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$341+ Cheap flights from Portugal to Washington

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Portugal to Washington

Cheapest flights from Portugal to Washington
Explore the most affordable flight options available from Portugal to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 16, 2025.

This British Airways deal was found by Cheapflights users on 12/15. 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.
Fri 12/1911:05 amLIS - SEA
1 stop18h 59mBritish Airways
Thu 1/16:50 pmSEA - LIS
1 stop19h 05mBritish Airways
Deal found 12/15$946
This British Airways deal was found by Cheapflights users on 12/15. 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.
Thu 12/188:55 amLIS - SEA
1 stop21h 04mBritish Airways
Tue 12/3011:20 amSEA - LIS
2 stops19h 25mBritish Airways
Deal found 12/15$947
This Finnair deal was found by Cheapflights users on 12/15. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:55 amLIS - SEA
1 stop21h 04mMultiple Airlines
Tue 12/3011:07 pmSEA - LIS
1 stop23h 48mMultiple Airlines
Deal found 12/15$982
This Iberia deal was found by Cheapflights users on 12/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:45 pmLIS - SEA
2 stops29h 06mMultiple Airlines
Thu 1/16:50 pmSEA - LIS
1 stop19h 05mMultiple Airlines
Deal found 12/15$1,003
This British Airways deal was found by Cheapflights users on 12/15. 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 12/1511:05 amLIS - SEA
1 stop18h 45mBritish Airways
Thu 1/16:50 pmSEA - LIS
1 stop15h 10mBritish Airways
Deal found 12/15$1,004
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:30 amLIS - SEA
2 stops35h 32mAmerican Airlines
Tue 12/306:30 amSEA - LIS
2 stops18h 35mAmerican Airlines
Deal found 12/15$1,010
This Iberia deal was found by Cheapflights users on 12/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:45 pmLIS - SEA
2 stops30h 10mIberia
Thu 1/15:23 amSEA - LIS
2 stops22h 27mIberia
Deal found 12/15$1,028
This FlightHub deal was found by Cheapflights users on 12/13. 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 12/164:10 pmOPO - SEA
1 stop32h 55mTurkish Airlines
Thu 12/257:00 pmSEA - OPO
1 stop36h 10mTurkish Airlines
Deal found 12/13$1,042
This Air Canada deal was found by Cheapflights users on 12/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:55 amLIS - SEA
2 stops30h 36mAir Canada
Tue 12/305:50 amSEA - LIS
2 stops19h 30mAir Canada
Deal found 12/14$1,100
This Delta deal was found by Cheapflights users on 12/13. 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 12/166:05 amOPO - SEA
2 stops24h 20mDelta
Thu 12/253:05 pmSEA - OPO
1 stop23h 20mDelta
Deal found 12/13$1,124
This United Airlines deal was found by Cheapflights users on 12/13. 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 12/1612:30 pmOPO - SEA
3 stops61h 36mUnited Airlines
Thu 12/2511:15 pmSEA - OPO
2 stops28h 25mUnited Airlines
Deal found 12/13$1,270
This Virgin Atlantic deal was found by Cheapflights users on 12/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:00 amLIS - SEA
2 stops20h 54mVirgin Atlantic
Thu 1/16:15 amSEA - LIS
2 stops17h 45mVirgin Atlantic
Deal found 12/15$1,303

Find flight deals from Portugal to Washington

Keep the following information in mind while searching for Portugal to Washington flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$711
(Mytrip)

One-way from

$341
(Kiwi.com)

Popular in

July

Cheapest in

April

Average price

$959
Provider with most accurate pricing for Lisbon Humberto Delgado-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Seattle/Tacoma Intl flights.
Search Deals
From Portugal to Washington
Search Deals
One-way flight from Portugal to Washington
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Washington 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 December 16, 2025.
Use the filters below to find and compare flights from Portugal to Washington that are best for you.

Fly from

Portugal

Fly to

Washington

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/14

3:30 pm-5:00 pm

3 stops33h 30m

Seattle/Tacoma Intl

Wed 1/28

2:35 pm-5:35 pm

2 stops19h 00m

$711

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/21

4:55 pm-11:22 pm

2 stops38h 27m

Seattle/Tacoma Intl

Sat 1/24

2:02 pm-4:05 pm

2 stops42h 03m

$848

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 1/15

6:10 am-9:15 am

3 stops35h 05m

Portland

Wed 1/28

7:00 pm-9:20 am

3 stops30h 20m

$855

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/14

5:30 pm-7:17 pm

1 stop33h 47m

Seattle/Tacoma Intl

Thu 1/29

10:51 am-7:55 pm

2 stops25h 04m

$859

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 1/15

6:55 pm-10:13 pm

2 stops35h 18m

Seattle/Tacoma Intl

Wed 1/28

7:10 am-9:35 pm

2 stops30h 25m

$878

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Wed 1/28

4:55 pm-10:20 pm

2 stops37h 25m

Portland

Wed 2/4

10:30 am-9:35 pm

2 stops27h 05m

$889

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/18

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Tue 1/27

1:40 pm-10:30 am

1 stop12h 50m

$890

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/18

6:00 am-10:16 pm

2 stops24h 16m

Seattle/Tacoma Intl

Tue 1/27

8:10 am-11:40 am

2 stops19h 30m

$890

PortoSeattle

OPO - SEA

OPOSEA

Porto

Tue 1/27

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Tue 2/3

1:40 pm-10:30 am

1 stop12h 50m

$890

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/11

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Sun 1/18

9:25 am-10:30 am

2 stops17h 05m

$890

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 50 results
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Best time to book a flight from Portugal to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Portugal 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.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington

What is the cheapest month to book a flight from Portugal to State of Washington?

Currently, April is the cheapest month in which you can book a flight from Portugal to State of Washington (average of $693). Flying from Portugal to State of Washington in July is currently the most expensive (average of $970). 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.

What is the cheapest time of day to fly from PT to WA?

Find hourly flight availability from Portugal to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 16, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 31% on flights from Portugal to State of Washington by exploring options for tickets in the afternoon.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated December 16, 2025.
Get a feel of what it's like to fly with Delta, Air France, and United Airlines from Portugal to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,009 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,506 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,094 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,580 reviews
Delta
7.9
Good
8,009 reviews

Comfort

7.9

Overall

7.9

Entertainment

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

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

  • How long is the flight from Portugal to State of Washington?

    Airlines like Scandinavian Airlines, Air Canada, and Delta fly from Portugal to State of Washington in about 14h 50m. The time it takes to get you to your destination can typically vary by up to 23h 37m. The distance between Portugal and State of Washington is about 5083 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Portugal to State of Washington one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as $556. However, be on the lookout for offers from British Airways and Turkish Airlines, as they are both options that can get you from Portugal to State of Washington for a low price.

  • Can I find deals for flights from Portugal to Washington that include hotel bookings?

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

  • How can I find direct flights from Portugal to Washington?

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

  • Can I find deals for business class flights from Portugal to Washington?

    Yes. Cheapflights offers flight deals from Portugal to Washington 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 Portugal to State of Washington?

    Currently, April is the cheapest month in which you can book a flight from Portugal to State of Washington (average of $693). Flying from Portugal to State of Washington in July is currently the most expensive (average of $970). 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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Alternative routes for Portugal to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Portugal to Washington

Discover the top 4 airlines that operate flights from Portugal to Washington. 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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$902FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$1,236FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,159FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$1,077FlexibilityNo cancel feeOn-timeN/A

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