What are the cheapest airlines flying from Washington, D.C. to Lisbon round-trip?

According to our current data, PLAY ($390), Icelandair ($501), and American Airlines ($507) offers the cheapest pricing from Washington, D.C. to Lisbon. PLAY is priced at 56% lower than the current average price of a flight leaving 3 months from now.

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

One-way options have recently been found by users for as low as $239 on Icelandair. Other airlines that offer cheap prices include PLAY from $295 and TAP AIR PORTUGAL from $350 one-way.

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

The most popular route from Washington, D.C. to Lisbon is Washington, D.C. Dulles Intl - Lisbon Humberto Delgado. You may also consider Washington, D.C. Reagan-National - Lisbon Humberto Delgado or Baltimore/Washington - Lisbon Humberto Delgado.

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

Before booking your flight from Washington, D.C. to Lisbon check out the most popular airlines for this route: American Airlines, British Airways or Delta.

Where are the most common layover locations when flying from Washington, D.C. to Lisbon?

Washington, D.C. to Lisbon flights have a layover in Casablanca most often.

Where are the least popular layover locations for Washington, D.C. to Lisbon flights?

Washington, D.C. to Lisbon flights that have layovers will least frequently stop in London.

What are some popular things to do or see while on a layover in Casablanca?

Sacré Coeur Church, Place Mohammed V, and Casablanca Twin Center are the most popular attractions in Casablanca if you're in need of something to do during your layover. Sacré Coeur Church, Place Mohammed V, and Casablanca Twin Center are located about 15.6 mi, 15.6 mi, and 15.3 mi, respectively from Casablanca Mohamed V. Travelers in need of a car in Casablanca can rent one for about $23 per day.

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

It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Travelers have found it’s best to book a flight 45 days in advance to save up to 63% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington, D.C. to Lisbon 1-2 weeks in advance for as low as $774, or $1,114 for flights within the next 24 hours.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to Lisbon. Flights to Lisbon from Washington, D.C. in February are about $902 on average during February, but can be found for as low as $349.

What airport do you fly into for flights to Lisbon from Washington, D.C.?

For a flight from Washington, D.C. to Lisbon, you will be flying into Humberto Delgado. Lisbon Humberto Delgado (LIS) is just 4.2 mi from the center of the city. Humberto Delgado is the only Lisbon airport and it handles 4 inbound flights from Washington, D.C. per day. 14 airlines have flights to Lisbon Humberto Delgado from Washington, D.C. on a regular basis.

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

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

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

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 Lisbon.

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

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

$239+ Flights from Washington, D.C. to Lisbon

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Cheapflights Tip: The best prices from Washington, D.C. to Lisbon Humberto Delgado are usually found in February or January, booked 44 days in advance, depart on a Monday or Tuesday and return on a Thursday

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

Round-trip from	$390 (Booking.com)
One-way from	$239 (KAYAK)
Popular in	December
Cheapest in	February
Average price	$1,218
Good round-trip deal	$612 or less
Good one-way deal	$342 or less

From Washington, D.C. (WAS) to Lisbon Humberto Delgado

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One-way flight from Washington, D.C. (WAS) to Lisbon Humberto Delgado

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Highest demand for flights based on searches. 2% potential increase in price ($21 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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

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

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

Cheapest flights from Washington, D.C. to Lisbon
Explore the most affordable flight options available from Washington, D.C. to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Sun 10/267:05 pmBWI - LIS

1 stop21h 10mPLAY

Fri 10/319:15 pmLIS - BWI

1 stop24h 40mPLAY

Deal found 6/10

$390

Wed 8/208:30 pmBWI - LIS

1 stop19h 50mIcelandair

Sun 8/2410:20 pmLIS - BWI

1 stop26h 05mIcelandair

Deal found 6/10

$501

Tue 11/46:00 pmIAD - LIS

1 stop19h 05mIberia

Thu 11/68:20 amLIS - IAD

1 stop13h 10mIberia

Deal found 6/9

$502

Sun 11/26:15 pmIAD - LIS

1 stop18h 30mAmerican Airlines

Wed 11/198:45 pmLIS - IAD

1 stop24h 45mAmerican Airlines

Deal found 6/9

$503

Mon 12/16:05 pmBWI - LIS

2 stops15h 50mAmerican Airlines

Wed 12/106:30 amLIS - BWI

2 stops17h 51mAmerican Airlines

Deal found 6/10

$507

Mon 9/15:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 9/85:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 6/9

