What are the cheapest airlines to fly from District of Columbia to Portugal one-way?

One-way options have recently been found by users for as low as $392 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $397 and British Airways from $497 one-way.

How far in advance should I book a flight from District of Columbia to Portugal?

Users have found that booking a flight from District of Columbia to Portugal at least 45 days early can save you up to 39% on average compared to booking a flight this week. If booking 45 days before your flight isn’t an option for you, users have found flights from District of Columbia to Portugal for as little as $998 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $998 for flights departing within the next 3 days.

What is the cheapest month to fly from District of Columbia to Portugal?

February is one of the best times of the year to fly to Portugal from District of Columbia. Prices for February average $913 per person but you can even find prices for as low as $349. The most expensive prices can be found in the month of December. Opting for a February flight can save you 42% on your journey compared to booking in December

How can I find direct flights from District of Columbia to Portugal?

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

Can I find deals for business class flights from District of Columbia to Portugal?

Yes. Cheapflights offers flight deals from District of Columbia 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.

$619+ Flights from District of Columbia to Portugal

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Cheap flight deals from District of Columbia to Portugal

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$511 (Booking.com)
One-way from	$347 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$885
Good round-trip deal	$624 or less
Good one-way deal	$369 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 District of Columbia to Portugal

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One-way flight from District of Columbia 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 District of Columbia to Portugal.

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Price to beat on a one-way flight from District of Columbia to Portugal.

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Find flight deals from District of Columbia to Portugal

Cheapest flights from District of Columbia to Portugal
Explore the most affordable flight options available from District of Columbia to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Mon 6/210:40 pmIAD - OPO

2 stops27h 55mBritish Airways

Wed 6/1812:20 pmOPO - IAD

1 stop31h 40mBritish Airways

Deal found 4/15

$511

Sun 10/269:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Sun 11/164:55 pmLIS - IAD

1 stop29h 20mScandinavian Airlines

Deal found 4/14

$512

Wed 11/268:30 pmIAD - FAO

2 stops57h 40mScandinavian Airlines

Wed 12/310:35 amFAO - IAD

2 stops35h 40mScandinavian Airlines

Deal found 4/15

$520

Wed 5/710:20 pmIAD - FAO

2 stops19h 40mMultiple Airlines

Mon 5/198:10 pmFAO - IAD

2 stops29h 40mMultiple Airlines

Deal found 4/15

$537

Sun 9/2110:20 pmIAD - OPO

1 stop15h 40mTAP AIR PORTUGAL

Sun 9/2810:30 pmOPO - IAD

1 stop21h 50mTAP AIR PORTUGAL

Deal found 4/15

$563

Sun 10/1910:05 pmIAD - LIS

1 stop12h 40mMultiple Airlines

Sun 10/264:55 pmLIS - IAD

1 stop29h 20mMultiple Airlines

Deal found 4/15

$563

Sun 11/98:40 pmIAD - LIS

1 stop9h 55mRoyal Air Maroc

Tue 11/185:55 pmLIS - IAD

1 stop29h 45mRoyal Air Maroc

Deal found 4/15

$584

Tue 9/235:00 pmIAD - PDL

1 stop16h 15mTAP AIR PORTUGAL

Mon 9/297:40 pmPDL - IAD

1 stop23h 40mTAP AIR PORTUGAL

Deal found 4/15

$612

Tue 5/138:45 pmIAD - OPO

1 stop30h 00mMultiple Airlines

Tue 5/206:00 amOPO - IAD

2 stops20h 08mMultiple Airlines

Deal found 4/15

$631

Tue 9/1612:55 pmDCA - OPO

2 stops39h 30mAir Canada

Tue 9/3012:50 pmOPO - DCA

1 stop26h 31mAir Canada

Deal found 4/15

$637

Tue 9/1610:10 pmIAD - OPO

2 stops30h 15mAir Canada

Tue 9/3012:50 pmOPO - IAD

1 stop13h 11mAir Canada

Deal found 4/15

$642

Wed 8/208:15 amIAD - OPO

2 stops20h 05mUnited Airlines

Wed 8/276:00 amOPO - IAD

1 stop14h 50mUnited Airlines

Deal found 4/15

$652

Best flights from District of Columbia to Portugal
Discover carefully curated flight deals from District of Columbia to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 16, 2025.

