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Portugal

$284+ Cheap flights from Washington to Portugal

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Washington to Portugal

Keep the following information in mind while searching for Washington to Portugal flight deals. Data was last updated July 31, 2025.

Round-trip from

$607
(FlightHub)

One-way from

$284
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,036
From Washington to Portugal
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One-way flight from Washington to Portugal
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Highest demand for flights based on searches. 16% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Washington to Portugal

Cheapest flights from Washington to Portugal
Explore the most affordable flight options available from Washington to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Mytrip deal was found by Cheapflights users on 7/31. 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 10/136:15 amPDX - LIS
3 stops28h 25mMultiple Airlines
Mon 10/2010:45 pmLIS - PDX
3 stops28h 01mMultiple Airlines
Deal found 7/31$457
This Air Canada deal was found by Cheapflights users on 7/30. 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.
Mon 11/247:00 pmPDX - LIS
2 stops30h 20mAir Canada
Thu 12/410:55 amLIS - PDX
2 stops39h 50mAir Canada
Deal found 7/30$575
This United Airlines deal was found by Cheapflights users on 7/30. 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 11/255:00 amPDX - LIS
2 stops20h 20mUnited Airlines
Tue 12/211:20 amLIS - PDX
2 stops42h 55mUnited Airlines
Deal found 7/30$580
This Lufthansa deal was found by Cheapflights users on 7/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:50 amPDX - LIS
2 stops39h 30mLufthansa
Fri 12/55:00 amLIS - PDX
2 stops27h 44mLufthansa
Deal found 7/30$592
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 11/247:00 amPDX - LIS
1 stop18h 00mDelta
Fri 12/510:00 amLIS - PDX
1 stop21h 29mDelta
Deal found 7/30$601
This Mytrip deal was found by Cheapflights users on 7/31. 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 8/47:35 pmSEA - FAO
1 stop15h 25mAer Lingus
Wed 8/2711:40 amFAO - SEA
1 stop14h 10mAer Lingus
Deal found 7/31$606
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/911:30 pmSEA - LIS
1 stop13h 50mIcelandair
Sun 8/3110:25 pmLIS - SEA
1 stop21h 00mIcelandair
Deal found 7/30$606
This FlightHub deal was found by Cheapflights users on 7/30. 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.
Mon 9/227:35 pmSEA - LIS
1 stop18h 00mAer Lingus
Wed 10/110:15 pmLIS - SEA
1 stop27h 35mAer Lingus
Deal found 7/30$607
This Air Canada deal was found by Cheapflights users on 7/31. 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.
Fri 10/175:30 amSEA - LIS
2 stops21h 35mAir Canada
Sun 11/95:00 amLIS - SEA
2 stops25h 06mAir Canada
Deal found 7/31$610
This CheapOair deal was found by Cheapflights users on 7/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:10 pmSEA - LIS
1 stop24h 20mMultiple Airlines
Sat 11/155:00 amLIS - SEA
2 stops22h 16mMultiple Airlines
Deal found 7/30$611
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:45 pmPDX - LIS
1 stop17h 10mBritish Airways
Tue 12/27:40 pmLIS - PDX
1 stop28h 15mBritish Airways
Deal found 7/30$613
This FlightHub deal was found by Cheapflights users on 7/31. 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.
Fri 10/313:00 pmSEA - LIS
1 stop24h 50mLufthansa
Sat 11/85:00 amLIS - SEA
1 stop15h 10mLufthansa
Deal found 7/31$613

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Portugal 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 July 31, 2025.
Use the filters below to find and compare flights from Washington to Portugal that are best for you.

Fly from

Washington

Fly to

Portugal

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 10/13

6:15 am-6:40 pm

3 stops28h 25m

Lisbon Humberto Delgado

Mon 10/20

10:45 pm-6:46 pm

3 stops28h 01m

$457

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

7:00 pm-9:20 am

2 stops30h 20m

Lisbon Humberto Delgado

Tue 12/2

11:20 am-10:15 pm

2 stops42h 55m

$575

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 11/25

5:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Tue 12/2

11:20 am-10:15 pm

2 stops42h 55m

$580

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

9:50 am-9:20 am

2 stops39h 30m

Lisbon Humberto Delgado

Fri 12/5

5:00 am-12:44 am

2 stops27h 44m

$592

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

7:00 am-9:00 am

1 stop18h 00m

Lisbon Humberto Delgado

Fri 12/5

10:00 am-11:29 pm

1 stop21h 29m

$601

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/22

7:35 pm-9:35 pm

1 stop18h 00m

Lisbon Humberto Delgado

Wed 10/1

10:15 pm-5:50 pm

1 stop27h 35m

$607

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/17

5:30 am-11:05 am

2 stops21h 35m

Lisbon Humberto Delgado

Sun 11/9

5:00 am-10:06 pm

2 stops25h 06m

$610

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Tue 10/7

7:35 pm-7:00 pm

1 stop15h 25m

Faro

Wed 10/15

11:40 am-5:50 pm

1 stop14h 10m

$611

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/2

3:10 pm-11:30 pm

1 stop24h 20m

Lisbon Humberto Delgado

Sat 11/15

5:00 am-7:16 pm

2 stops22h 16m

$611

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

5:45 pm-6:55 pm

1 stop17h 10m

Lisbon Humberto Delgado

Tue 12/2

7:40 pm-3:55 pm

1 stop28h 15m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Portugal (average of $612). Flying from State of Washington to Portugal in June is currently the most expensive (average of $1,129). 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 WA to PT?

Find hourly flight availability from Washington to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

When flying from State of Washington to Portugal, 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 Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated July 31, 2025.
Read reviews from past customers who have flown Delta, KLM, and Air France from Washington to Portugal. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington to Portugal. 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 to fly from State of Washington to Portugal one-way?

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $346. Users have also found prices from $397 and $462 on Scandinavian Airlines and Lufthansa, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Portugal (average of $612). Flying from State of Washington to Portugal in June is currently the most expensive (average of $1,129). 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 Washington to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Portugal

Discover the top 10 airlines that operate flights from Washington to Portugal. 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$466Average$644FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$571Average$1,026FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$581Average$1,052FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$621Average$1,064FlexibilityNo cancel feeOn-time71%
DeltaCheapest$636Average$1,059FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$646Average$804FlexibilityNo cancel feeOn-time77%
KLMCheapest$648Average$1,014FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$649Average$1,075FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$652Average$828FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$660Average$969FlexibilityNo cancel feeOn-timeN/A

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