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 $254 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include PLAY from $308 and Royal Air Maroc from $392 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 $1,713, our data indicates the cheapest price to be $275. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $511.

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.

$621+ Flights from Washington, D.C. to Portugal - Compare & Save Big

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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	$390 (Booking.com)
One-way from	$254 (oojo)
Popular in	December
Cheapest in	February
Average price	$1,018
Good round-trip deal	$606 or less
Good one-way deal	$375 or less

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in May 2025

Search Deals

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 May 1, 2025.

Thu 10/236:50 pmBWI - LIS

1 stop20h 30mPLAY

Fri 10/319:15 pmLIS - BWI

1 stop24h 40mPLAY

Deal found 4/30

$390

Sat 9/2010:35 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Tue 10/712:00 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 4/28

$467

Sun 12/148:30 pmIAD - FAO

1 stop32h 30mScandinavian Airlines

Sat 1/315:10 pmFAO - IAD

1 stop30h 40mScandinavian Airlines

Deal found 4/29

$482

Sun 10/269:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Mon 11/34:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/30

$504

Tue 11/115:30 pmIAD - FNC

1 stop18h 40mTAP AIR PORTUGAL

Mon 11/247:50 amFNC - IAD

1 stop12h 25mTAP AIR PORTUGAL

Deal found 4/30

$561

Mon 10/135:45 pmIAD - PDL

1 stop17h 00mTAP AIR PORTUGAL

Mon 10/207:40 pmPDL - IAD

1 stop23h 40mTAP AIR PORTUGAL

Deal found 4/30

$561

Fri 10/319:40 pmIAD - LIS

1 stop15h 15mRoyal Air Maroc

Tue 11/45:55 pmLIS - IAD

1 stop29h 45mRoyal Air Maroc

Deal found 4/29

$570

Thu 11/131:00 pmBWI - OPO

2 stops16h 50mDelta

Fri 11/2111:45 amOPO - BWI

2 stops16h 11mDelta

Deal found 4/30

$576

Thu 11/208:30 pmIAD - LIS

1 stop14h 35mMultiple Airlines

Wed 12/312:50 pmLIS - IAD

2 stops33h 25mMultiple Airlines

Deal found 4/29

$582

Thu 10/308:30 pmBWI - LIS

2 stops21h 45mMultiple Airlines

Thu 11/69:25 pmLIS - BWI

2 stops24h 30mMultiple Airlines

Deal found 4/29

$611

Fri 9/195:45 pmIAD - PDL

1 stop10h 55mUnited Airlines

Wed 9/2411:00 amPDL - IAD

1 stop9h 23mUnited Airlines

Deal found 4/29

$665

Sun 9/75:45 pmIAD - OPO

1 stop24h 15mTAP AIR PORTUGAL

Sat 9/2011:00 amOPO - IAD

1 stop14h 05mTAP AIR PORTUGAL

Deal found 4/29

$671

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 May 1, 2025.

Thu 10/236:50 pmBWI - LIS

1 stop20h 30mPLAY

Fri 10/319:15 pmLIS - BWI

1 stop24h 40mPLAY

Deal found 4/30

$390

Tue 9/2310:20 pmIAD - FNC

1 stop17h 40mTAP AIR PORTUGAL

Tue 9/3012:35 pmFNC - IAD

1 stop13h 15mTAP AIR PORTUGAL

Deal found 4/30

$561

Wed 10/221:00 pmBWI - OPO

2 stops16h 40mDelta

Fri 10/315:00 amOPO - BWI

2 stops19h 47mDelta

Deal found 4/30

$651

Mon 7/1412:31 pmIAD - OPO

2 stops16h 04mAir Canada

Tue 7/2212:50 pmOPO - IAD

2 stops27h 39mAir Canada

Deal found 4/30

$673

Wed 8/69:45 amIAD - OPO

1 stop18h 35mUnited Airlines

Tue 8/1912:50 pmOPO - IAD

2 stops28h 04mUnited Airlines

Deal found 4/30

$675

Thu 5/88:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Tue 5/1310:15 pmLIS - IAD

