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Cheap flights from Washington to Porto from $322

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Porto departing on 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:04 am - 10:35 amPDX  Portland-OPO Porto
20h 31m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$737Delta
Mon, Feb 1 - Wed, Feb 24
KLM Logo
1:20 pm - 10:30 amPDX  Portland-OPO Porto
13h 10m1 stop Amsterdam Schiphol
KLM Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$737KLM
Mon, Feb 1 - Wed, Feb 24
Delta Logo
6:04 am - 10:35 amPDX  Portland-OPO Porto
20h 31m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle
Delta Logo
5:00 am - 6:43 pmOPO  Porto-PDX Portland
21h 43m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$747Delta
Mon, Feb 1 - Wed, Feb 24
American Airlines Logo
5:00 am - 7:40 amPDX  Portland-OPO Porto
18h 40m2 stops Dallas/Fort Worth Madrid Barajas
American Airlines Logo
8:40 pm - 11:05 amOPO  Porto-PDX Portland
22h 25m2 stops Madrid Barajas Dallas/Fort Worth
$754American Airlines
Tue, Nov 24 - Wed, Dec 2
Multiple Airlines Logo
6:00 am - 7:40 amPDX  Portland-OPO Porto
17h 40m2 stops Dallas/Fort Worth Madrid Barajas
Multiple Airlines Logo
4:40 pm - 12:54 pmOPO  Porto-PDX Portland
28h 14m2 stops Madrid Barajas Dallas/Fort Worth
$754Multiple Airlines
Tue, Nov 24 - Wed, Dec 2
United Airlines Logo
8:46 am - 9:30 amPDX  Portland-OPO Porto
16h 44m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 10:17 amOPO  Porto-PDX Portland
29h 42m2 stops Newark Chicago O'Hare Intl
$755United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
10:45 am - 9:30 amPDX  Portland-OPO Porto
14h 45m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
12:35 pm - 10:17 amOPO  Porto-PDX Portland
29h 42m2 stops Newark Chicago O'Hare Intl
$755United Airlines
Mon, Dec 7 - Fri, Dec 11
Lufthansa Logo
7:00 am - 11:45 amSEA  Seattle/Tacoma Intl-OPO Porto
21h 45m2 stops Chicago O'Hare Intl Frankfurt am Main
Lufthansa Logo
1:45 pm - 1:00 pmOPO  Porto-SEA Seattle/Tacoma Intl
31h 15m1 stop Munich Franz Josef Strauss
$808Lufthansa
Tue, Oct 27 - Tue, Nov 3
KLM Logo
7:05 am - 9:05 amPDX  Portland-OPO Porto
18h 00m1 stop New York John F Kennedy Intl
KLM Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$823KLM
Wed, Nov 25 - Mon, Nov 30
Lufthansa Logo
7:00 am - 10:20 amSEA  Seattle/Tacoma Intl-OPO Porto
19h 20m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
Lufthansa Logo
6:20 am - 4:59 pmOPO  Porto-SEA Seattle/Tacoma Intl
18h 39m1 stop Munich Franz Josef Strauss
$824Lufthansa
Wed, Oct 7 - Thu, Oct 15

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Delta flights from State of Washington to Porto

Our best Delta deals on State of Washington to Porto flight tickets
Delta
Feb 1
PDX6:04 amPortland
20h 31m
2 stops
OPO10:35 amPorto
Feb 24
OPO5:00 amPorto
14h 20m
1 stop
PDX11:20 amPortland
$737
Delta
Feb 1
PDX6:04 amPortland
20h 31m
2 stops
OPO10:35 amPorto
Feb 24
OPO5:00 amPorto
21h 43m
2 stops
PDX6:43 pmPortland
$747
Delta
Nov 24
PDX11:31 amPortland
26h 29m
2 stops
OPO10:00 pmPorto
Dec 2
OPO5:00 amPorto
14h 20m
1 stop
PDX11:20 amPortland
$767

United Airlines flights from State of Washington to Porto

Our best United Airlines deals on State of Washington to Porto flight tickets
United Airlines
Dec 7
PDX10:45 amPortland
14h 45m
2 stops
OPO9:30 amPorto
Dec 11
OPO12:35 pmPorto
16h 46m
1 stop
PDX9:21 pmPortland
$755
United Airlines
Oct 24
PDX11:30 pmPortland
27h 00m
2 stops
OPO9:30 amPorto
Nov 5
OPO12:35 pmPorto
31h 17m
2 stops
PDX11:52 amPortland
$815
United Airlines
Oct 19
SEA7:00 amSeattle/Tacoma Intl
18h 45m
1 stop
OPO9:45 amPorto
Oct 28
OPO6:00 amPorto
20h 03m
2 stops
SEA7:03 pmSeattle/Tacoma Intl
$820

