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

One-way options have recently been found by users for as low as $346 on PLAY. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $376 and Royal Air Maroc from $383 one-way.

What are the most popular routes from Washington, D.C. to Portugal?

While some choose either Washington, D.C. Reagan-National - Lisbon Humberto Delgado or Baltimore/Washington - Lisbon Humberto Delgado, Washington, D.C. Dulles Intl - Lisbon Humberto Delgado is the most popular route from Washington, D.C. to Portugal.

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

Looking for the cheapest flight from Washington, D.C. to Portugal? While on average our users pay $1,532, our data indicates the cheapest price to be $277. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $532.

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

The top 3 most reliable airlines when flying from Washington, D.C. to Portugal are TAP AIR PORTUGAL (83%), JetBlue (78%) and Air Canada (69%).

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

Consider American Airlines, Air France or Royal Air Maroc when booking your flight. These represent the most popular airlines when flying from Washington, D.C. to Portugal.

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

Thursday flights are generally found to be more expensive for flights from Washington, D.C. to Portugal. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Portugal.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 45 days in advance, which can save you up to 39% on flights from Washington, D.C. to Portugal compared to booking the week you need them. Waiting 45 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $998. For sooner than that we have options available in the next 3 days from $998.

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

Flights from Washington, D.C. to Portugal lean towards being more expensive in December. Prices are generally better when you fly from Washington, D.C. to Portugal in February, with the cheapest ticket starting at $349.

Can I find deals for flights from Washington, D.C. to Portugal that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to Portugal?

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

Can I find deals for business class flights from Washington, D.C. to Portugal?

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

$603+ Flights from Washington, D.C. to Portugal

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Cheap flight deals from Washington, D.C. to Portugal

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$493 (Gotogate)
One-way from	$275 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$891
Good round-trip deal	$611 or less
Good one-way deal	$370 or less

Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.

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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.

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From Washington, D.C. (WAS) to Portugal

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One-way flight from Washington, D.C. (WAS) to Portugal

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Highest demand for flights based on searches. 1% potential increase in price ($11 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Portugal.

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Price to beat on a one-way flight from Washington, D.C. (WAS) to Portugal.

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Find flight deals from Washington, D.C. to Portugal

Cheapest flights from Washington, D.C. to Portugal
Explore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Thu 10/307:05 pmBWI - LIS

1 stop21h 10mPLAY

Mon 11/39:15 pmLIS - BWI

1 stop24h 40mPLAY

Deal found 4/22

$390

Fri 9/196:50 pmBWI - FAO

1 stop20h 55mPLAY

Sat 10/49:45 pmFAO - BWI

1 stop24h 55mPLAY

Deal found 4/22

$444

Sun 11/98:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Sun 11/164:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/21

$493

Tue 10/710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 10/135:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/22

$511

Mon 10/135:45 pmIAD - PDL

1 stop12h 00mTAP AIR PORTUGAL

Mon 10/203:50 pmPDL - IAD

1 stop27h 30mTAP AIR PORTUGAL

Deal found 4/22

$561

Tue 5/610:20 pmIAD - FAO

2 stops16h 15mMultiple Airlines

Wed 5/144:05 pmFAO - IAD

2 stops33h 45mMultiple Airlines

Deal found 4/21

$567

Wed 10/86:50 pmBWI - OPO

1 stop20h 30mPLAY

Sun 10/129:05 pmOPO - BWI

1 stop25h 35mPLAY

Deal found 4/22

$579

Wed 6/46:50 pmBWI - FAO

2 stops22h 00mMultiple Airlines

Wed 6/113:00 pmFAO - BWI

2 stops31h 40mMultiple Airlines

Deal found 4/20

$583

Wed 9/179:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Tue 9/306:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 4/21

$594

Sun 11/98:30 pmIAD - LIS

1 stop14h 35mMultiple Airlines

Tue 11/186:10 pmLIS - IAD

2 stops28h 05mMultiple Airlines

Deal found 4/21

$596

Thu 5/86:50 pmBWI - LIS

2 stops21h 55mMultiple Airlines

Thu 5/156:15 pmLIS - BWI

2 stops28h 25mMultiple Airlines

Deal found 4/22

$624

Thu 11/134:35 pmIAD - OPO

2 stops21h 05mAir Canada

Sun 11/166:00 amOPO - IAD

2 stops32h 51mAir Canada

Deal found 4/22

$648

Best flights from Washington, D.C. to Portugal
Discover carefully curated flight deals from Washington, D.C. to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Thu 5/156:50 pmBWI - LIS