1 stop26h 15mAer Lingus

Deal found 4/29

$677

Fri 9/1910:10 amDCA - OPO

2 stops16h 25mAmerican Airlines

Tue 9/238:15 amOPO - DCA

2 stops16h 00mAmerican Airlines

Deal found 4/29

$677

Wed 5/146:00 amDCA - LIS

3 stops31h 40mMultiple Airlines

Wed 5/217:40 amLIS - DCA

2 stops19h 13mMultiple Airlines

Deal found 4/30

$681

Wed 5/149:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Mon 6/21:15 pmLIS - IAD

1 stop10h 50mRoyal Air Maroc

Deal found 4/29

$681

Wed 5/148:45 pmIAD - OPO

1 stop16h 45mSWISS

Mon 5/192:35 pmOPO - IAD

2 stops30h 40mSWISS

Deal found 4/30

$693

Wed 5/1410:20 pmIAD - OPO

1 stop20h 00mLufthansa

Tue 5/206:00 amOPO - IAD

2 stops18h 25mLufthansa

Deal found 4/30

$698

Tue 8/194:35 pmIAD - OPO

1 stop10h 00mBritish Airways

Wed 8/278:15 amOPO - IAD

2 stops15h 37mBritish Airways

Deal found 4/30

$705

Last-minute flights from Washington, D.C. to Portugal
Discover last-minute flight deals from Washington, D.C. to Portugal. Data last updated May 1, 2025 and is based on user searches.

Tue 5/610:20 pmIAD - OPO

1 stop13h 40mTAP AIR PORTUGAL

Tue 5/139:15 pmOPO - IAD

1 stop23h 05mTAP AIR PORTUGAL

Deal found 4/29

$751

Tue 5/65:00 pmIAD - OPO

1 stop10h 00mMultiple Airlines

Tue 5/1311:50 amOPO - IAD

2 stops36h 15mMultiple Airlines

Deal found 4/29

$778

Tue 5/610:20 pmIAD - PDL

1 stop21h 25mTAP AIR PORTUGAL

Fri 5/166:30 amPDL - IAD

1 stop13h 50mTAP AIR PORTUGAL

Deal found 4/29

$787

Tue 5/69:45 amIAD - OPO

2 stops20h 45mAir Canada

Tue 5/136:00 amOPO - IAD

2 stops34h 14mAir Canada

Deal found 4/29

$853

Tue 5/66:00 amDCA - OPO

2 stops24h 30mAir Canada

Tue 5/136:00 amOPO - DCA

2 stops33h 19mAir Canada

Deal found 4/29

$853

Wed 5/78:30 pmBWI - LIS

3 stops20h 20mMultiple Airlines

Wed 5/148:05 pmLIS - BWI

2 stops32h 28mMultiple Airlines

Deal found 4/30

$724

Wed 5/79:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Mon 5/1212:00 pmLIS - IAD

1 stop12h 05mRoyal Air Maroc

Deal found 4/29

$737

Wed 5/710:20 pmIAD - LIS

Nonstop7h 20mMultiple Airlines

Wed 5/145:55 amLIS - IAD

2 stops39h 41mMultiple Airlines

Deal found 4/30

$746

Wed 5/76:05 amDCA - LIS

3 stops35h 40mMultiple Airlines

Wed 5/144:05 pmLIS - DCA

3 stops35h 40mMultiple Airlines

Deal found 4/30

$847

Thu 5/86:50 pmBWI - LIS

1 stop20h 30mPLAY

Mon 5/199:25 pmLIS - BWI

1 stop25h 15mPLAY

Deal found 4/30

$593

Thu 5/86:50 pmBWI - OPO

2 stops23h 10mMultiple Airlines

Mon 5/124:00 pmOPO - BWI

2 stops30h 40mMultiple Airlines

Deal found 4/29

$718

Thu 5/88:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Tue 5/1310:15 pmLIS - IAD

1 stop26h 15mAer Lingus

Deal found 4/29

$677

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 May 1, 2025.

