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

For one-way options, check prices for British Airways. According to our data, you can fly for as low as $531. Users have also found prices from $538 and $547 on Finnair and Iberia, respectively.

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

Currently, February is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Reagan-National Airport (average of $278). Flying from Portugal to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). 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.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 49 days in advance, which can save you up to 74% on flights from Portugal to Washington, D.C. Reagan-National Airport compared to booking the week you need them. Waiting 49 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 $544. For sooner than that we have options available in the next 3 days from $750.

What is the cheapest month to fly from Portugal to Washington, D.C. Reagan-National Airport?

The best pricing can be found in the month of September. Prices to Washington, D.C. Reagan-National Airport from Portugal average $666. You can even find prices in September for less than $666, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $495. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Reagan-National Airport from Portugal. Flying in the targeted month can save you up to 32%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portugal to Washington, D.C. Reagan-National Airport as you normally would.

Can I find deals for flights from Portugal to Reagan-National that include hotel bookings?

Yes. In addition to deals on Portugal to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portugal to Reagan-National?

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

Can I find deals for business class flights from Portugal to Reagan-National?

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

$693+ Flights from Portugal to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Portugal to Reagan-National

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$536 (Delta)
One-way from	$388 (Mytrip)
Popular in	July
Cheapest in	September
Average price	$661

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

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

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From Portugal to Washington, D.C. Reagan-National

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One-way flight from Portugal to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 17% potential increase in price ($139 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Find flight deals from Portugal to Reagan-National

Cheapest flights from Portugal to Reagan-National
Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

vie. 5/95:00 amLIS - DCA

2 stops18h 07mDelta

dom. 5/256:55 pmDCA - LIS

2 stops14h 55mDelta

Deal found 4/16

$536

dom. 6/811:20 amOPO - DCA

1 stop15h 33mUnited Airlines

sáb. 6/217:00 amDCA - OPO

1 stop18h 55mUnited Airlines

Deal found 4/17

$543

mié. 10/86:00 amOPO - DCA

2 stops18h 44mAir Canada

mar. 10/2111:00 amDCA - OPO

2 stops19h 30mAir Canada

Deal found 4/17

$567

jue. 10/237:30 amLIS - DCA

2 stops17h 14mAir Canada

dom. 10/264:00 pmDCA - LIS

2 stops13h 20mAir Canada

Deal found 4/17

$571

vie. 5/911:25 amLIS - DCA

1 stop27h 54mUnited Airlines

dom. 5/259:33 amDCA - LIS

1 stop17h 47mUnited Airlines

Deal found 4/17

$574

mié. 10/2212:45 pmLIS - DCA

2 stops14h 34mAir France

lun. 10/2712:59 pmDCA - LIS

2 stops15h 01mAir France

Deal found 4/17

$581

jue. 10/2312:45 pmLIS - DCA

1 stop14h 08mVirgin Atlantic

lun. 10/273:30 pmDCA - LIS

1 stop13h 30mVirgin Atlantic

Deal found 4/17

$606

vie. 5/212:45 pmLIS - DCA

1 stop15h 59mKLM

mar. 5/64:55 pmDCA - LIS

1 stop12h 50mKLM

Deal found 4/16

$635

mar. 4/227:15 amLIS - DCA

2 stops17h 44mBritish Airways

dom. 4/273:54 pmDCA - LIS

1 stop12h 11mBritish Airways

Deal found 4/17

$651

mar. 7/2911:05 amLIS - DCA

2 stops24h 44mAmerican Airlines

mié. 8/136:28 amDCA - LIS

1 stop21h 37mAmerican Airlines

Deal found 4/17

$715

vie. 5/96:35 amLIS - DCA

2 stops21h 01mIberia

vie. 5/231:15 pmDCA - LIS

2 stops13h 30mIberia

Deal found 4/17

$727

sáb. 8/166:35 amLIS - DCA

2 stops21h 26mMultiple Airlines

sáb. 8/234:13 pmDCA - LIS

1 stop11h 52mMultiple Airlines

Deal found 4/17

$730

Best flights from Portugal to Reagan-National
Discover carefully curated flight deals from Portugal to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated abril 17, 2025.