$509

Sun 11/26:15 pmIAD - LIS

1 stop18h 30mBritish Airways

Wed 11/58:45 pmLIS - IAD

1 stop24h 45mBritish Airways

Deal found 6/9

$521

Sun 11/28:30 pmBWI - LIS

1 stop16h 15mBritish Airways

Wed 11/197:05 amLIS - BWI

1 stop16h 40mBritish Airways

Deal found 6/9

$523

Sat 11/110:12 pmDCA - LIS

1 stop30h 43mBritish Airways

Wed 11/126:30 amLIS - DCA

2 stops17h 45mBritish Airways

Deal found 6/10

$526

Sun 11/238:30 pmBWI - LIS

2 stops42h 35mIberia

Mon 12/18:45 pmLIS - BWI

2 stops51h 00mIberia

Deal found 6/10

$536

Wed 9/249:45 amIAD - LIS

2 stops31h 05mMultiple Airlines

Mon 9/2910:10 pmLIS - IAD

2 stops27h 55mMultiple Airlines

Deal found 6/10

$537

Mon 10/66:00 amDCA - LIS

2 stops35h 40mMultiple Airlines

Mon 10/1310:00 pmLIS - DCA

2 stops28h 51mMultiple Airlines

Deal found 6/11

$563

Best flights from Washington, D.C. to Lisbon
Discover carefully curated flight deals from Washington, D.C. to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Sun 10/267:05 pmBWI - LIS

1 stop21h 10mPLAY

Fri 10/319:15 pmLIS - BWI

1 stop24h 40mPLAY

Deal found 6/10

$390

Wed 8/208:30 pmBWI - LIS

1 stop19h 50mIcelandair

Sun 8/2410:20 pmLIS - BWI

1 stop26h 05mIcelandair

Deal found 6/10

$501

Mon 12/16:05 pmBWI - LIS

2 stops15h 50mAmerican Airlines

Wed 12/106:30 amLIS - BWI

2 stops17h 51mAmerican Airlines

Deal found 6/10

$507

Mon 9/15:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Mon 9/85:30 pmLIS - IAD

Nonstop8h 20mTAP AIR PORTUGAL

Deal found 6/9

$509

Sun 11/28:30 pmBWI - LIS

1 stop16h 15mBritish Airways

Wed 11/197:05 amLIS - BWI

1 stop16h 40mBritish Airways

Deal found 6/9

$523

Sun 11/238:30 pmBWI - LIS

2 stops42h 35mIberia

Mon 12/18:45 pmLIS - BWI

2 stops51h 00mIberia

Deal found 6/10

$536

Wed 9/109:45 amIAD - LIS

3 stops27h 55mMultiple Airlines

Thu 9/187:05 pmLIS - IAD

2 stops25h 45mMultiple Airlines

Deal found 6/10

$538

Mon 9/11:30 pmIAD - LIS

1 stop20h 45mTurkish Airlines

Thu 9/115:55 amLIS - IAD

1 stop18h 50mTurkish Airlines

Deal found 6/10

$597

Thu 11/2010:30 amBWI - LIS

2 stops24h 35mScandinavian Airlines

Wed 12/34:55 pmLIS - BWI

2 stops36h 17mScandinavian Airlines

Deal found 6/10

$642

Sun 11/233:00 pmDCA - LIS

1 stop12h 10mUnited Airlines

Tue 12/211:00 amLIS - DCA

2 stops29h 53mUnited Airlines

Deal found 6/10

$681

Mon 8/48:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Wed 8/1310:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 6/10

$683

Tue 11/254:00 pmDCA - LIS

1 stop12h 20mAir Canada

Thu 12/411:00 amLIS - DCA

1 stop15h 00mAir Canada

Deal found 6/10

$689

Last-minute flights from Washington, D.C. to Lisbon
Discover last-minute flight deals from Washington, D.C. to Lisbon. Data last updated June 12, 2025 and is based on user searches.