1 stop20h 30mPLAY

Mon 5/199:25 pmLIS - BWI

1 stop25h 15mPLAY

Deal found 4/22

$493

Tue 10/710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 10/135:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/22

$511

Sun 10/1910:05 pmIAD - LIS

1 stop17h 35mScandinavian Airlines

Mon 10/274:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/22

$565

Tue 5/610:20 pmIAD - FAO

2 stops16h 15mMultiple Airlines

Wed 5/144:05 pmFAO - IAD

2 stops33h 45mMultiple Airlines

Deal found 4/21

$567

Wed 9/179:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Tue 9/306:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 4/21

$594

Mon 6/164:35 pmDCA - OPO

1 stop12h 00mAir Canada

Thu 6/2612:10 pmOPO - DCA

1 stop14h 38mAir Canada

Deal found 4/22

$673

Tue 7/85:25 pmIAD - OPO

1 stop11h 20mUnited Airlines

Tue 7/2212:50 pmOPO - IAD

2 stops28h 03mUnited Airlines

Deal found 4/22

$690

Thu 9/119:40 pmIAD - LIS

1 stop36h 35mTurkish Airlines

Wed 9/174:30 pmLIS - IAD

1 stop32h 15mTurkish Airlines

Deal found 4/22

$690

Tue 7/18:45 pmIAD - OPO

1 stop33h 40mSWISS

Tue 7/88:40 amOPO - IAD

1 stop12h 35mSWISS

Deal found 4/22

$722

Mon 7/76:30 pmIAD - OPO

1 stop16h 00mKLM

Tue 7/154:20 pmOPO - IAD

1 stop28h 15mKLM

Deal found 4/22

$726

Tue 5/66:50 pmBWI - OPO

2 stops15h 40mDelta

Tue 5/136:20 amOPO - BWI

2 stops19h 24mDelta

Deal found 4/22

$729

Wed 9/311:15 pmIAD - LIS

1 stop17h 05mIcelandair

Sun 9/2810:25 pmLIS - IAD

1 stop25h 55mIcelandair

Deal found 4/20

$786

Last-minute flights from Washington, D.C. to Portugal
Discover last-minute flight deals from Washington, D.C. to Portugal. Data last updated April 22, 2025 and is based on user searches.

