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Lisbon

$274+ Cheap flights from Washington to Lisbon (LIS)

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Washington to Lisbon

Cheapest flights from Washington to Lisbon
Explore the most affordable flight options available from Washington to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/292:45 pmPDX - LIS
1 stop21h 35mIcelandair
Sun 12/149:20 pmLIS - PDX
1 stop27h 40mIcelandair
Deal found 10/30$368
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 12/311:19 amGEG - LIS
2 stops19h 51mDelta
Sun 12/711:25 amLIS - GEG
2 stops41h 31mDelta
Deal found 10/29$500
This Orbitz deal was found by Cheapflights users on 10/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:10 amSEA - LIS
1 stop16h 45mMultiple Airlines
Mon 12/12:10 pmLIS - SEA
2 stops37h 06mMultiple Airlines
Deal found 10/28$505
This Finnair deal was found by Cheapflights users on 10/28. 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.
Fri 10/3112:03 pmSEA - LIS
1 stop13h 42mMultiple Airlines
Fri 11/711:05 amLIS - SEA
1 stop19h 15mMultiple Airlines
Deal found 10/28$506
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/302:00 pmSEA - LIS
1 stop16h 30mUnited Airlines
Tue 2/1711:20 amLIS - SEA
2 stops39h 43mUnited Airlines
Deal found 10/28$507
This Air Canada deal was found by Cheapflights users on 10/28. 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 12/18:00 pmSEA - LIS
2 stops29h 20mAir Canada
Mon 12/85:00 amLIS - SEA
2 stops25h 16mAir Canada
Deal found 10/28$508
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:00 pmSEA - LIS
1 stop16h 30mLufthansa
Tue 2/172:10 pmLIS - SEA
1 stop31h 10mLufthansa
Deal found 10/28$509
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Tue 10/289:09 amSEA - LIS
2 stops16h 56mAmerican Airlines
Sat 11/810:45 amLIS - SEA
1 stop19h 35mAmerican Airlines
Deal found 10/28$510
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 12/317:00 amSEA - LIS
2 stops17h 10mUnited Airlines
Mon 2/165:00 amLIS - SEA
1 stop15h 10mUnited Airlines
Deal found 10/28$511
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/3011:59 pmSEA - LIS
2 stops24h 56mUnited Airlines
Mon 2/165:00 amLIS - SEA
1 stop15h 10mUnited Airlines
Deal found 10/28$513
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Tue 11/252:00 pmSEA - LIS
1 stop16h 30mLufthansa
Tue 12/22:10 pmLIS - SEA
1 stop31h 10mLufthansa
Deal found 10/28$515
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Tue 11/182:00 pmSEA - LIS
1 stop16h 30mLufthansa
Thu 11/272:10 pmLIS - SEA
1 stop31h 10mLufthansa
Deal found 10/28$516

Cheap flight deals from Washington to Lisbon

Keep the following information in mind while searching for Washington to Lisbon flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$368
(Mytrip)

One-way from

$274
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$818
Provider with most accurate pricing for Seattle/Tacoma Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lisbon Humberto Delgado flights.
Search Deals
From Washington to Lisbon Humberto Delgado
Search Deals
One-way flight from Washington to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Lisbon 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 October 30, 2025.
Use the filters below to find and compare flights from Washington to Lisbon that are best for you.

Fly from

Washington

Fly to

Lisbon

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/18

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 2/25

5:00 am-11:25 am

1 stop14h 25m

$486

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 2/5

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Fri 2/20

5:00 am-11:25 am

1 stop14h 25m

$486

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/4

7:00 am-3:10 pm

2 stops24h 10m

Lisbon Humberto Delgado

Wed 2/25

5:00 am-11:25 am

1 stop14h 25m

$490

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 1/14

11:22 am-3:10 pm

2 stops19h 48m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-7:59 pm

2 stops22h 59m

$500

PascoLisbon

PSC - LIS

PSCLIS

Pasco Tri Cities

Wed 1/14

5:05 am-3:10 pm

2 stops26h 05m

Lisbon Humberto Delgado

Sun 1/18

11:25 am-4:53 pm

2 stops37h 28m

$500

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/14

7:00 am-11:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Mon 2/2

5:00 am-4:30 pm

2 stops19h 30m

$500

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 1/24

7:00 am-3:10 pm

2 stops24h 10m

Lisbon Humberto Delgado

Sun 2/1

5:00 am-6:50 pm

2 stops21h 50m

$500

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 12/3

11:19 am-3:10 pm

2 stops19h 51m

Lisbon Humberto Delgado

Sun 12/7

11:25 am-8:56 pm

2 stops41h 31m

$500

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/14

1:25 pm-2:35 pm

1 stop17h 10m

Lisbon Humberto Delgado

Mon 2/2

5:00 am-5:35 pm

2 stops20h 35m

$502

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/12

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 1/28

10:00 am-8:27 pm

1 stop18h 27m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 45 results
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Best time to book a flight from Washington to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Lisbon (average of $351). Flying from State of Washington to Lisbon in June is currently the most expensive (average of $975). 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 LIS?

Find hourly flight availability from Washington to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Lisbon in the afternoon. If you’re flexible enough to do this you can expect to save up to 65% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from State of Washington to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Washington to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Lisbon flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

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

  • What airport do you fly into for flights to Lisbon from Washington?

    Lisbon Humberto Delgado (LIS), located 4.2 mi from the city center, is the airport you fly into when you book flights from Washington to Lisbon.

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

    For as low as $507, KLM can have you in Lisbon from State of Washington in 16h 30m. The distance between State of Washington and Lisbon is about 5199 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from State of Washington to Lisbon are Scandinavian Airlines ($308), Air Canada ($323), and United Airlines ($328).

  • What are the most popular routes from State of Washington to Lisbon?

    When deciding which route to take from State of Washington to Lisbon consider Seattle/Tacoma Intl - Lisbon Humberto Delgado, Portland - Lisbon Humberto Delgado or Spokane - Lisbon Humberto Delgado as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Lisbon 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 Lisbon?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Lisbon (average of $351). Flying from State of Washington to Lisbon in June is currently the most expensive (average of $975). 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

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Oeiras
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Beja
Sesimbra
Colares

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Alternative routes for Washington to Lisbon

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 Lisbon

Discover the top 10 airlines that operate flights from Washington to Lisbon. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$357Average$603FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$517Average$805FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$543Average$1,024FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$544Average$1,006FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$551Average$837FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$560Average$965FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$627Average$1,040FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$627Average$920FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$632Average$881FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$646Average$735FlexibilityNo cancel feeOn-time77%

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