

Deal found 11/20

$3,389

One-way flights from Porto to Seattle
Search for one-way flight options from Porto to Seattle. Find affordable one-way fares based on user searches. Data last updated noviembre 21, 2024.

jue. 3/278:50 amOPO - SEA

3 stops32h 10mMultiple Airlines

Deal found 11/20

$545

jue. 3/274:25 pmOPO - SEA

1 stop32h 40mTurkish Airlines

Deal found 11/20

$625

Find flights from Porto to Seattle within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortoSeattle

OPO - SEA

OPOSEA

Porto

dom. 1/12

11:15 am-11:50 am

1 stop32h 35m

Seattle/Tacoma Intl

sáb. 1/18

9:54 am-10:50 am

2 stops16h 56m

$748

PortoSeattle

OPO - SEA

OPOSEA

Porto

lun. 1/13

4:10 pm-11:20 am

2 stops27h 10m

Seattle/Tacoma Intl

dom. 1/19

9:54 am-10:55 am

2 stops17h 01m

$775

PortoSeattle

OPO - SEA

OPOSEA

Porto

lun. 1/13

1:45 pm-1:20 pm

1 stop31h 35m

Seattle/Tacoma Intl

dom. 1/19

11:05 am-12:50 pm

2 stops17h 45m

$799

PortoSeattle

OPO - SEA

OPOSEA

Porto

dom. 1/12

11:15 am-11:50 am

1 stop32h 35m

Seattle/Tacoma Intl

sáb. 1/18

10:55 pm-10:55 am

2 stops28h 00m

$801

PortoSeattle

OPO - SEA

OPOSEA

Porto

dom. 1/12

12:30 pm-12:10 pm

1 stop31h 40m

Seattle/Tacoma Intl

vie. 1/24

7:00 am-11:40 am

3 stops44h 40m

$815

PortoSeattle

OPO - SEA

OPOSEA

Porto

lun. 1/20

11:00 am-4:16 pm

2 stops37h 16m

Seattle/Tacoma Intl

vie. 1/31

7:00 pm-3:30 pm

1 stop36h 30m

$2,722

PortoSeattle

OPO - SEA

OPOSEA

Porto

vie. 12/13

8:20 am-11:15 pm

2 stops22h 55m

Seattle/Tacoma Intl

dom. 12/15

6:50 pm-7:40 am

2 stops28h 50m

$3,389

PortoSeattle

OPO - SEA

OPOSEA

Porto

lun. 1/20

8:30 am-10:00 pm

3 stops21h 30m

Seattle/Tacoma Intl

vie. 1/31

6:05 am-11:40 am

2 stops21h 35m

$3,817

PortoSeattle

OPO - SEA

OPOSEA

Porto

jue. 3/27

8:50 am-10:00 am

3 stops32h 10m

$545

PortoSeattle

OPO - SEA

OPOSEA

Porto

jue. 3/27

4:25 pm-6:05 pm

1 stop32h 40m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Most accurate provider: When it comes to deals on Porto-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Porto-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 Porto-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 Porto to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto with our price prediction graph.

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.

Travel insights for flights from Porto to Seattle

Get recent, data-driven insights about flights from Porto to Seattle including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Porto to Seattle?

Currently, January is the cheapest month in which you can book a flight from Porto to Seattle (average of $238). Flying from Porto to Seattle in July is currently the most expensive (average of $411). 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.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

8,759 reviews

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,350 reviews

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Turkish Airlines

7.4

Good

3,914 reviews

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

9,173 reviews

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada

7.0

Good

8,238 reviews

Delta

8.0

Very good

8,759 reviews

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Porto to Seattle round-trip?
Currently priced at $748, KLM will fly you from Porto to Seattle and back. In addition to KLM, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Delta - these airlines can fly you to your destination from $799 and $801, respectively. Users have found that KLM is 21% cheaper than the other options available to this destination.
Can I find deals for flights from Porto to Seattle that include hotel bookings?
Yes. In addition to deals on Porto to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Porto to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto to Seattle.
Can I find deals for business class flights from Porto to Seattle?
Yes. Cheapflights offers flight deals from Porto to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Porto to Seattle?
Currently, January is the cheapest month in which you can book a flight from Porto to Seattle (average of $238). Flying from Porto to Seattle in July is currently the most expensive (average of $411). 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.

See more FAQs

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Other flights to Seattle

Top airline flying from Porto to Seattle

Airline	Cheapest	Average	Flexibility	On-time
KLM	Cheapest$756	Average$820	FlexibilityNo cancel fee	On-time75%

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$545+ Cheap flights from Porto (OPO) 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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Porto to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Porto to Seattle

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Round-trip from

One-way from

Find flight deals from Porto to Seattle

Cheapest flights from Porto to SeattleExplore the most affordable flight options available from Porto to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

Explore the most affordable flight options available from Porto to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

Find flights from Porto to Seattle within your budget

Best time to book a flight from Porto to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto with our price prediction graph.

Travel insights for flights from Porto to Seattle

Get recent, data-driven insights about flights from Porto to Seattle including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Porto to Seattle?

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

Related info for your journey

Find useful and relevant information for your journey from Porto to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Porto to Seattle round-trip?

Can I find deals for flights from Porto to Seattle that include hotel bookings?

How can I find direct flights from Porto to Seattle?

Can I find deals for business class flights from Porto to Seattle?

What is the cheapest month to book a flight from Porto to Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Porto to Seattle

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Top airline flying from Porto to Seattle

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Travel Smart

Cheapest flights from Porto to Seattle
Explore the most affordable flight options available from Porto to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.