Sun 4/276:50 pmBWI - LIS

1 stop20h 50mPLAY

Mon 5/59:40 pmLIS - BWI

1 stop25h 00mPLAY

Deal found 4/21

$555

Sun 4/2710:20 pmIAD - OPO

1 stop12h 00mMultiple Airlines

Tue 5/610:50 pmOPO - IAD

2 stops25h 15mMultiple Airlines

Deal found 4/22

$769

Sun 4/2710:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

Wed 5/77:00 amOPO - IAD

1 stop13h 20mTAP AIR PORTUGAL

Deal found 4/22

$839

Mon 4/288:30 pmBWI - OPO

2 stops18h 45mMultiple Airlines

Thu 5/89:10 pmOPO - BWI

1 stop25h 30mMultiple Airlines

Deal found 4/22

$794

Mon 4/2810:05 pmIAD - LIS

2 stops19h 00mScandinavian Airlines

Wed 5/76:25 pmLIS - IAD

1 stop30h 34mScandinavian Airlines

Deal found 4/22

$835

Mon 4/285:29 pmIAD - OPO

1 stop11h 16mUnited Airlines

Tue 5/136:00 amOPO - IAD

1 stop14h 50mUnited Airlines

Deal found 4/21

$852

Tue 4/298:45 pmIAD - OPO

1 stop33h 40mSWISS

Wed 5/1412:20 pmOPO - IAD

1 stop32h 55mSWISS

Deal found 4/21

$861

Tue 4/291:44 pmIAD - OPO

2 stops20h 46mDelta

Tue 5/611:25 amOPO - IAD

1 stop33h 10mDelta

Deal found 4/22

$869

Tue 4/291:12 pmDCA - OPO

2 stops17h 03mUnited Airlines

Thu 5/812:35 pmOPO - DCA

1 stop12h 06mUnited Airlines

Deal found 4/22

$877

Tue 4/295:40 pmBWI - OPO

2 stops16h 50mDelta

Fri 5/96:40 amOPO - BWI

2 stops17h 27mDelta

Deal found 4/22

$879

Fri 5/25:00 pmIAD - LIS

Nonstop7h 20mMultiple Airlines

Tue 5/67:10 pmLIS - IAD

2 stops28h 55mMultiple Airlines

Deal found 4/21

$803

Fri 5/29:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Thu 5/2210:05 pmLIS - IAD

1 stop26h 00mRoyal Air Maroc

Deal found 4/20

$817

One-way flights from Washington, D.C. to Portugal
Search for one-way flight options from Washington, D.C. to Portugal. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Wed 7/167:42 pmBWI - LIS

1 stop16h 33mMultiple Airlines

Deal found 4/22

$275

Thu 7/176:50 pmBWI - LIS

1 stop20h 30mPLAY

Deal found 4/22

$346

Fri 7/1112:23 pmBWI - OPO

3 stops37h 52mMultiple Airlines

Deal found 4/21

$354

Mon 5/128:30 pmIAD - OPO

3 stops41h 15mMultiple Airlines

Deal found 4/20

$360

Sat 7/51:32 pmIAD - LIS

2 stops26h 28mMultiple Airlines

Deal found 4/22

$371

Wed 10/15:50 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 4/22

$376

Tue 6/106:00 amDCA - LIS

2 stops18h 55mMultiple Airlines

Deal found 4/21

$378

Wed 10/19:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 4/22

$383

Sun 5/258:00 amBWI - FAO

2 stops44h 30mMultiple Airlines

Deal found 4/21

$388

Fri 7/116:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 4/21

$394

Sun 5/253:38 pmIAD - FAO

2 stops48h 37mMultiple Airlines

Deal found 4/21

$412

Mon 9/1510:05 pmIAD - LIS

2 stops19h 00mScandinavian Airlines

Deal found 4/22

$417

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Sun 10/19

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Mon 10/27

9:15 pm-5:55 pm

1 stop24h 40m

$410

BaltimoreFaro

BWI - FAO

BWIFAO

Baltimore/Washington

Tue 5/6

6:50 pm-8:45 pm

1 stop20h 55m

Faro

Wed 5/14

9:45 pm-5:40 pm

1 stop24h 55m

$494

Washington, D.C.Ponta Delgada

IAD - PDL

IADPDL

Washington, D.C. Dulles Intl

Mon 10/13

5:45 pm-9:45 am

1 stop12h 00m

Ponta Delgada Nordela

Mon 10/20

3:50 pm-3:20 pm

1 stop27h 30m

$561

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 5/6

10:20 pm-7:35 pm

2 stops16h 15m

Faro

Wed 5/14

4:05 pm-8:50 pm

2 stops33h 45m

$567

BaltimorePorto

BWI - OPO

BWIOPO

Baltimore/Washington

Wed 10/8

6:50 pm-8:20 pm

1 stop20h 30m

Porto

Sun 10/12

9:05 pm-5:40 pm

1 stop25h 35m

$579

BaltimoreFaro

BWI - FAO

BWIFAO

Baltimore/Washington

Wed 6/4

6:50 pm-9:50 pm

2 stops22h 00m

Faro

Wed 6/11

3:00 pm-5:40 pm

2 stops31h 40m

$583

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Thu 5/8

6:50 pm-9:45 pm

2 stops21h 55m

Lisbon Humberto Delgado

Thu 5/15

6:15 pm-5:40 pm

2 stops28h 25m

$624

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Sun 8/24

6:05 am-4:00 pm

2 stops28h 55m

Lisbon Humberto Delgado

Mon 11/3

4:55 pm-9:53 pm

2 stops33h 58m

$656

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Mon 8/25

2:10 pm-8:40 pm

2 stops25h 30m

Lisbon Humberto Delgado

Mon 11/3

4:55 pm-9:43 pm

2 stops33h 48m

$672

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 6/16

4:35 pm-9:35 am

1 stop12h 00m

Porto

Thu 6/26

12:10 pm-9:48 pm

1 stop14h 38m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 60 results

...

