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

The cheapest airlines for a one-way flight from Portugal to Washington, D.C. Dulles Intl Airport are Royal Air Maroc ($394), TAP AIR PORTUGAL ($426), and Aer Lingus ($514).

What is the cheapest day to fly from Portugal to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Portugal to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the cheapest flights from Portugal to Washington, D.C. Dulles Intl Airport?

The cheapest flight price from Portugal to Washington, D.C. Dulles Intl Airport is $428. On average you can expect to pay $2,354. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $543.

What are the most reliable airlines from Portugal to Washington, D.C. Dulles Intl Airport?

Consider JetBlue (62%), TAP AIR PORTUGAL (60%) or Air Canada (57%) when booking your flight. These represent the most reliable airlines when flying from Portugal to Washington, D.C. Dulles Intl Airport.

What are the most popular airlines that fly from Portugal to Washington, D.C. Dulles Intl Airport?

Before booking your flight from Portugal to Washington, D.C. Dulles Intl Airport check out the most popular airlines for this route: Lufthansa, TAP AIR PORTUGAL or United Airlines.

What is the cheapest day to fly round-trip from Portugal to Washington, D.C. Dulles Intl Airport?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 23%.

How far in advance should I book a flight from Portugal to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 49 days in advance to save up to 75% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portugal to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $572, or $751 for flights within the next 24 hours.

What is the cheapest month to fly from Portugal to Washington, D.C. Dulles Intl Airport?

The best pricing can be found in the month of September. Prices to Washington, D.C. Dulles Intl Airport from Portugal average $680. You can even find prices in September for less than $680, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $481. The month of August appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Portugal. Flying in the targeted month can save you up to 30%.

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

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

How can I find direct flights from Portugal to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Portugal to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$337+ Flights from Portugal to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Portugal to Dulles Intl

Round-trip from	$482 (lol.travel)
One-way from	$337 (Mytrip)
Popular in	August
Cheapest in	September
Average price	$883
Good round-trip deal	$658 or less
Good one-way deal	$650 or less

From Portugal to Washington, D.C. Dulles Intl

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One-way flight from Portugal to Washington, D.C. Dulles Intl

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Highest demand for flights based on searches. 10% potential increase in price ($84 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Portugal to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from Portugal to Washington, D.C. Dulles Intl.

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Find flight deals from Portugal to Dulles Intl

Cheapest flights from Portugal to Dulles Intl
Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Thu 9/189:15 pmOPO - IAD

1 stop23h 05mTAP AIR PORTUGAL

Wed 10/110:20 pmIAD - OPO

1 stop13h 45mTAP AIR PORTUGAL

Deal found 7/29

$482

Wed 8/275:00 amLIS - IAD

1 stop15h 35mDelta

Wed 9/39:20 pmIAD - LIS

1 stop15h 35mDelta

Deal found 7/30

$539

Fri 8/297:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Wed 11/126:50 pmIAD - LIS