Sat 8/1610:35 pmIAD - OPO

1 stop16h 50mTAP AIR PORTUGAL

Deal found 4/29

$254

Mon 8/1810:20 pmIAD - OPO

2 stops27h 30mMultiple Airlines

Deal found 4/29

$281

Sun 7/67:38 pmBWI - LIS

1 stop13h 17mMultiple Airlines

Deal found 4/30

$304

Mon 8/181:51 pmBWI - OPO

1 stop16h 04mMultiple Airlines

Deal found 4/29

$304

Sun 8/176:50 pmBWI - LIS

1 stop20h 30mPLAY

Deal found 4/30

$308

Wed 8/68:30 pmIAD - FAO

2 stops17h 10mMultiple Airlines

Deal found 4/30

$316

Mon 8/186:50 pmBWI - OPO

1 stop20h 15mPLAY

Deal found 4/30

$362

Sat 7/197:25 pmIAD - LIS

1 stop29h 25mMultiple Airlines

Deal found 4/29

$369

Wed 8/610:20 pmIAD - FAO

1 stop20h 30mTAP AIR PORTUGAL

Deal found 4/30

$369

Sun 8/176:00 amDCA - LIS

3 stops35h 00mMultiple Airlines

Deal found 4/29

$383

Wed 7/1610:20 pmIAD - LIS

Nonstop7h 15mTAP AIR PORTUGAL

Deal found 4/29

$390

Sun 7/209:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 4/30

$392

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

Washington, D.C.Ponta Delgada

IAD - PDL

IADPDL

Washington, D.C. Dulles Intl

Mon 10/13

5:45 pm-2:45 pm

1 stop17h 00m

Ponta Delgada Nordela

Mon 10/20

7:40 pm-3:20 pm

1 stop23h 40m

$561

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Thu 5/8

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Mon 5/19

9:25 pm-5:40 pm

1 stop25h 15m

$593

Washington, D.C.Ponta Delgada

IAD - PDL

IADPDL

Washington, D.C. Dulles Intl

Fri 9/19

5:45 pm-8:40 am

1 stop10h 55m

Ponta Delgada Nordela

Wed 9/24

11:00 am-4:23 pm

1 stop9h 23m

$665

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 7/14

12:31 pm-9:35 am

2 stops16h 04m

Porto

Tue 7/22

12:50 pm-11:29 am

2 stops27h 39m

$673

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 7/5

7:00 pm-6:55 am

1 stop30h 55m

Porto

Thu 7/17

12:10 pm-8:52 am

2 stops25h 42m

$673

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 5/8

8:25 pm-9:35 pm

1 stop20h 10m

Lisbon Humberto Delgado

Tue 5/13

10:15 pm-7:30 pm

1 stop26h 15m

$677

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 7/1

2:54 pm-11:40 am

2 stops15h 46m

Porto

Wed 7/9

12:20 pm-11:11 pm

2 stops15h 51m

$678

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 7/7

4:30 pm-9:35 am

1 stop12h 05m

Porto

Tue 7/15

12:50 pm-10:27 pm

2 stops14h 37m

$680

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 5/14

9:05 pm-12:15 pm

1 stop10h 10m

Lisbon Humberto Delgado

Mon 6/2

1:15 pm-7:05 pm

1 stop10h 50m

$681

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Wed 5/14

6:00 am-6:40 pm

3 stops31h 40m

Lisbon Humberto Delgado

Wed 5/21

7:40 am-9:53 pm

2 stops19h 13m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 $1,178). 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, Porter Airlines and KLM 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

7,934 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

7,934 reviews

Delta

8.0

Very good

7,934 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.

Porter Airlines

8.0

Very good

285 reviews

Delta

8.0

Very good

7,934 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

1,334 reviews

Delta

8.0

Very good

7,934 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.

Air Transat

7.8

Good

385 reviews

Delta

8.0

Very good

7,934 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

1,069 reviews

Delta

8.0

Very good

7,934 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 $254 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include PLAY from $308 and Royal Air Maroc from $392 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 $1,713, our data indicates the cheapest price to be $275. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $511.
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 $1,178). 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$385	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$422	Average$868	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$423	Average$936	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$435	Average$863	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$457	Average$887	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$536	Average$875	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$538	Average$1,109	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$551	Average$934	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$639	FlexibilityNo cancel fee	On-time75%
Iberia	Cheapest$579	Average$784	FlexibilityNo cancel fee	On-time77%

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$254+ 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 8/16. 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 May 1, 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 May 1, 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 May 1, 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 May 1, 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, Porter Airlines and KLM 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.

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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 May 1, 2025.