Best time to book a flight from Washington, D.C. to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $612). Flying from Washington, D.C. to Portugal in June is currently the most expensive (average of $1,203). 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 WAS to PT?

It’s typically best to fly out from Washington, D.C. to Portugal in the morning. Doing so could potentially save you 8% on the flight price compared to flying at noon, which is usually more expensive.

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

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

Rainfall in Portugal by month

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

See what other customers who have flown with Delta, KLM and LOT from Washington, D.C. to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,920 reviews

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

7,920 reviews

Delta

8.0

Very good

7,920 reviews

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

1,331 reviews

Delta

8.0

Very good

7,920 reviews

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.

LOT

7.6

Good

1,065 reviews

Delta

8.0

Very good

7,920 reviews

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.

Finnair

7.6

Good

1,272 reviews

Delta

8.0

Very good

7,920 reviews

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

1,582 reviews

Delta

8.0

Very good

7,920 reviews

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

What are the cheapest airlines to fly from Washington, D.C. to Portugal one-way?
One-way options have recently been found by users for as low as $346 on PLAY. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $376 and Royal Air Maroc from $383 one-way.
What are the most popular routes from Washington, D.C. to Portugal?
While some choose either Washington, D.C. Reagan-National - Lisbon Humberto Delgado or Baltimore/Washington - Lisbon Humberto Delgado, Washington, D.C. Dulles Intl - Lisbon Humberto Delgado is the most popular route from Washington, D.C. to Portugal.
What are the most reliable airlines from Washington, D.C. to Portugal?
The top 3 most reliable airlines when flying from Washington, D.C. to Portugal are TAP AIR PORTUGAL (83%), JetBlue (78%) and Air Canada (69%).
What are the cheapest flights from Washington, D.C. to Portugal?
Looking for the cheapest flight from Washington, D.C. to Portugal? While on average our users pay $1,532, our data indicates the cheapest price to be $277. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $532.
Can I find deals for flights from Washington, D.C. to Portugal that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Portugal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Portugal.
Can I find deals for business class flights from Washington, D.C. to Portugal?
Yes. Cheapflights offers flight deals from Washington, D.C. to Portugal 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. to Portugal?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $612). Flying from Washington, D.C. to Portugal in June is currently the most expensive (average of $1,203). 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

Top 10 airlines flying from Washington, D.C. to Portugal

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$328	Average$382	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$422	Average$873	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$423	Average$928	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$435	Average$873	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$457	Average$901	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$536	Average$876	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$538	Average$1,086	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$551	Average$928	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$637	FlexibilityNo cancel fee	On-time75%
Iberia	Cheapest$579	Average$784	FlexibilityNo cancel fee	On-time77%

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$255+ Cheap flights from Washington, D.C. (WAS) to 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Portugal with Cheapflights

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Cheap flight deals from Washington, D.C. to Portugal

Keep the following information in mind while searching for Washington, D.C. to Portugal flight deals. Data was last updated April 22, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Washington, D.C. to Portugal

Cheapest flights from Washington, D.C. to PortugalExplore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Explore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington, D.C. to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

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

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

Find hourly flight availability from Washington, D.C. to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Portugal. Price data was last updated on December 16, 2024.

Rainfall in Portugal by month

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

Temperature in Portugal by month

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

Reviews of airlines servicing Portugal

See what other customers who have flown with Delta, KLM and LOT from Washington, D.C. to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the most popular routes from Washington, D.C. to Portugal?

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

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

Can I find deals for flights from Washington, D.C. to Portugal that include hotel bookings?

How can I find direct flights from Washington, D.C. to Portugal?

Can I find deals for business class flights from Washington, D.C. to Portugal?

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

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Top 10 airlines flying from Washington, D.C. to Portugal

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Cheapest flights from Washington, D.C. to Portugal
Explore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.