vie. 5/95:00 amLIS - DCA

2 stops18h 07mDelta

dom. 5/256:55 pmDCA - LIS

2 stops14h 55mDelta

Deal found 4/16

$536

dom. 6/811:20 amOPO - DCA

1 stop15h 33mUnited Airlines

sáb. 6/217:00 amDCA - OPO

1 stop18h 55mUnited Airlines

Deal found 4/17

$543

mié. 10/86:00 amOPO - DCA

2 stops18h 44mAir Canada

mar. 10/2111:00 amDCA - OPO

2 stops19h 30mAir Canada

Deal found 4/17

$567

vie. 5/910:00 amLIS - DCA

1 stop17h 45mVirgin Atlantic

dom. 5/256:55 pmDCA - LIS

1 stop10h 50mVirgin Atlantic

Deal found 4/17

$633

vie. 5/212:45 pmLIS - DCA

1 stop15h 59mKLM

mar. 5/64:55 pmDCA - LIS

1 stop12h 50mKLM

Deal found 4/16

$635

mar. 7/2911:05 amLIS - DCA

2 stops24h 44mAmerican Airlines

mié. 8/136:28 amDCA - LIS

1 stop21h 37mAmerican Airlines

Deal found 4/17

$715

vie. 5/96:35 amLIS - DCA

2 stops21h 01mIberia

vie. 5/231:15 pmDCA - LIS

2 stops13h 30mIberia

Deal found 4/17

$727

sáb. 8/166:35 amLIS - DCA

2 stops21h 26mMultiple Airlines

sáb. 8/234:13 pmDCA - LIS

1 stop11h 52mMultiple Airlines

Deal found 4/17

$730

mié. 5/286:25 pmLIS - DCA

2 stops33h 20mScandinavian Airlines

lun. 6/26:05 amDCA - LIS

2 stops33h 35mScandinavian Airlines

Deal found 4/16

$907

vie. 5/911:25 amLIS - DCA

1 stop15h 28mUnited Airlines

dom. 5/259:33 amDCA - LIS

1 stop17h 47mUnited Airlines

Deal found 4/17

$574

mié. 10/86:10 pmOPO - DCA

1 stop18h 59mTAP AIR PORTUGAL

mar. 10/211:45 pmDCA - OPO

2 stops19h 20mTAP AIR PORTUGAL

Deal found 4/17

$1,148

mar. 8/122:25 pmLIS - DCA

2 stops37h 34mLOT

mié. 10/15:15 pmDCA - LIS

2 stops39h 10mLOT

Deal found 4/16

$1,209

Last-minute flights from Portugal to Reagan-National
Discover last-minute flight deals from Portugal to Reagan-National. Data last updated abril 17, 2025 and is based on user searches.

mar. 4/225:40 amLIS - DCA

2 stops18h 19mDelta

dom. 4/2711:00 amDCA - LIS

2 stops16h 50mDelta

Deal found 4/17

$640

mar. 4/227:15 amLIS - DCA

2 stops17h 44mBritish Airways

dom. 4/273:54 pmDCA - LIS

1 stop12h 11mBritish Airways

Deal found 4/17

$651

mar. 4/2212:45 pmLIS - DCA

1 stop32h 06mVirgin Atlantic

dom. 4/274:55 pmDCA - LIS

1 stop12h 50mVirgin Atlantic

Deal found 4/17

$682

vie. 5/212:45 pmLIS - DCA

1 stop15h 59mKLM

mar. 5/64:55 pmDCA - LIS

1 stop12h 50mKLM

Deal found 4/16

$635

vie. 5/95:00 amLIS - DCA

2 stops18h 07mDelta

dom. 5/255:00 pmDCA - LIS

2 stops16h 50mDelta

Deal found 4/16

$536

vie. 5/911:25 amLIS - DCA

1 stop27h 54mUnited Airlines

dom. 5/259:33 amDCA - LIS

1 stop17h 47mUnited Airlines

Deal found 4/17

$574

vie. 5/910:00 amLIS - DCA

1 stop17h 45mVirgin Atlantic

dom. 5/256:55 pmDCA - LIS

1 stop10h 50mVirgin Atlantic

Deal found 4/17

$633

vie. 5/96:35 amLIS - DCA

2 stops21h 01mIberia

vie. 5/231:15 pmDCA - LIS

2 stops13h 30mIberia

Deal found 4/17

$727

vie. 5/96:35 amLIS - DCA

2 stops14h 20mAmerican Airlines

dom. 5/2510:15 pmDCA - LIS

1 stop29h 50mAmerican Airlines

Deal found 4/16

$822

dom. 5/1110:10 pmLIS - DCA

2 stops26h 33mMultiple Airlines

dom. 5/2511:00 amDCA - LIS

3 stops27h 15mMultiple Airlines

Deal found 4/16

$830

dom. 5/188:15 amOPO - DCA

2 stops15h 52mAmerican Airlines

lun. 6/212:35 pmDCA - OPO

2 stops14h 00mAmerican Airlines

Deal found 4/17

$794

dom. 5/188:35 pmOPO - DCA

2 stops31h 01mIberia

lun. 6/21:15 pmDCA - OPO

2 stops13h 20mIberia

Deal found 4/17

$799

One-way flights from Portugal to Reagan-National
Search for one-way flight options from Portugal to Reagan-National. Find affordable one-way fares based on user searches. Data last updated abril 17, 2025.