Mon 6/210:40 pmIAD - OPO

2 stops27h 55mBritish Airways

Wed 6/1812:20 pmOPO - IAD

1 stop31h 40mBritish Airways

Deal found 4/15

$511

Wed 5/710:20 pmIAD - FAO

2 stops19h 40mMultiple Airlines

Mon 5/198:10 pmFAO - IAD

2 stops29h 40mMultiple Airlines

Deal found 4/15

$537

Sun 5/49:45 amIAD - OPO

2 stops27h 30mAir Canada

Tue 5/136:00 amOPO - IAD

2 stops20h 08mAir Canada

Deal found 4/15

$653

Sun 5/1112:35 pmDCA - OPO

2 stops14h 00mAmerican Airlines

Sun 5/258:15 amOPO - DCA

2 stops15h 52mAmerican Airlines

Deal found 4/15

$657

Tue 5/65:00 pmIAD - PDL

1 stop17h 40mTAP AIR PORTUGAL

Fri 5/166:30 amPDL - IAD

1 stop13h 50mTAP AIR PORTUGAL

Deal found 4/15

$657

Wed 4/238:45 pmIAD - OPO

1 stop30h 10mSWISS

Tue 4/2912:15 pmOPO - IAD

1 stop33h 00mSWISS

Deal found 4/15

$661

Sat 6/76:00 amDCA - OPO

1 stop22h 35mUnited Airlines

Fri 11/146:00 amOPO - DCA

2 stops42h 57mUnited Airlines

Deal found 4/15

$661

Tue 4/226:30 pmIAD - OPO

1 stop16h 00mDelta

Mon 4/2811:25 amOPO - IAD

1 stop33h 10mDelta

Deal found 4/15

$664

Tue 7/19:20 pmIAD - OPO

1 stop13h 10mKLM

Mon 7/74:20 pmOPO - IAD

1 stop28h 15mKLM

Deal found 4/15

$682

Sat 6/76:30 pmIAD - OPO

1 stop16h 00mAir France

Thu 11/2011:45 amOPO - IAD

2 stops16h 15mAir France

Deal found 4/15

$701

Tue 4/226:10 pmIAD - OPO

1 stop12h 05mLufthansa

Mon 4/286:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 4/15

$710

Wed 5/79:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Thu 5/1510:05 pmLIS - IAD

1 stop26h 00mRoyal Air Maroc

Deal found 4/15

$714

Last-minute flights from District of Columbia to Portugal
Discover last-minute flight deals from District of Columbia to Portugal. Data last updated April 16, 2025 and is based on user searches.

Mon 4/215:25 pmIAD - OPO

1 stop14h 50mAustrian Airlines

Mon 4/2810:25 amOPO - IAD

1 stop33h 10mAustrian Airlines

Deal found 4/15

$899

Tue 4/226:30 pmIAD - OPO

1 stop16h 00mDelta

Mon 4/2811:25 amOPO - IAD

1 stop33h 10mDelta

Deal found 4/15

$664

Tue 4/2211:00 amDCA - OPO

2 stops23h 30mDelta

Thu 5/16:30 amOPO - DCA

2 stops22h 14mDelta

Deal found 4/15

$679

Tue 4/226:10 pmIAD - OPO

1 stop12h 05mLufthansa

Mon 4/286:15 amOPO - IAD

2 stops14h 35mLufthansa

Deal found 4/15

$710

Tue 4/225:47 pmDCA - OPO

2 stops16h 43mDelta

Tue 4/2911:25 amOPO - DCA

2 stops15h 39mDelta

Deal found 4/15

$679

Wed 4/238:45 pmIAD - OPO

1 stop30h 10mSWISS

Tue 4/2912:15 pmOPO - IAD

1 stop33h 00mSWISS

Deal found 4/15

$661

Wed 4/2312:45 pmIAD - OPO

2 stops22h 00mUnited Airlines

Thu 5/16:00 amOPO - IAD

2 stops22h 59mUnited Airlines

Deal found 4/15

$687

Wed 4/239:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Tue 5/66:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 4/15