1 stop15h 20mMultiple Airlines

Deal found 7/28

$548

Fri 8/297:30 pmLIS - IAD

1 stop25h 05mKLM

Sat 9/135:25 pmIAD - LIS

1 stop12h 30mKLM

Deal found 7/29

$551

Mon 9/15:05 amLIS - IAD

1 stop13h 25mUnited Airlines

Mon 9/1510:20 pmIAD - LIS

1 stop18h 30mUnited Airlines

Deal found 7/30

$553

Wed 10/86:15 amOPO - IAD

1 stop14h 20mDelta

Tue 10/217:59 pmIAD - OPO

2 stops14h 31mDelta

Deal found 7/30

$553

Thu 9/118:25 amLIS - IAD

1 stop11h 35mAmerican Airlines

Sat 9/2710:45 pmIAD - LIS

1 stop14h 20mAmerican Airlines

Deal found 7/30

$559

Thu 9/188:20 pmOPO - IAD

1 stop24h 15mMultiple Airlines

Wed 10/19:20 pmIAD - OPO

1 stop30h 05mMultiple Airlines

Deal found 7/29

$560

Thu 9/188:15 amOPO - IAD

1 stop11h 45mAmerican Airlines

Wed 10/14:35 pmIAD - OPO

1 stop10h 00mAmerican Airlines

Deal found 7/29

$564

Thu 9/1110:00 amLIS - IAD

1 stop14h 37mVirgin Atlantic

Sat 9/271:00 pmIAD - LIS

2 stops16h 45mVirgin Atlantic

Deal found 7/29

$567

Thu 9/116:35 amLIS - IAD

1 stop13h 25mIberia

Sat 9/274:35 pmIAD - LIS

1 stop14h 15mIberia

Deal found 7/30

$568

Wed 12/246:00 amOPO - IAD

1 stop14h 50mLufthansa

Sat 1/36:00 pmIAD - OPO

1 stop16h 05mLufthansa

Deal found 7/29

$569

Best flights from Portugal to Dulles Intl
Discover carefully curated flight deals from Portugal to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Thu 9/189:15 pmOPO - IAD

1 stop23h 05mTAP AIR PORTUGAL

Wed 10/110:20 pmIAD - OPO

1 stop13h 45mTAP AIR PORTUGAL

Deal found 7/29

$482

Wed 8/275:00 amLIS - IAD

1 stop15h 35mDelta

Wed 9/39:20 pmIAD - LIS

1 stop15h 35mDelta

Deal found 7/30

$539

Thu 9/117:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Sat 9/279:20 pmIAD - LIS

1 stop15h 35mMultiple Airlines

Deal found 7/28

$547

Fri 8/297:30 pmLIS - IAD

1 stop25h 05mKLM

Sat 9/135:25 pmIAD - LIS

1 stop12h 30mKLM

Deal found 7/29

$551

Mon 9/15:05 amLIS - IAD

1 stop13h 25mUnited Airlines

Mon 9/1510:20 pmIAD - LIS

1 stop18h 30mUnited Airlines

Deal found 7/30

$553

Thu 9/118:25 amLIS - IAD

1 stop11h 35mAmerican Airlines

Sat 9/2710:45 pmIAD - LIS

1 stop14h 20mAmerican Airlines

Deal found 7/30

$559

Thu 9/116:35 amLIS - IAD

1 stop13h 25mIberia

Sat 9/274:35 pmIAD - LIS

1 stop14h 15mIberia

Deal found 7/30

$568

Thu 8/285:05 amLIS - IAD

1 stop15h 45mLufthansa

Mon 11/1010:05 pmIAD - LIS

Nonstop7h 10mLufthansa

Deal found 7/28

$576

Thu 9/1111:05 amLIS - IAD

1 stop14h 05mBritish Airways

Sat 9/2710:45 pmIAD - LIS

1 stop30h 20mBritish Airways

Deal found 7/29

$577

Mon 9/13:45 pmLIS - IAD

1 stop29h 30mSWISS

Thu 11/135:25 pmIAD - LIS

1 stop16h 10mSWISS

Deal found 7/28

$598

Wed 10/86:15 amOPO - IAD

1 stop14h 20mDelta

Tue 10/217:59 pmIAD - OPO

2 stops14h 31mDelta

Deal found 7/30

$553

Thu 9/188:20 pmOPO - IAD

1 stop24h 15mMultiple Airlines

Wed 10/19:20 pmIAD - OPO

1 stop30h 05mMultiple Airlines

Deal found 7/29

$560

Last-minute flights from Portugal to Dulles Intl
Discover last-minute flight deals from Portugal to Dulles Intl. Data last updated July 30, 2025 and is based on user searches.

