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$371+ 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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Portugal to Washington

Keep the following information in mind while searching for Portugal to Washington flight deals. Data was last updated September 15, 2025.

Round-trip from

$714
(Kiwi.com)

One-way from

$371
(Kiwi.com)

Popular in

July

Cheapest in

December

Average price

$912
From Portugal to Washington
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One-way flight from Portugal to Washington
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Highest demand for flights based on searches. 14% potential increase in price ($164 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:05 amLIS - SEA
2 stops33h 30mMultiple Airlines
Fri 11/287:05 amSEA - LIS
1 stop14h 20mMultiple Airlines
Deal found 9/14$714
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/185:00 amLIS - SEA
2 stops22h 05mMultiple Airlines
Tue 11/257:57 amSEA - LIS
2 stops17h 23mMultiple Airlines
Deal found 9/14$715
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:35 amLIS - SEA
1 stop18h 30mMultiple Airlines
Tue 11/257:57 amSEA - LIS
1 stop14h 48mMultiple Airlines
Deal found 9/15$716
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:55 amLIS - SEA
1 stop16h 25mMultiple Airlines
Sun 11/238:05 pmSEA - LIS
1 stop16h 55mMultiple Airlines
Deal found 9/14$723
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:35 amLIS - SEA
1 stop18h 30mMultiple Airlines
Sat 11/297:57 amSEA - LIS
1 stop14h 48mMultiple Airlines
Deal found 9/15$730
This KLM deal was found by Cheapflights users on 9/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:25 amLIS - PDX
1 stop32h 40mMultiple Airlines
Wed 10/2211:10 amPDX - LIS
2 stops16h 05mMultiple Airlines
Deal found 9/14$749
This KLM deal was found by Cheapflights users on 9/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:25 amLIS - PDX
1 stop32h 40mKLM
Wed 10/221:15 pmPDX - LIS
1 stop17h 20mKLM
Deal found 9/14$751
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:00 amLIS - PDX
2 stops20h 10mDelta
Thu 10/167:30 amPDX - LIS
2 stops23h 20mDelta
Deal found 9/15$752
This Iberia deal was found by Cheapflights users on 9/13. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:30 amLIS - SEA
2 stops24h 35mMultiple Airlines
Sat 11/226:50 pmSEA - LIS
1 stop19h 40mMultiple Airlines
Deal found 9/13$753
This American Airlines deal was found by Cheapflights users on 9/12. 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 12/410:55 amLIS - PDX
2 stops20h 01mAmerican Airlines
Mon 12/82:18 pmPDX - LIS
2 stops23h 37mAmerican Airlines
Deal found 9/12$754
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2211:05 amLIS - SEA
1 stop32h 55mAmerican Airlines
Sun 10/53:00 pmSEA - LIS
2 stops24h 05mAmerican Airlines
Deal found 9/14$754
This British Airways deal was found by Cheapflights users on 9/15. 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 11/1711:05 amLIS - SEA
1 stop19h 04mBritish Airways
Mon 11/2411:42 amSEA - LIS
2 stops26h 13mBritish Airways
Deal found 9/15$755

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 September 15, 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

Tue 11/18

5:00 am-7:05 pm

2 stops22h 05m

Seattle/Tacoma Intl

Tue 11/25

7:57 am-9:20 am

2 stops17h 23m

$715

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 10/30

11:25 am-12:25 pm

1 stop32h 00m

Portland

Thu 11/6

11:10 am-11:20 am

2 stops16h 10m

$749

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 10/9

10:25 am-11:05 am

1 stop32h 40m

Portland

Wed 10/22

11:10 am-11:15 am

2 stops16h 05m

$749

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 10/9

10:25 am-11:05 am

1 stop32h 40m

Portland

Wed 10/22

1:15 pm-10:50 pm

1 stop25h 35m

$751

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 10/2

5:00 am-6:03 pm

2 stops21h 03m

Portland

Thu 10/16

11:10 am-2:50 pm

2 stops19h 40m

$751

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Thu 12/4

10:55 am-10:56 pm

2 stops20h 01m

Portland

Mon 12/8

2:18 pm-9:55 pm

2 stops23h 37m

$754

LisbonPortland

LIS - PDX

LISPDX

Lisbon Humberto Delgado

Sun 11/30

11:25 am-11:25 am

1 stop32h 00m

Portland

Thu 12/11

10:05 am-11:20 am

2 stops17h 15m

$754

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 11/17

11:05 am-10:09 pm

1 stop19h 04m

Seattle/Tacoma Intl

Sun 11/23

11:42 am-9:45 pm

2 stops26h 03m

$755

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 3/3

11:10 am-9:56 pm

1 stop18h 46m

Seattle/Tacoma Intl

Tue 3/10

7:50 pm-5:40 pm

1 stop14h 50m

$755

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 11/18

11:05 am-10:09 pm

1 stop19h 04m

Seattle/Tacoma Intl

Sun 11/23

11:42 am-9:45 pm

2 stops26h 03m

$755

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 48 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, January is the cheapest month in which you can book a flight from Portugal to State of Washington (average of $238). Flying from Portugal to State of Washington in June is currently the most expensive (average of $388). 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 September 15, 2025.

When flying from Portugal to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 2025.
Get a feel of what it's like to fly with Delta, KLM, and Air France 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
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,956 reviews
Delta
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Air France
7.4
Good
1,468 reviews
Delta
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,931 reviews
Delta
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,956 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 KLM, Delta, and British Airways fly from Portugal to State of Washington in about 19h 04m. The time it takes to get you to your destination can typically vary by up to 13h 36m. The distance between Portugal and State of Washington is about 5199 mi. This flight may include one or multiple stops.

  • 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, January is the cheapest month in which you can book a flight from Portugal to State of Washington (average of $238). Flying from Portugal to State of Washington in June is currently the most expensive (average of $388). 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 5 airlines flying from Portugal to Washington

Discover the top 5 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$1,016FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$738Average$1,214FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$762Average$1,151FlexibilityNo cancel feeOn-time77%
DeltaCheapest$775Average$1,019FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$794Average$870FlexibilityNo cancel feeOn-time75%

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