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Portimão

$382+ Cheap flights from Dulles Intl (IAD) to Portimão, 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — FAO
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Dulles Intl to Portimão

Cheapest flights from Dulles Intl to Portimão
Explore the most affordable flight options available from Dulles Intl to Portimão. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This KLM deal was found by Cheapflights users on 2/2. 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.
Mon 2/236:05 pm
IAD
-
FAO
1 stop19h 50m
KLM
Tue 3/107:45 pm
FAO
-
IAD
1 stop25h 20m
KLM
Deal found 2/2$530
This KLM deal was found by Cheapflights users on 2/2. 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.
Wed 3/46:05 pm
IAD
-
FAO
1 stop33h 20m
KLM
Wed 3/116:55 pm
FAO
-
IAD
1 stop26h 10m
KLM
Deal found 2/2$535
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/49:45 am
IAD
-
FAO
2 stops20h 55m
Multiple Airlines
Wed 3/112:40 pm
FAO
-
IAD
1 stop31h 00m
Multiple Airlines
Deal found 2/2$537
This KLM deal was found by Cheapflights users on 2/1. 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.
Tue 3/1712:14 pm
IAD
-
FAO
2 stops17h 16m
KLM
Tue 3/247:45 pm
FAO
-
IAD
1 stop25h 20m
KLM
Deal found 2/1$540
This oojo deal was found by Cheapflights users on 2/3. 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.
Sun 4/1910:35 pm
IAD
-
FAO
1 stop13h 45m
TAP AIR PORTUGAL
Sat 4/2511:15 am
FAO
-
IAD
1 stop13h 50m
TAP AIR PORTUGAL
Deal found 2/3$546
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Tue 4/145:35 pm
IAD
-
FAO
1 stop15h 15m
Brussels Airlines
Thu 4/2312:10 pm
FAO
-
IAD
1 stop30h 20m
Brussels Airlines
Deal found 2/1$556
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Thu 4/1610:35 pm
IAD
-
FAO
1 stop13h 45m
TAP AIR PORTUGAL
Thu 4/236:05 am
FAO
-
IAD
1 stop14h 00m
TAP AIR PORTUGAL
Deal found 2/1$561
This oojo deal was found by Cheapflights users on 2/1. 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.
Fri 5/18:20 pm
IAD
-
FAO
1 stop16h 35m
Scandinavian Airlines
Sat 5/96:45 pm
FAO
-
IAD
1 stop27h 05m
Scandinavian Airlines
Deal found 2/1$562
This Rumbo deal was found by Cheapflights users on 2/2. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:24 pm
IAD
-
FAO
2 stops17h 26m
Scandinavian Airlines
Tue 3/1011:40 am
FAO
-
IAD
1 stop34h 35m
Scandinavian Airlines
Deal found 2/2$574
This KLM deal was found by Cheapflights users on 2/2. 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.
Sun 3/87:05 pm
IAD
-
FAO
1 stop19h 20m
KLM
Sun 3/298:00 pm
FAO
-
IAD
1 stop24h 35m
KLM
Deal found 2/2$585

Find flight deals from Dulles Intl to Portimão

Keep the following information in mind while searching for Dulles Intl to Portimão flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$530
(KLM)

One-way from

$382
(United Airlines)

Popular in

June

Cheapest in

August

Average price

$695
Provider with most accurate pricing for Washington, D.C. (WAS)-Faro flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Faro flights.
Search Deals
From Washington, D.C. Dulles Intl to Portimão
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Portimão
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($283 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Portimão 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 February 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Portimão that are best for you.

Fly from

Dulles Intl

Fly to

Portimão

Route

Depart

Return

Price

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 2/23

6:05 pm-6:55 pm

1 stop19h 50m

Faro

Tue 3/10

7:45 pm-5:05 pm

1 stop25h 20m

$530

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Sun 4/19

8:20 pm-9:40 am

1 stop32h 20m

Faro

Sat 4/25

7:35 pm-4:50 pm

2 stops26h 15m

$530

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 3/17

7:05 pm-9:35 am

1 stop34h 30m

Faro

Tue 3/24

7:45 pm-5:05 pm

1 stop25h 20m

$535

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Wed 3/4

6:05 pm-8:25 am

1 stop33h 20m

Faro

Wed 3/11

6:55 pm-5:05 pm

1 stop26h 10m

$535

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Sun 4/19

10:35 pm-5:20 pm

1 stop13h 45m

Faro

Sat 4/25

11:15 am-8:05 pm

1 stop13h 50m

$546

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Thu 4/16

10:35 pm-11:50 pm

1 stop20h 15m

Faro

Sat 4/25

11:15 am-8:05 pm

1 stop13h 50m

$561

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Fri 5/1

8:20 pm-6:45 pm

2 stops17h 25m

Faro

Sat 5/9

6:45 pm-4:50 pm

1 stop27h 05m

$589

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Wed 3/4

12:24 pm-9:10 am

2 stops15h 46m

Faro

Sun 3/8

6:50 pm-5:05 pm

1 stop26h 15m

$590

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Sat 5/2

6:50 pm-9:40 am

2 stops57h 50m

Faro

Sat 5/9

6:45 pm-4:50 pm

1 stop27h 05m

$591

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 6/15

5:20 pm-9:50 am

1 stop11h 30m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 14 results
1
2

Best time to book a flight from Dulles Intl to Portimão

Have a flexible travel schedule? Discover the best time to fly to Portimão from Dulles Intl 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, D.C. Dulles Intl Airport to Portimão

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Portimão?

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portimão (average of $512). Flying from Washington, D.C. Dulles Intl Airport to Portimão in December is currently the most expensive (average of $924). 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.

Reviews of airlines servicing Portimão

Get insights into the airlines that provide service to Portimão. 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 Portimão. Reviews last updated February 4, 2026.
See what other customers who have flown with Aer Lingus and TAP AIR PORTUGAL from Washington, D.C. Dulles Intl Airport to Portimão have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,444 reviews

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
Aer Lingus
7.2
Good
1,444 reviews
Aer Lingus
7.2
Good
1,444 reviews

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
TAP AIR PORTUGAL
7.1
Good
2,133 reviews
Aer Lingus
7.2
Good
1,444 reviews

Entertainment

6.9

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Portimão. 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 Washington, D.C. Dulles Intl Airport to Portimão?

    A quick flight from Washington, D.C. Dulles Intl Airport to Portimão can take about 19h 50m. KLM provides one of the quickest options available for as low as $530. The distance from Washington, D.C. Dulles Intl Airport to Portimão is about 3688 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Dulles Intl to Portimão that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Portimão flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Portimão?

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

  • Can I find deals for business class flights from Dulles Intl to Portimão?

    Yes. Cheapflights offers flight deals from Dulles Intl to Portimão 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 Washington, D.C. Dulles Intl Airport to Portimão?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portimão (average of $512). Flying from Washington, D.C. Dulles Intl Airport to Portimão in December is currently the most expensive (average of $924). 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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Top 2 airlines flying from Dulles Intl to Portimão

Discover the top 2 airlines that operate flights from Dulles Intl to Portimão. 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 February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$547Average$977FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$738Average$939FlexibilityNo cancel feeOn-timeN/A

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