Thu 8/77:30 pmLIS - IAD

1 stop25h 05mMultiple Airlines

Sun 8/106:30 pmIAD - LIS

1 stop15h 20mMultiple Airlines

Deal found 7/28

$622

Thu 8/75:40 amLIS - IAD

1 stop18h 35mDelta

Sun 8/108:31 pmIAD - LIS

2 stops17h 09mDelta

Deal found 7/28

$694

Thu 8/712:20 pmLIS - IAD

Nonstop8h 15mUnited Airlines

Sun 8/1010:15 pmIAD - LIS

Nonstop7h 15mUnited Airlines

Deal found 7/28

$733

Fri 8/89:00 amOPO - IAD

1 stop12h 20mUnited Airlines

Mon 8/185:25 pmIAD - OPO

1 stop11h 20mUnited Airlines

Deal found 7/28

$725

Fri 8/812:20 pmLIS - IAD

Nonstop8h 15mLufthansa

Sun 8/1010:15 pmIAD - LIS

Nonstop7h 15mLufthansa

Deal found 7/28

$946

Fri 8/812:45 pmLIS - IAD

2 stops16h 49mVirgin Atlantic

Sun 8/106:00 amIAD - LIS

2 stops23h 45mVirgin Atlantic

Deal found 7/28

$964

Fri 8/810:35 pmOPO - IAD

1 stop26h 30mMultiple Airlines

Mon 8/1810:20 pmIAD - OPO

2 stops19h 05mMultiple Airlines

Deal found 7/28

$1,043

Fri 8/85:55 amLIS - IAD

1 stop15h 20mSWISS

Sun 8/105:45 pmIAD - LIS

2 stops39h 00mSWISS

Deal found 7/28

$1,114

Fri 8/86:00 amOPO - IAD

2 stops20h 25mAir Canada

Mon 8/182:25 pmIAD - OPO

2 stops14h 10mAir Canada

Deal found 7/28

$1,183

Tue 8/194:20 pmOPO - IAD

1 stop28h 15mKLM

Mon 8/256:30 pmIAD - OPO

1 stop16h 00mKLM

Deal found 7/28

$637

Tue 8/266:15 amOPO - IAD

1 stop14h 20mDelta

Tue 9/25:25 pmIAD - OPO

1 stop17h 10mDelta

Deal found 7/30

$563

Tue 8/266:00 amOPO - IAD

1 stop14h 50mUnited Airlines

Tue 9/210:18 pmIAD - OPO

2 stops30h 02mUnited Airlines

Deal found 7/30

$605

One-way flights from Portugal to Dulles Intl
Search for one-way flight options from Portugal to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Tue 10/1410:00 pmOPO - IAD

