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

If you’re flying from a popular airport in Portugal, such as Porto or Lisbon, and flying into State of Washington, then you can expect flight times to average 14h 37m and 15h, respectively.

What is the cheapest airline that flies from Portugal to Washington?

Iberia, British Airways, and Finnair are the most popular carriers operating from Portugal to Washington

When did momondo last update prices for flights from Portugal to Washington?

Prices for flights from Portugal to Washington were last updated today.

How many operators does momondo search for flights from Portugal to Washington?

The number of operators available for flights from Portugal to Washington is 2 as of August 2026.

How old do you have to be to fly from Portugal to Washington?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$429 Cheap Flights from Portugal to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portugal to Washington

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Recent round-trip flight deals from Portugal to Washington

Enter your travel dates to find the best prices.

3:00 pm - 8:40 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

13h 40m1 stop Reykjavik Keflavik Intl

7:00 pm - 1:50 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

34h 50m1 stop Reykjavik Keflavik Intl

$867Icelandair

Tue, Sep 22 - Fri, Oct 2

10:55 pm - 1:45 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

22h 50m1 stop Kastrup Copenhagen

3:55 pm - 10:05 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

22h 10m1 stop Kastrup Copenhagen

$891Scandinavian Airlines

Sat, Sep 5 - Fri, Sep 18

6:40 am - 8:40 pmOPO Porto-SEA Seattle/Tacoma Intl

22h 00m2 stops London Gatwick Reykjavik Keflavik Intl

7:00 pm - 11:20 pmSEA Seattle/Tacoma Intl-OPO Porto

20h 20m2 stops Reykjavik Keflavik Intl London Gatwick

$904Multiple Airlines

Thu, Sep 10 - Mon, Sep 14

5:45 pm - 8:40 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

34h 55m3 stops Barcelona-El Prat London Gatwick Reykjavik Keflavik Intl

3:40 pm - 11:30 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

23h 50m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Manchester

$906Multiple Airlines

Wed, Sep 30 - Sat, Oct 17

5:00 am - 4:35 pmOPO Porto-SEA Seattle/Tacoma Intl

19h 35m1 stop Amsterdam Schiphol

12:00 pm - 3:30 pmSEA Seattle/Tacoma Intl-OPO Porto

19h 30m2 stops Minneapolis St Paul Paris Charles de Gaulle

$963Delta

Tue, Sep 8 - Sun, Sep 13

5:00 am - 4:35 pmOPO Porto-SEA Seattle/Tacoma Intl

19h 35m1 stop Amsterdam Schiphol

6:45 pm - 10:30 pmSEA Seattle/Tacoma Intl-OPO Porto

19h 45m1 stop Paris Charles de Gaulle

$963Delta

Thu, Sep 10 - Mon, Sep 14

5:00 am - 11:47 amOPO Porto-SEA Seattle/Tacoma Intl

14h 47m1 stop Amsterdam Schiphol

1:30 pm - 3:30 pmSEA Seattle/Tacoma Intl-OPO Porto

18h 00m1 stop Paris Charles de Gaulle

$963Delta

Tue, Sep 8 - Sun, Sep 13

5:00 am - 11:47 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

14h 47m1 stop Amsterdam Schiphol

7:15 am - 11:15 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

20h 00m2 stops Chicago O'Hare Intl Paris Charles de Gaulle

$969Delta

Wed, Sep 23 - Fri, Oct 2

7:25 am - 9:10 pmLIS Lisbon Humberto Delgado-PDX Portland

21h 45m2 stops Frankfurt am Main Denver Intl

8:30 am - 10:05 amPDX Portland-LIS Lisbon Humberto Delgado

17h 35m1 stop Washington, D.C. Dulles Intl

$1,023United Airlines

Fri, Oct 23 - Sun, Nov 1

12:20 pm - 8:10 pmLIS Lisbon Humberto Delgado-PDX Portland

15h 50m1 stop Washington, D.C. Dulles Intl

11:09 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

25h 11m1 stop Newark

$1,031United Airlines

Fri, Sep 11 - Sat, Sep 19

Recent last minute flight deals from Portugal to Washington

Enter your travel dates to find the best prices.

