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Cheap flights from Porto (OPO) to Seattle (SEA) from $592

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
OPO — SEA
May 4 — May 111
From?
To?
Sat 5/4
Sat 5/11
1 adult, Economy
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Cheap flight deals from Porto to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) 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 29, 2024.

Popular in

July

Cheapest in

February

Average price

$890

Round-trip from

$244
High demand for flights, 32% potential price rise
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Best time to find cheap flights, 23% potential price drop
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Average for round-trip flights in April 2024
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From Porto to Seattle/Tacoma Intl
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What is the cheapest day to fly round-trip from Porto to Seattle?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 24% on your flight compared to booking on days when demand is much higher.

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

February is one of the best times of the year to fly to Seattle from Porto. Prices for February average $946 per person but you can even find prices for as low as $716. The most expensive prices can be found in the month of July. Opting for a February flight can save you 46% on your journey compared to booking in July

When is the cheapest time to fly from Porto to Seattle (OPO - SEA)?

When flying from Porto 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.

Cheap Delta flights from Porto to Seattle

Explore cheap flight options specifically provided by Delta for the route between Porto and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 29, 2024.
Sun 5/265:00 amOPO - SEA
2 stops21h 43mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$762
Sun 5/265:00 amOPO - SEA
1 stop19h 40mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$844
Sat 6/15:00 amOPO - SEA
2 stops22h 10mDelta
Wed 7/311:15 amSEA - OPO
2 stops20h 15mDelta
Deal found 4/28$982

Cheap Porto to Seattle flights in April & May 2024

Find cheap flight options from Porto to Seattle specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Prices were last updated on April 29, 2024.
Sun 5/265:00 amOPO - SEA
2 stops21h 43mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$762
Sun 5/265:00 amOPO - SEA
2 stops19h 30mKLM
Sun 6/29:10 pmSEA - OPO
2 stops17h 05mKLM
Deal found 4/28$780
Sun 5/265:00 amOPO - SEA
1 stop19h 40mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$844
Sun 5/268:15 amOPO - SEA
2 stops33h 02mAmerican Airlines
Sat 6/11:15 amSEA - OPO
2 stops34h 40mAmerican Airlines
Deal found 4/28$888
Sun 5/262:35 pmOPO - SEA
3 stops29h 50mMultiple Airlines
Sun 6/26:50 pmSEA - OPO
2 stops20h 15mMultiple Airlines
Deal found 4/28$967
Sun 5/262:35 pmOPO - SEA
3 stops29h 50mMultiple Airlines
Sun 6/26:50 pmSEA - OPO
3 stops29h 10mMultiple Airlines
Deal found 4/28$997

Porto to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Porto and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 29, 2024.
Sun 5/265:00 amOPO - SEA
2 stops21h 43mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$762
Sun 5/265:00 amOPO - SEA
2 stops19h 30mKLM
Sun 6/29:10 pmSEA - OPO
2 stops17h 05mKLM
Deal found 4/28$780
Sun 5/265:00 amOPO - SEA
1 stop19h 40mDelta
Sun 6/21:35 pmSEA - OPO
1 stop17h 55mDelta
Deal found 4/28$844
Sun 5/268:15 amOPO - SEA
2 stops33h 02mAmerican Airlines
Sat 6/11:15 amSEA - OPO
2 stops34h 40mAmerican Airlines
Deal found 4/28$888
Sun 5/262:35 pmOPO - SEA
3 stops29h 50mMultiple Airlines
Sun 6/26:50 pmSEA - OPO
2 stops20h 15mMultiple Airlines
Deal found 4/28$967
Sat 6/15:00 amOPO - SEA
2 stops22h 10mDelta
Wed 7/311:15 amSEA - OPO
2 stops20h 15mDelta
Deal found 4/28$982
Sun 5/262:35 pmOPO - SEA
3 stops29h 50mMultiple Airlines
Sun 6/26:50 pmSEA - OPO
3 stops29h 10mMultiple Airlines
Deal found 4/28$997
Sat 6/112:35 pmOPO - SEA
1 stop16h 48mUnited Airlines
Wed 7/37:00 amSEA - OPO
2 stops15h 55mUnited Airlines
Deal found 4/28$1,028
Sat 6/18:55 pmOPO - SEA
1 stop21h 25mMultiple Airlines
Wed 7/31:35 pmSEA - OPO
1 stop17h 55mMultiple Airlines
Deal found 4/28$1,051