$844

Wed 4/234:35 pmIAD - OPO

1 stop10h 00mIberia

Thu 5/88:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/16

$852

Wed 4/238:45 pmIAD - OPO

1 stop30h 10mSWISS

Thu 5/18:40 amOPO - IAD

1 stop12h 35mSWISS

Deal found 4/15

$661

Fri 4/2510:05 pmIAD - LIS

1 stop29h 55mMultiple Airlines

Sat 5/37:00 amLIS - IAD

2 stops17h 59mMultiple Airlines

Deal found 4/15

$891

Sat 4/265:35 pmIAD - OPO

1 stop17h 25mMultiple Airlines

Fri 5/212:15 pmOPO - IAD

1 stop33h 00mMultiple Airlines

Deal found 4/15

$793

One-way flights from District of Columbia to Portugal
Search for one-way flight options from District of Columbia to Portugal. Find affordable one-way fares based on user searches. Data last updated April 16, 2025.

Thu 5/2911:15 pmIAD - FNC

3 stops33h 20mMultiple Airlines

Deal found 4/15

$347

Thu 4/248:30 pmIAD - OPO

3 stops43h 55mMultiple Airlines

Deal found 4/15

$367

Mon 5/128:30 pmIAD - LIS

2 stops21h 35mMultiple Airlines

Deal found 4/14

$369

Tue 6/34:35 pmDCA - LIS

2 stops32h 20mMultiple Airlines

Deal found 4/15

$370

Sun 9/2810:20 pmIAD - FAO

2 stops16h 20mMultiple Airlines

Deal found 4/15

$387

Wed 5/79:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 4/16

$392

Sat 6/74:35 pmDCA - OPO

3 stops35h 25mMultiple Airlines

Deal found 4/15

$393

Sat 7/1210:35 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 4/14

$397

Sun 9/2810:20 pmIAD - FAO

1 stop20h 30mTAP AIR PORTUGAL

Deal found 4/15

$415

Thu 5/110:20 pmIAD - PDL

1 stop14h 15mMultiple Airlines

Deal found 4/16

$431

Mon 6/210:20 pmIAD - OPO

1 stop13h 40mTAP AIR PORTUGAL

Deal found 4/15

$459

Mon 6/25:49 pmDCA - OPO

2 stops21h 01mBritish Airways

Deal found 4/15

$497

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 6/2

10:40 pm-7:35 am

2 stops27h 55m

Porto

Wed 6/18

12:20 pm-3:00 pm

1 stop31h 40m

$511

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Wed 5/7

10:20 pm-11:00 pm

2 stops19h 40m

Faro

Mon 5/19

8:10 pm-8:50 pm

2 stops29h 40m

$537

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 5/13

8:45 pm-7:45 am

1 stop30h 00m

Porto

Tue 5/20

6:00 am-9:08 pm

2 stops20h 08m

$631

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 5/4

9:45 am-6:15 pm

2 stops27h 30m

Porto

Tue 5/13

6:00 am-9:08 pm

2 stops20h 08m

$653

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 5/13

9:40 am-11:30 am

2 stops20h 50m

Porto

Tue 5/20

6:00 am-9:53 pm

2 stops20h 53m

$653

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 5/11

12:35 pm-7:35 am

2 stops14h 00m

Porto

Sun 5/25

8:15 am-7:07 pm

2 stops15h 52m

$657

Washington, D.C.Ponta Delgada

IAD - PDL

IADPDL

Washington, D.C. Dulles Intl

Tue 5/6

5:00 pm-2:40 pm

1 stop17h 40m

Ponta Delgada Nordela

Fri 5/16

6:30 am-4:20 pm

1 stop13h 50m

$657

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 5/28

10:20 pm-11:10 pm

1 stop19h 50m

Porto

Wed 6/4

8:55 am-8:50 pm

1 stop16h 55m

$659

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/23

8:45 pm-7:55 am

1 stop30h 10m

Porto

Tue 4/29

12:15 pm-4:15 pm

1 stop33h 00m

$661

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sat 6/7

6:00 am-9:35 am

1 stop22h 35m

Porto

Fri 11/14

6:00 am-7:57 pm

2 stops42h 57m

$661

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 60 results

...

Best time to book a flight from District of Columbia to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from District of Columbia 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 District of Columbia to Portugal

What is the cheapest month to book a flight from District of Columbia to Portugal?

Currently, January is the cheapest month in which you can book a flight from District of Columbia to Portugal (average of $612). Flying from District of Columbia 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 DC to PT?

When flying from District of Columbia to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Read through reviews of airlines operating flights from District of Columbia to Portugal, such as Delta, Porter Airlines and KLM. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,916 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

7,916 reviews

Delta

8.0

Very good

7,916 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

281 reviews

Delta

8.0

Very good

7,916 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

1,326 reviews

Delta

8.0

Very good