12:20 pm - 8:10 pmLIS Lisbon Humberto Delgado-PDX Portland

15h 50m1 stop Washington, D.C. Dulles Intl

10:59 pm - 10:30 amPDX Portland-LIS Lisbon Humberto Delgado

27h 31m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National

$1,215United Airlines

Fri, Aug 14 - Mon, Jun 21

12:20 pm - 9:32 amLIS Lisbon Humberto Delgado-PDX Portland

29h 12m2 stops Washington, D.C. Dulles Intl Denver Intl

10:56 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

25h 24m1 stop Newark

$1,215United Airlines

Fri, Aug 14 - Tue, Jun 22

12:20 pm - 8:10 pmLIS Lisbon Humberto Delgado-PDX Portland

15h 50m1 stop Washington, D.C. Dulles Intl

10:56 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

25h 24m1 stop Newark

$1,215United Airlines

Fri, Aug 14 - Tue, Jun 22

10:25 am - 9:29 amLIS Lisbon Humberto Delgado-PDX Portland

31h 04m2 stops Newark Chicago O'Hare Intl

10:59 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

25h 21m2 stops Chicago O'Hare Intl Newark

$1,215United Airlines

Fri, Aug 14 - Mon, Jun 21

5:00 am - 11:10 amLIS Lisbon Humberto Delgado-PDX Portland

14h 10m1 stop Amsterdam Schiphol

1:00 pm - 5:50 pmPDX Portland-LIS Lisbon Humberto Delgado

20h 50m2 stops Los Angeles Los Angeles Paris Charles de Gaulle

$1,247Delta

Fri, Aug 14 - Wed, Jun 23

5:00 am - 4:03 pmLIS Lisbon Humberto Delgado-PDX Portland

19h 03m2 stops Amsterdam Schiphol Salt Lake City

1:00 pm - 5:50 pmPDX Portland-LIS Lisbon Humberto Delgado

20h 50m2 stops Los Angeles Los Angeles Paris Charles de Gaulle

$1,252Delta

Fri, Aug 14 - Wed, Jun 23

11:05 am - 11:50 amLIS Lisbon Humberto Delgado-PDX Portland

32h 45m1 stop Philadelphia

7:30 pm - 11:05 pmPDX Portland-LIS Lisbon Humberto Delgado

19h 35m1 stop London Heathrow

$1,286British Airways

Fri, Aug 14 - Thu, Jun 24

11:05 am - 10:56 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

19h 51m1 stop Philadelphia

1:30 pm - 11:10 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

25h 40m1 stop London Heathrow

$1,303American Airlines

Wed, Aug 12 - Sat, Sep 12

11:05 am - 10:26 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

19h 21m2 stops Philadelphia Dallas/Fort Worth

8:20 pm - 11:10 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

18h 50m1 stop London Heathrow

$1,308American Airlines

Wed, Aug 12 - Sat, Sep 12

11:05 am - 10:26 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

19h 21m2 stops Philadelphia Dallas/Fort Worth

6:18 am - 9:05 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

18h 47m2 stops Chicago O'Hare Intl Philadelphia

$1,323American Airlines

Wed, Aug 12 - Sat, Sep 12

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SWISS flights from Portugal to State of Washington