One-way flights to Seattle from Porto

Search for one-way flight options from Porto to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,948,547 searches. Data last updated April 29, 2024.
Sun 6/210:55 pmOPO - SEA
3 stops29h 40mMultiple Airlines
Deal found 4/28$592
Sun 6/28:40 amOPO - SEA
2 stops22h 10mMultiple Airlines
Deal found 4/28$605
Fri 9/274:50 pmOPO - SEA
1 stop25h 40mTurkish Airlines
Deal found 4/28$619
Thu 6/208:05 amOPO - SEA
2 stops17h 35mMultiple Airlines
Deal found 4/28$632
Fri 9/278:15 amOPO - SEA
2 stops22h 42mAmerican Airlines
Deal found 4/28$674
Thu 6/2010:55 pmOPO - SEA
3 stops26h 45mMultiple Airlines
Deal found 4/28$690
Tue 8/67:30 amOPO - SEA
1 stop23h 52mMultiple Airlines
Deal found 4/28$720
Thu 6/205:00 amOPO - SEA
1 stop19h 35mDelta
Deal found 4/28$723
Mon 8/512:35 pmOPO - SEA
2 stops30h 05mMultiple Airlines
Deal found 4/28$737

Find flights from Porto to Seattle within your budget

Customize your flight search to find flights from Porto 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 2,948,547 searches. Data last updated April 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$762 - $1,244

Route

Depart

Return

Price

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

2 stops21h 43m

Seattle/Tacoma Intl

Sun 6/2

1 stop17h 55m

$762

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

2 stops19h 30m

Seattle/Tacoma Intl

Sun 6/2

2 stops17h 05m

$780

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

1 stop19h 40m

Seattle/Tacoma Intl

Sun 6/2

1 stop17h 55m

$844

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

2 stops33h 02m

Seattle/Tacoma Intl

Sat 6/1

2 stops34h 40m

$888

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

3 stops29h 50m

Seattle/Tacoma Intl

Sun 6/2

2 stops20h 15m

$967

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sun 5/26

3 stops29h 50m

Seattle/Tacoma Intl

Sun 6/2

3 stops29h 10m

$997

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Sat 6/1

1 stop16h 48m

Seattle/Tacoma Intl

Wed 7/3

2 stops15h 55m

$1,028

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Tue 7/23

1 stop31h 55m

Seattle/Tacoma Intl

Fri 8/2

1 stop32h 35m

$1,083

PortoSeattle/Tacoma Intl

OPO - SEA

OPOSEA

Porto

Tue 7/23

2 stops21h 10m

Seattle/Tacoma Intl

Fri 8/2

1 stop20h 40m

$1,244

Flights are sorted by cheapest first

Deals found on 4/28

When is the cheapest time to fly from Porto to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Porto to Seattle. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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.
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Average price of flights to Seattle by month

Plan your trip from Porto to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Porto to Seattle is currently $666 while a round-trip flight costs $955. Price data was last updated on April 21, 2024.

Currently, December is the cheapest month in which you can book a flight from Porto to Seattle (average of $244). Flying from Porto to Seattle in July is currently the most expensive (average of $408). 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.

January

$247

February

$254

March

$288

April

$295

May

$317

June

$407

July

$408

August

$343

September

$278

October

$257

November

$258

December

$244

Temperature and rainfall in Seattle by month

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

SEA

Temperature

41 - 66.2 °F

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 29, 2024.
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Delta
8.1
Very good
10,913 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

KLM
7.9
Good
1,618 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

SWISS
7.8
Good
2,043 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Air France
7.6
Good
1,798 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

Turkish Airlines
7.4
Good
3,699 reviews
Delta
8.1
Very good
10,913 reviews
Check prices

Boarding

8.2

Crew

8.6

Overall

8.1

Comfort

7.9

Entertainment

8.0

Food

7.4

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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.

  • Can I find flights from Porto to Seattle for under $800 on Cheapflights?

    Yes, there are multiple flights from Porto to Seattle for under $800. The cheapest flight booked recently is on Delta for just $762, but on average you can expect to pay $1,070.

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

    Currently priced at $762, Delta will fly you from Porto to Seattle and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and American Airlines - these airlines can fly you to your destination from $780 and $888, respectively. Users have found that Delta is 19% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Porto to Seattle one-way?

    The cheapest airlines for a one-way flight from Porto to Seattle are Turkish Airlines ($619), American Airlines ($674), and Delta ($723).

  • What does OPO to SEA mean?

    Porto Airport is OPO and Seattle/Tacoma Intl Airport is SEA. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Porto to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Porto to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Porto to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Porto to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Porto to Seattle that allow pets onboard?

    Many airlines flying from Porto to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Porto to Seattle?

    Yes, you can often find last-minute deals on Porto to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Porto to Seattle flight deals updated?

    The Porto to Seattle flight deals you see on this page were last updated on 4/29.

See more FAQs

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Alternative routes for Porto to Seattle
See prices for flight routes from nearby airports that may be better suited for you.

Lisbon to Seattle flights

Top airline flying from Porto to Seattle

Discover the top airline that operate flights from Porto 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 2,948,547 searches. Data last updated April 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$700Average$986FlexibilityNo cancel feeOn-time70%
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Search flights from Porto to Seattle by cabin class

Find flights from Porto to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Porto to Seattle?

Deals for Porto to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Porto to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Porto to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Porto to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Porto to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Porto to Seattle become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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