2 stops22h 20mMultiple Airlines

Deal found 7/29

$337

Sun 10/127:00 pmOPO - IAD

1 stop29h 05mRoyal Air Maroc

Deal found 7/29

$394

Tue 10/219:00 amOPO - IAD

1 stop11h 20mTAP AIR PORTUGAL

Deal found 7/30

$426

Fri 9/269:45 pmLIS - IAD

2 stops27h 14mMultiple Airlines

Deal found 7/27

$500

Fri 8/2212:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 7/28

$511

Sat 10/1811:25 amLIS - IAD

1 stop33h 25mAer Lingus

Deal found 7/28

$514

Tue 10/76:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 7/28

$525

Sat 9/68:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 7/29

$546

Thu 8/286:35 amLIS - IAD

1 stop13h 25mFinnair

Deal found 7/29

$551

Mon 8/256:35 amLIS - IAD

1 stop13h 25mIberia

Deal found 7/28

$555

Fri 8/298:25 amLIS - IAD

1 stop11h 35mAmerican Airlines

Deal found 7/29

$556

Sat 9/205:40 amLIS - IAD

2 stops18h 57mDelta

Deal found 7/30

$588

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/18

9:15 pm-3:20 pm

1 stop23h 05m

Washington, D.C. Dulles Intl

Wed 10/1

10:20 pm-5:05 pm

1 stop13h 45m

$482

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 8/27

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/3

9:20 pm-5:55 pm

1 stop15h 35m

$539

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/11

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Sat 9/27

9:20 pm-5:55 pm

1 stop15h 35m

$547

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 8/29

7:30 pm-3:35 pm

1 stop25h 05m

Washington, D.C. Dulles Intl

Sat 9/13

5:25 pm-10:55 am

1 stop12h 30m

$551

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/1

5:05 am-1:30 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 9/15

10:20 pm-9:50 pm

1 stop18h 30m

$553

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 10/8

6:15 am-3:35 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 10/21

7:59 pm-3:30 pm

2 stops14h 31m

$553

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/11

8:25 am-3:00 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 9/27

10:45 pm-6:05 pm

1 stop14h 20m

$559

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/18

8:20 pm-3:35 pm

1 stop24h 15m

Washington, D.C. Dulles Intl

Wed 10/1

9:20 pm-8:25 am

1 stop30h 05m

$560

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 9/18

8:15 am-3:00 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 10/1

4:35 pm-7:35 am

1 stop10h 00m

$564

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/11

6:35 am-3:00 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Sat 9/27

4:35 pm-11:50 am

1 stop14h 15m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 39 results

Best time to book a flight from Portugal to Dulles Intl

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

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

Currently, July is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Portugal to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 PT to IAD?

When flying from Portugal to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 38% versus a flight in the morning.

Weekly flight availability from Portugal to Washington, D.C. Dulles Intl Airport

The most flights from PT0 to IAD are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Portugal to Washington, D.C. Dulles Intl Airport, such as Delta, KLM, and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

KLM

7.8

Good

1,383 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

Finnair

7.6

Good

1,316 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

SWISS

7.5

Good

1,686 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

United Airlines

7.4

Good

8,896 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

8.0

Excellent

Michael,Jul 2025

AMS - ATL

Related info for your journey

What are the cheapest airlines to fly from Portugal to Washington, D.C. Dulles Intl Airport one-way?
The cheapest airlines for a one-way flight from Portugal to Washington, D.C. Dulles Intl Airport are Royal Air Maroc ($394), TAP AIR PORTUGAL ($426), and Aer Lingus ($514).
What are the most reliable airlines from Portugal to Washington, D.C. Dulles Intl Airport?
Consider JetBlue (62%), TAP AIR PORTUGAL (60%) or Air Canada (57%) when booking your flight. These represent the most reliable airlines when flying from Portugal to Washington, D.C. Dulles Intl Airport.
What are the cheapest flights from Portugal to Washington, D.C. Dulles Intl Airport?
The cheapest flight price from Portugal to Washington, D.C. Dulles Intl Airport is $428. On average you can expect to pay $2,354. The most popular route, (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), can usually be booked for $543.
Can I find deals for flights from Portugal to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Portugal to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Dulles Intl.
Can I find deals for business class flights from Portugal to Dulles Intl?
Yes. Cheapflights offers flight deals from Portugal to Dulles Intl 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 Portugal to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Portugal to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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Top 3 airlines flying from Portugal to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
TAP AIR PORTUGAL	Cheapest$492	Average$769	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$534	Average$634	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$536	Average$657	FlexibilityNo cancel fee	On-time76%

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$337+ Cheap flights from Portugal to Dulles Intl (IAD)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to Dulles Intl with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Portugal to Dulles Intl

Keep the following information in mind while searching for Portugal to Dulles Intl flight deals. Data was last updated July 30, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Portugal to Dulles Intl

Cheapest flights from Portugal to Dulles IntlExplore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Portugal to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Portugal with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington, D.C. Dulles Intl Airport

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

What is the cheapest time of day to fly from PT to IAD?

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

Weekly flight availability from Portugal to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Portugal to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 30, 2025.

Reviews of airlines servicing Dulles Intl

Read through reviews of airlines operating flights from Portugal to Washington, D.C. Dulles Intl Airport, such as Delta, KLM, and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Dulles Intl. 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 Portugal to Washington, D.C. Dulles Intl Airport one-way?

What are the most reliable airlines from Portugal to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Portugal to Washington, D.C. Dulles Intl Airport?

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

How can I find direct flights from Portugal to Dulles Intl?

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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.

Alternative routes for Portugal to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Portugal to Dulles Intl

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Cheapest flights from Portugal to Dulles Intl
Explore the most affordable flight options available from Portugal to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.