HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portimão

$316+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — FAO
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Portimão with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$693
(oojo)

One-way from

$316
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$811
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 ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

Find 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 May 1, 2025.

This oojo deal was found by Cheapflights users on 5/1. 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.
Wed 11/1910:30 pmIAD - FAO
1 stop12h 15mTAP AIR PORTUGAL
Mon 12/14:35 pmFAO - IAD
1 stop27h 40mTAP AIR PORTUGAL
Deal found 5/1$686
This Mytrip deal was found by Cheapflights users on 5/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/810:20 pmIAD - FAO
2 stops14h 20mMultiple Airlines
Wed 5/214:05 pmFAO - IAD
2 stops28h 15mMultiple Airlines
Deal found 5/1$750
This KLM deal was found by Cheapflights users on 5/1. 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.
Fri 10/31:00 pmIAD - FAO
2 stops15h 45mKLM
Fri 10/109:30 pmFAO - IAD
1 stop23h 05mKLM
Deal found 5/1$944
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Wed 11/199:25 pmIAD - FAO
2 stops45h 25mTurkish Airlines
Mon 12/16:05 amFAO - IAD
2 stops34h 10mTurkish Airlines
Deal found 4/30$956
This CheapOair deal was found by Cheapflights users on 4/30. 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.
Tue 5/65:20 pmIAD - FAO
1 stop20h 40mAer Lingus
Wed 5/147:40 pmFAO - IAD
2 stops29h 25mAer Lingus
Deal found 4/30$1,038
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Sat 8/92:25 pmIAD - FAO
2 stops21h 55mAir Canada
Sat 8/236:05 amFAO - IAD
2 stops19h 56mAir Canada
Deal found 4/30$1,108
This KAYAK deal was found by Cheapflights users on 5/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/810:40 pmIAD - FAO
1 stop15h 30mBritish Airways
Mon 7/141:15 pmFAO - IAD
1 stop31h 40mBritish Airways
Deal found 5/1$1,155
This KAYAK deal was found by Cheapflights users on 4/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/3010:05 pmIAD - FAO
1 stop16h 10mScandinavian Airlines
Tue 7/298:05 pmFAO - IAD
1 stop28h 54mScandinavian Airlines
Deal found 4/30$1,189
This SWISS deal was found by Cheapflights users on 4/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/308:45 pmIAD - FAO
1 stop16h 40mSWISS
Thu 7/316:30 pmFAO - IAD
1 stop26h 45mSWISS
Deal found 4/30$1,221
This Delta deal was found by Cheapflights users on 4/30. 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.
Sat 7/512:13 pmIAD - FAO
2 stops24h 27mDelta
Wed 7/306:40 pmFAO - IAD
1 stop26h 40mDelta
Deal found 4/30$1,228
This Lufthansa deal was found by Cheapflights users on 4/30. 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 6/305:10 pmIAD - FAO
2 stops16h 55mLufthansa
Tue 7/293:55 pmFAO - IAD
1 stop32h 30mLufthansa
Deal found 4/30$1,241
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:10 pmIAD - FAO
2 stops16h 25mUnited Airlines
Sun 7/133:25 pmFAO - IAD
2 stops53h 50mUnited Airlines
Deal found 4/29$1,376

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 May 1, 2025.
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

Fri 5/9

8:25 pm-5:50 pm

1 stop16h 25m

Faro

Tue 5/13

6:20 am-3:50 pm

1 stop14h 30m

$756

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 5/6

10:20 pm-5:20 pm

1 stop14h 00m

Faro

Tue 6/10

6:05 am-3:20 pm

1 stop14h 15m

$876

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 5/6

5:20 pm-7:00 pm

1 stop20h 40m

Faro

Wed 5/14

7:40 pm-8:05 pm

2 stops29h 25m

$1,038

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Fri 7/18

10:05 pm-5:55 pm

1 stop14h 50m

Faro

Sat 7/26

7:35 pm-7:59 pm

2 stops29h 24m

$1,299

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 7/8

5:10 pm-2:35 pm

2 stops16h 25m

Faro

Sun 7/13

3:25 pm-4:15 pm

2 stops53h 50m

$1,376

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 7/7

8:45 pm-9:10 am

2 stops55h 25m

Faro

Sun 7/13

9:10 am-4:15 pm

2 stops36h 05m

$1,388

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 7/8

5:10 pm-1:10 pm

2 stops15h 00m

Faro

Sun 7/13

2:00 pm-1:30 pm

2 stops28h 30m

$1,433

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 5/20

1:30 pm-11:50 pm

2 stops29h 20m

Faro

Tue 5/27

6:05 am-11:45 am

2 stops34h 40m

$1,458

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Mon 7/7

12:40 pm-3:05 pm

2 stops21h 25m

Faro

Tue 7/15

6:05 am-9:25 pm

3 stops20h 20m

$1,505

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 7/8

11:15 pm-3:30 pm

2 stops35h 15m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 13 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portimão (average of $628). Flying from Washington, D.C. Dulles Intl Airport to Portimão in June is currently the most expensive (average of $1,324). 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.

Rainfall in Portimão by month

Plan your trip to Portimão by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portimão ranges from 0.1 - 4.6 inches per month. December is typically the wettest month, when rainfall can reach 4.6 in. July is typically the driest time to visit Portimão when rainfall is around 0.1 in.

Temperature in Portimão by month

Plan your trip to Portimão by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portimão, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

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 May 1, 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS from Washington, D.C. to Portimão. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,791 reviews
Delta
8.0
Very good
7,934 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding 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.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Portimão one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Portimão are TAP AIR PORTUGAL ($369), Delta ($626), and Lufthansa ($933).

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Portimão (average of $628). Flying from Washington, D.C. Dulles Intl Airport to Portimão in June is currently the most expensive (average of $1,324). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$526Average$744FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$645Average$907FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.