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 $254 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Royal Air Maroc from $392 and Scandinavian Airlines from $416 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 $914 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 41% 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.

$647+ 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	$561 (oojo)
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.

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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 ($10 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 May 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 May 1, 2025.

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 11/208:30 pmIAD - LIS

1 stop14h 35mMultiple Airlines

Wed 12/312:50 pmLIS - IAD

2 stops33h 25mMultiple Airlines

Deal found 4/29

$582

Fri 9/197:00 pmDCA - PDL

1 stop9h 40mUnited Airlines

Wed 9/2411:00 amPDL - DCA

1 stop9h 22mUnited Airlines

Deal found 4/29

$665

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

Fri 10/1710:45 pmIAD - OPO

2 stops27h 50mIberia

Fri 10/248:15 amOPO - IAD

1 stop11h 45mIberia

Deal found 4/28

$672

Sat 7/510:10 pmIAD - OPO

1 stop27h 45mMultiple Airlines

Thu 7/1712:10 pmOPO - IAD

2 stops26h 27mMultiple Airlines

Deal found 4/30

$673

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 May 1, 2025.

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

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

Sun 7/68:30 pmIAD - OPO

2 stops20h 05mDelta

Tue 7/296:35 amOPO - IAD

1 stop17h 40mDelta

Deal found 4/30

$691

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

Fri 9/195:00 pmDCA - OPO

2 stops13h 40mIberia

Tue 9/238:15 amOPO - DCA

2 stops19h 45mIberia

Deal found 4/30

$727

Last-minute flights from District of Columbia to Portugal
Discover last-minute flight deals from District of Columbia 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

Tue 5/68:45 pmIAD - OPO

1 stop30h 00mSWISS

Mon 5/127:20 pmOPO - IAD

1 stop25h 55mSWISS

Deal found 4/29

$861

Tue 5/61:44 pmIAD - OPO

2 stops20h 46mDelta

Tue 5/1311:25 amOPO - IAD

1 stop33h 10mDelta

Deal found 4/29

$869

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 5/86:05 amDCA - OPO

3 stops35h 00mMultiple Airlines

Mon 5/1211:35 amOPO - DCA

3 stops35h 32mMultiple Airlines

Deal found 4/29

$855

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 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 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

Wed 8/68:30 pmIAD - FAO

2 stops17h 10mMultiple Airlines

Deal found 4/30

$316

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

Mon 8/2510:05 pmIAD - OPO

1 stop31h 55mScandinavian Airlines

Deal found 4/29

$416

Mon 5/266:59 amDCA - OPO

3 stops27h 36mMultiple Airlines

Deal found 4/30

$444

Mon 10/136:00 amDCA - OPO

2 stops24h 25mAir Canada

Deal found 4/29

$454

Fri 10/2410:45 pmIAD - OPO

2 stops28h 55mBritish Airways

Deal found 4/30

$456

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.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

Washington, D.C.Ponta Delgada

DCA - PDL

DCAPDL

Washington, D.C. Reagan-National

Fri 9/19

7:00 pm-8:40 am

1 stop9h 40m

Ponta Delgada Nordela

Wed 9/24

11:00 am-4:22 pm

1 stop9h 22m

$665

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 4/30

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 $1,178). 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 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

7,934 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 District of Columbia 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 Royal Air Maroc from $392 and Scandinavian Airlines from $416 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 $1,178). 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 District of Columbia 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 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 8/16. 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 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 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 May 1, 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 May 1, 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 May 1, 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 May 1, 2025.