Our best SWISS deals on Portugal to State of Washington flight tickets

SWISS

Aug 24

LIS6:10 pmLisbon Humberto Delgado

34h 33m

2 stops

SEA8:43 pmSeattle/Tacoma Intl

Sep 6

SEA7:00 amSeattle/Tacoma Intl

32h 25m

2 stops

LIS11:25 pmLisbon Humberto Delgado

$1,161

SWISS

Aug 24

OPO7:20 pmPorto

31h 47m

2 stops

SEA7:07 pmSeattle/Tacoma Intl

Aug 30

SEA7:00 amSeattle/Tacoma Intl

21h 00m

2 stops

OPO12:00 pmPorto

$1,216

Delta flights from Portugal to State of Washington

Our best Delta deals on Portugal to State of Washington flight tickets

Delta

Sep 8

OPO5:00 amPorto

14h 47m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Sep 13

SEA1:30 pmSeattle/Tacoma Intl

18h 00m

1 stop

OPO3:30 pmPorto

$963

Delta

Sep 8

OPO5:00 amPorto

22h 05m

2 stops

SEA7:05 pmSeattle/Tacoma Intl

Sep 13

SEA12:00 pmSeattle/Tacoma Intl

19h 30m

2 stops

OPO3:30 pmPorto

$969

Delta

Sep 22

LIS5:00 amLisbon Humberto Delgado

14h 47m

1 stop

SEA11:47 amSeattle/Tacoma Intl

Oct 2

SEA6:40 pmSeattle/Tacoma Intl

15h 10m

1 stop

LIS5:50 pmLisbon Humberto Delgado

$971

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Tue 9/22

3:00 pm-8:40 pm

1 stop13h 40m

Seattle/Tacoma Intl

Fri 10/2

7:00 pm-1:50 pm

1 stop34h 50m

$867

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Sat 9/5

10:55 pm-1:45 pm

1 stop22h 50m

Seattle/Tacoma Intl

Fri 9/18

3:55 pm-10:05 pm

1 stop22h 10m

$891

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Thu 9/10

6:40 am-8:40 pm

2 stops22h 00m

Seattle/Tacoma Intl

Mon 9/14

7:00 pm-11:20 pm

2 stops20h 20m

$904

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Wed 9/30

5:45 pm-8:40 pm

3 stops34h 55m

Seattle/Tacoma Intl

Sat 10/17

3:40 pm-11:30 pm

3 stops23h 50m

$906

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Tue 9/8

5:00 am-4:35 pm

1 stop19h 35m

Seattle/Tacoma Intl

Sun 9/13

12:00 pm-3:30 pm

2 stops19h 30m

$963

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Thu 9/10

5:00 am-4:35 pm

1 stop19h 35m

Seattle/Tacoma Intl

Mon 9/14

6:45 pm-10:30 pm

1 stop19h 45m

$963

Quickest round-trip

PortoSeattle

OPO Porto - SEA Seattle/Tacoma Intl

OPOSEA

Porto

Tue 9/8

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Sun 9/13

1:30 pm-3:30 pm

1 stop18h 00m

$963

LisbonSeattle

LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl

LISSEA

Lisbon Humberto Delgado

Wed 9/23

5:00 am-11:47 am

1 stop14h 47m

Seattle/Tacoma Intl

Fri 10/2

7:15 am-11:15 am

2 stops20h 00m

$969

LisbonPortland

LIS Lisbon Humberto Delgado - PDX Portland

LISPDX

Lisbon Humberto Delgado

Fri 10/23

7:25 am-9:10 pm

2 stops21h 45m

Portland

Sun 11/1

8:30 am-10:05 am

1 stop17h 35m

$1,023

LisbonPortland

LIS Lisbon Humberto Delgado - PDX Portland

LISPDX

Lisbon Humberto Delgado

Fri 9/11

12:20 pm-8:10 pm

1 stop15h 50m

Portland

Sat 9/19

11:09 pm-8:20 am

1 stop25h 11m

$1,031

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portugal to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to State of Washington?

The month of February is, on average, the cheapest month to fly to State of Washington from Portugal, with most prices found around $897. If you aren’t able to travel to State of Washington during the month of February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $924.

Can stopping save me money on Portugal to State of Washington flights?

You could potentially save up to 7% on your flight if you consider stops on a Portugal to State of Washington flight.

Cheap Portugal to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to State of Washington

Fastest flight time	14h 37m
Direct flights	None

The fastest flight from Portugal to State of Washington takes 14h 37m

There are no direct flights from Portugal to State of Washington. There are no popular flight routes from Portugal to State of Washington.

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Frequently asked questions about flying from Portugal to Washington

When did momondo last update prices for flights from Portugal to Washington?
Prices for flights from Portugal to Washington were last updated today.
How many operators does momondo search for flights from Portugal to Washington?
The number of operators available for flights from Portugal to Washington is 2 as of August 2026.
How old do you have to be to fly from Portugal to Washington?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents you'll need for your trip to Washington may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Portugal to State of Washington

Compare and see reviews for airlines that fly from Portugal to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $1,041	Free Cancellation	Rating 7.8 8,497 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to Washington?

It is quick and easy to find Portugal to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

Can I find flights from Portugal to Washington with flexible booking policies on momondo?

Yes. All flights to Washington from Portugal on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portugal to Washington?

Once all potential Portugal to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portugal to Washington right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.