7,916 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 France

7.5

Good

1,435 reviews

Delta

8.0

Very good

7,916 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

1,580 reviews

Delta

8.0

Very good

7,916 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 District of Columbia to Portugal one-way?
One-way options have recently been found by users for as low as $392 on Royal Air Maroc. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $397 and British Airways from $497 one-way.
Can I find deals for flights from District of Columbia to Portugal that include hotel bookings?
Yes. In addition to deals on District of Columbia to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Portugal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Portugal.
Can I find deals for business class flights from District of Columbia to Portugal?
Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Portugal?
Currently, January is the cheapest month in which you can book a flight from District of Columbia to Portugal (average of $612). Flying from District of Columbia 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 District of Columbia to Portugal

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$328	Average$381	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$422	Average$873	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$423	Average$927	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$435	Average$857	FlexibilityNo cancel fee	On-time75%
TAP AIR PORTUGAL	Cheapest$457	Average$902	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$536	Average$876	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$538	Average$1,071	FlexibilityNo cancel fee	On-time69%
Lufthansa	Cheapest$538	Average$942	FlexibilityNo cancel fee	On-time76%
British Airways	Cheapest$551	Average$1,017	FlexibilityNo cancel fee	On-time70%
Royal Air Maroc	Cheapest$552	Average$627	FlexibilityNo cancel fee	On-time75%

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$347+ Cheap flights from District of Columbia 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from District of Columbia to Portugal with Cheapflights

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Cheap flight deals from District of Columbia to Portugal

Keep the following information in mind while searching for District of Columbia to Portugal flight deals. Data was last updated April 16, 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 District of Columbia to Portugal

Cheapest flights from District of Columbia to PortugalExplore the most affordable flight options available from District of Columbia to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Explore the most affordable flight options available from District of Columbia to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from District of Columbia to Portugal that are best for you.

Best time to book a flight from District of Columbia to Portugal

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

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Portugal

What is the cheapest month to book a flight from District of Columbia to Portugal?

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

Find hourly flight availability from District of Columbia 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 16, 2025.

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

Read through reviews of airlines operating flights from District of Columbia to Portugal, such as Delta, Porter Airlines and KLM. 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 District of Columbia 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 District of Columbia to Portugal one-way?

Can I find deals for flights from District of Columbia to Portugal that include hotel bookings?

How can I find direct flights from District of Columbia to Portugal?

Can I find deals for business class flights from District of Columbia to Portugal?

What is the cheapest month to book a flight from District of Columbia to Portugal?

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 District of Columbia to Portugal

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

Top 10 airlines flying from District of Columbia to Portugal

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Cheapest flights from District of Columbia to Portugal
Explore the most affordable flight options available from District of Columbia to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 16, 2025.