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Porto 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, momondo users made 832,500 searches. Data last updated August 10, 2026.
Use the filters below to find and compare flights from Washington to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 2/1

6:04 am-10:35 am

2 stops20h 31m

Porto

Wed 2/24

5:00 am-11:20 am

1 stop14h 20m

$737
Quickest round-trip

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 2/1

1:20 pm-10:30 am

1 stop13h 10m

Porto

Wed 2/24

5:00 am-11:20 am

1 stop14h 20m

$737

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 2/1

6:04 am-10:35 am

2 stops20h 31m

Porto

Wed 2/24

5:00 am-6:43 pm

2 stops21h 43m

$747

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 11/24

5:00 am-7:40 am

2 stops18h 40m

Porto

Wed 12/2

8:40 pm-11:05 am

2 stops22h 25m

$754

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 11/24

6:00 am-7:40 am

2 stops17h 40m

Porto

Wed 12/2

4:40 pm-12:54 pm

2 stops28h 14m

$754

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 12/7

8:46 am-9:30 am

2 stops16h 44m

Porto

Fri 12/11

12:35 pm-10:17 am

2 stops29h 42m

$755

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 12/7

10:45 am-9:30 am

2 stops14h 45m

Porto

Fri 12/11

12:35 pm-10:17 am

2 stops29h 42m

$755

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Tue 10/27

7:00 am-11:45 am

2 stops21h 45m

Porto

Tue 11/3

1:45 pm-1:00 pm

1 stop31h 15m

$808

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Wed 11/25

7:05 am-9:05 am

1 stop18h 00m

Porto

Mon 11/30

5:00 am-11:20 am

1 stop14h 20m

$823

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Wed 10/7

7:00 am-10:20 am

2 stops19h 20m

Porto

Thu 10/15

6:20 am-4:59 pm

1 stop18h 39m

$824

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from State of Washington to Porto

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

What is the cheapest month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from State of Washington, with most prices found around $626. If you aren’t able to travel during the month of January, then book flights to Porto from State of Washington during March instead. Flights to Porto in March, while not as cheap as those in January, still average around $669.

How far in advance should I book a flight from Washington to Porto?

You are more likely to see cheaper flights to Porto from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $904 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from State of Washington for as low as $719 on momondo.

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

You could potentially save up to 23% on your flight if you consider stops on a State of Washington to Porto flight.

Cheap State of Washington to Porto flight deals and tips

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

Fastest flight time

14h 00m

Direct flights

None
The fastest flight from State of Washington to Porto takes 14h 00m
There are no direct flights from State of Washington to Porto. There are no popular flight routes from State of Washington to Porto.
Search flight deals

Frequently asked questions about flying from Washington to Porto

  • When did momondo last update prices for flights from Washington to Porto Airport?

    Prices for flights from Washington to Porto Airport are updated daily.

  • How many operators does momondo search for flights from Washington to Porto Airport?

  • How old do you have to be to fly from Washington to Porto Airport?

    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 Washington to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents you'll need for your trip to Porto Airport 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 Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Porto

Compare and see reviews for airlines that fly from State of Washington to Porto with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $490Free CancellationRating
7.8
1,555 reviews
Search KLM flights
LufthansaPriceFrom $503Free CancellationRating
6.8
8,176 reviews
Search Lufthansa flights
DeltaPriceFrom $588Free CancellationRating
7.8
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $654Free CancellationRating
7.4
10,102 reviews
Search United Airlines flights
Air CanadaPriceFrom $660Free CancellationRating
7.1
11,462 reviews
Search Air Canada flights
Turkish AirlinesPriceFrom $692Free CancellationRating
7.4
4,480 reviews
Search Turkish Airlines flights
Air FrancePriceFrom $905Free CancellationRating
7.5
1,640 reviews
Search Air France flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Pinhao
Esposende
Lamego
Chaves
Arcos de Valdevez
Guimarães
Viseu
Espinho
Ponte de Lima
Mesao Frio
Penafiel
Baiao

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Porto. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Porto from Washington which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Porto.

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

Of course. momondo tracks the price of Washington to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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