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$357+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:30 pm
LIS
-
SEA
2 stops29h 48m
Multiple Airlines
Wed 3/113:35 pm
SEA
-
LIS
1 stop21h 45m
Multiple Airlines
Deal found 1/27$665
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/39:05 am
LIS
-
SEA
2 stops33h 23m
Multiple Airlines
Wed 3/113:35 pm
SEA
-
LIS
1 stop21h 45m
Multiple Airlines
Deal found 1/27$724
This Mytrip deal was found by Cheapflights users on 1/26. 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 2/236:20 am
LIS
-
SEA
2 stops18h 40m
Multiple Airlines
Mon 3/22:35 pm
SEA
-
LIS
2 stops24h 15m
Multiple Airlines
Deal found 1/26$752
This Iberia deal was found by Cheapflights users on 1/26. 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.
Tue 2/176:30 am
LIS
-
SEA
2 stops22h 54m
Multiple Airlines
Tue 2/246:50 pm
SEA
-
LIS
1 stop18h 55m
Multiple Airlines
Deal found 1/26$756
This British Airways deal was found by Cheapflights users on 1/26. 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.
Tue 2/1711:05 am
LIS
-
SEA
1 stop18h 52m
British Airways
Tue 2/246:50 pm
SEA
-
LIS
1 stop18h 55m
British Airways
Deal found 1/26$757
This American Airlines deal was found by Cheapflights users on 1/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:05 am
LIS
-
SEA
1 stop18h 18m
American Airlines
Wed 4/221:35 pm
SEA
-
LIS
1 stop25h 40m
American Airlines
Deal found 1/27$760
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 2/48:20 am
LIS
-
PDX
2 stops41h 32m
American Airlines
Sun 2/86:00 am
PDX
-
LIS
2 stops31h 45m
American Airlines
Deal found 1/25$762
This Iberia deal was found by Cheapflights users on 1/26. 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.
Fri 2/68:20 am
LIS
-
SEA
2 stops23h 31m
Multiple Airlines
Sun 2/226:50 pm
SEA
-
LIS
1 stop18h 55m
Multiple Airlines
Deal found 1/26$764
This Iberia deal was found by Cheapflights users on 1/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/78:20 am
LIS
-
SEA
2 stops22h 00m
Multiple Airlines
Mon 2/236:50 pm
SEA
-
LIS
1 stop19h 05m
Multiple Airlines
Deal found 1/27$765
This British Airways deal was found by Cheapflights users on 1/26. 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 2/611:05 am
LIS
-
SEA
1 stop19h 02m
British Airways
Sun 2/226:50 pm
SEA
-
LIS
1 stop36h 05m
British Airways
Deal found 1/26$766
This British Airways deal was found by Cheapflights users on 1/26. 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 2/2310:35 am
LIS
-
SEA
2 stops20h 29m
British Airways
Mon 3/26:50 pm
SEA
-
LIS
1 stop19h 05m
British Airways
Deal found 1/26$770
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Sat 2/78:20 am
LIS
-
SEA
2 stops21h 47m
American Airlines
Mon 2/237:15 am
SEA
-
LIS
2 stops17h 50m
American Airlines
Deal found 1/26$773

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$665
(Kiwi.com)

One-way from

$357
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$1,117
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. 11% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 27, 2026.
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

Mon 3/2

9:30 pm-7:18 pm

2 stops29h 48m

Seattle/Tacoma Intl

Wed 3/11

3:35 pm-8:20 pm

1 stop21h 45m

$665

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 2/17

6:30 am-9:24 pm

2 stops22h 54m

Seattle/Tacoma Intl

Tue 2/24

6:50 pm-9:45 pm

1 stop18h 55m

$756

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 4/8

12:30 pm-12:44 am

2 stops20h 14m

Seattle/Tacoma Intl

Wed 4/22

1:35 pm-5:55 pm

1 stop20h 20m

$756

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 2/17

11:05 am-9:57 pm

1 stop18h 52m

Seattle/Tacoma Intl

Tue 2/24

6:50 pm-9:45 pm

1 stop18h 55m

$757

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 4/8

11:05 am-9:23 pm

1 stop18h 18m

Seattle/Tacoma Intl

Wed 4/22

8:20 pm-11:15 pm

1 stop18h 55m

$757

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 2/23

3:50 pm-11:30 am

1 stop27h 40m

Seattle/Tacoma Intl

Mon 3/2

6:50 pm-9:55 pm

1 stop19h 05m

$765

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 2/6

11:05 am-10:07 pm

1 stop19h 02m

Seattle/Tacoma Intl

Sun 2/22

6:50 pm-2:55 pm

1 stop36h 05m

$766

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 2/7

8:20 am-10:20 pm

2 stops22h 00m

Seattle/Tacoma Intl

Mon 2/23

10:57 pm-9:05 am

1 stop26h 08m

$775

PortoSeattle

OPO - SEA

OPOSEA

Porto

Mon 2/9

8:20 am-11:51 pm

2 stops23h 31m

Seattle/Tacoma Intl

Tue 2/17

5:37 am-7:40 am

2 stops18h 03m

$779

PortoSeattle

OPO - SEA

OPOSEA

Porto

Wed 4/15

12:25 pm-12:44 am

2 stops20h 19m

Seattle/Tacoma Intl

Sun 4/19

11:26 pm-4:00 pm

2 stops32h 34m

$779

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 43 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.

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 January 27, 2026.
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
8,123 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Overall

7.9

Boarding

8.1

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
8,123 reviews
Delta
7.9
Good
8,123 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Overall

7.9

Boarding

8.1

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
1,528 reviews
Delta
7.9
Good
8,123 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Overall

7.9

Boarding

8.1

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
9,209 reviews
Delta
7.9
Good
8,123 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Overall

7.9

Boarding

8.1

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
7,704 reviews
Delta
7.9
Good
8,123 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Food

7.2

Overall

7.9

Boarding

8.1

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, British Airways, and Iberia fly from Portugal to State of Washington in about 16h 50m. The time it takes to get you to your destination can typically vary by up to 20h 39m. The distance between Portugal and State of Washington is about 5295 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 $562. However, be on the lookout for offers from British Airways and American 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 January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$1,128FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$1,236FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,159FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$1,040FlexibilityNo cancel feeOn-timeN/A

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