mié. 5/219:40 amLIS - DCA

3 stops41h 13mMultiple Airlines

Deal found 4/16

$388

dom. 6/298:25 amOPO - DCA

1 stop30h 53mMultiple Airlines

Deal found 4/17

$463

sáb. 9/2012:30 pmLIS - DCA

2 stops15h 30mBritish Airways

Deal found 4/16

$531

sáb. 5/2410:40 amOPO - DCA

2 stops16h 56mBritish Airways

Deal found 4/17

$533

sáb. 5/177:10 amLIS - DCA

2 stops20h 26mFinnair

Deal found 4/17

$538

lun. 6/28:25 amLIS - DCA

2 stops15h 42mIberia

Deal found 4/17

$547

vie. 5/166:35 amLIS - DCA

2 stops20h 45mAmerican Airlines

Deal found 4/17

$551

dom. 6/1512:10 pmLIS - DCA

2 stops16h 46mDelta

Deal found 4/16

$589

mar. 10/712:45 pmLIS - DCA

1 stop15h 44mKLM

Deal found 4/16

$596

lun. 8/259:20 amOPO - DCA

2 stops19h 10mDelta

Deal found 4/17

$599

sáb. 5/248:15 amOPO - DCA

2 stops15h 36mIberia

Deal found 4/17

$602

lun. 6/212:20 pmOPO - DCA

2 stops35h 47mAmerican Airlines

Deal found 4/17

$617

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

vie. 5/9

5:00 am-6:07 pm

2 stops18h 07m

Washington, D.C. Reagan-National

dom. 5/25

5:00 pm-2:50 pm

2 stops16h 50m

$536

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

dom. 6/8

11:20 am-9:53 pm

1 stop15h 33m

Washington, D.C. Reagan-National

sáb. 6/21

7:00 am-6:55 am

1 stop18h 55m

$543

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

mié. 10/8

6:00 am-7:44 pm

2 stops18h 44m

Washington, D.C. Reagan-National

mar. 10/21

11:00 am-11:30 am

2 stops19h 30m

$567

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

vie. 5/9

11:25 am-9:53 pm

1 stop15h 28m

Washington, D.C. Reagan-National

dom. 5/25

9:33 am-8:20 am

1 stop17h 47m

$574

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

jue. 5/22

11:25 am-9:53 pm

1 stop15h 28m

Washington, D.C. Reagan-National

dom. 5/25

6:59 am-11:05 am

1 stop23h 06m

$612

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

vie. 5/9

10:00 am-10:45 pm

1 stop17h 45m

Washington, D.C. Reagan-National

dom. 5/25

6:55 pm-10:45 am

1 stop10h 50m

$633

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

vie. 5/2

12:45 pm-11:44 pm

1 stop15h 59m

Washington, D.C. Reagan-National

mar. 5/6

4:55 pm-10:45 am

1 stop12h 50m

$635

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

mar. 7/29

11:05 am-6:49 am

2 stops24h 44m

Washington, D.C. Reagan-National

mié. 8/13

6:28 am-9:05 am

1 stop21h 37m

$715

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

vie. 5/9

6:35 am-10:36 pm

2 stops21h 01m

Washington, D.C. Reagan-National

vie. 5/23

1:15 pm-7:45 am

2 stops13h 30m

$727

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

sáb. 8/16

6:35 am-11:01 pm

2 stops21h 26m

Washington, D.C. Reagan-National

sáb. 8/23

4:13 pm-9:05 am

1 stop11h 52m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 39 results

Best time to book a flight from Portugal to Reagan-National

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

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington, D.C. Reagan-National Airport

Rainfall in Reagan-National by month

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

Temperature in Reagan-National by month

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Reagan-National

Peruse reviews from past customers who have flown with Delta, KLM and LOT from Portugal to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,917 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,329 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT

7.6

Good

1,065 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.5

Good

1,435 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines to fly from Portugal to Washington, D.C. Reagan-National Airport one-way?
For one-way options, check prices for British Airways. According to our data, you can fly for as low as $531. Users have also found prices from $538 and $547 on Finnair and Iberia, respectively.
Can I find deals for flights from Portugal to Reagan-National that include hotel bookings?
Yes. In addition to deals on Portugal to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Reagan-National.
Can I find deals for business class flights from Portugal to Reagan-National?
Yes. Cheapflights offers flight deals from Portugal to Reagan-National by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portugal to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Portugal to Washington, D.C. Reagan-National Airport (average of $278). Flying from Portugal to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $345). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Woodbridge

Rockville

Fredericksburg

Gaithersburg

Silver Spring

Linthicum Heights

Falls Church

Laurel

Easton

Herndon

Bowie

Gettysburg

National Harbor

Oxon Hill

Reston

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$388+ Cheap flights from Portugal to Reagan-National (DCA)

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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Portugal to Reagan-National

Keep the following information in mind while searching for Portugal to Reagan-National flight deals. Data was last updated abril 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portugal to Reagan-National

Cheapest flights from Portugal to Reagan-NationalExplore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Portugal to Reagan-National

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

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington, D.C. Reagan-National Airport

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

Reviews of airlines servicing Reagan-National

Peruse reviews from past customers who have flown with Delta, KLM and LOT from Portugal to Washington, D.C. to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Reagan-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

Can I find deals for flights from Portugal to Reagan-National that include hotel bookings?

How can I find direct flights from Portugal to Reagan-National?

Can I find deals for business class flights from Portugal to Reagan-National?

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

Traveling to a place near Portugal?

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Alternative routes for Portugal to Reagan-National

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Cheapest flights from Portugal to Reagan-National
Explore the most affordable flight options available from Portugal to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on abril 17, 2025.