Tue 6/178:18 amIAD - LIS

3 stops17h 12mMultiple Airlines

Tue 6/2411:35 amLIS - IAD

1 stop32h 31mMultiple Airlines

Deal found 6/10

$932

Tue 6/176:50 pmDCA - LIS

2 stops33h 30mAir Canada

Fri 6/2712:55 pmLIS - DCA

1 stop24h 57mAir Canada

Deal found 6/10

$1,057

Tue 6/1711:10 amDCA - LIS

1 stop13h 20mTAP AIR PORTUGAL

Wed 6/259:05 amLIS - DCA

2 stops29h 41mTAP AIR PORTUGAL

Deal found 6/12

$1,354

Thu 6/199:05 pmIAD - LIS

1 stop15h 35mRoyal Air Maroc

Tue 6/246:40 pmLIS - IAD

1 stop29h 25mRoyal Air Maroc

Deal found 6/10

$1,140

Thu 6/194:20 pmIAD - LIS

2 stops33h 10mPorter Airlines

Thu 7/38:15 amLIS - IAD

2 stops31h 01mPorter Airlines

Deal found 6/10

$1,355

Fri 6/2010:15 amIAD - LIS

1 stop19h 50mAir Canada

Fri 6/2712:55 pmLIS - IAD

1 stop25h 42mAir Canada

Deal found 6/11

$1,160

Sat 6/218:40 pmDCA - LIS

1 stop31h 55mMultiple Airlines

Wed 6/258:15 amLIS - DCA

2 stops29h 37mMultiple Airlines

Deal found 6/11

$1,026

Sat 6/218:25 pmIAD - LIS

1 stop20h 10mAer Lingus

Fri 8/1510:15 pmLIS - IAD

1 stop25h 40mAer Lingus

Deal found 6/11

$1,157

Sat 6/213:35 pmDCA - LIS

2 stops24h 20mIcelandair

Sun 6/2910:20 pmLIS - DCA

2 stops40h 26mIcelandair

Deal found 6/10

$1,598

Sun 6/226:50 pmBWI - LIS

1 stop20h 30mPLAY

Mon 6/309:25 pmLIS - BWI

1 stop25h 15mPLAY

Deal found 6/10

$1,051

Sun 6/225:45 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Wed 7/28:15 amLIS - IAD

2 stops28h 05mTAP AIR PORTUGAL

Deal found 6/11

$1,169

Sun 6/228:30 pmBWI - LIS

2 stops18h 55mMultiple Airlines

Mon 6/304:15 pmLIS - BWI

2 stops20h 15mMultiple Airlines

Deal found 6/10

$1,177

One-way flights from Washington, D.C. to Lisbon
Search for one-way flight options from Washington, D.C. to Lisbon. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Wed 8/208:30 pmBWI - LIS

1 stop19h 50mIcelandair

Deal found 6/11

$239

Mon 7/146:20 pmBWI - LIS

1 stop10h 50mMultiple Airlines

Deal found 6/10

$249

Thu 8/216:50 pmBWI - LIS

1 stop20h 30mPLAY

Deal found 6/11

$295

Mon 8/48:30 pmIAD - LIS

2 stops18h 30mMultiple Airlines

Deal found 6/12

$347

Thu 7/1710:20 pmIAD - LIS

Nonstop7h 20mTAP AIR PORTUGAL

Deal found 6/10

$350

Sat 7/128:40 pmDCA - LIS

2 stops28h 50mMultiple Airlines

Deal found 6/12

$373

Wed 10/19:05 pmIAD - LIS

1 stop10h 10mRoyal Air Maroc

Deal found 6/11

$396

Tue 11/118:30 pmBWI - LIS

1 stop16h 15mBritish Airways

Deal found 6/10

$416

Sat 12/68:30 pmIAD - LIS

1 stop14h 35mScandinavian Airlines

Deal found 6/10

$418

Tue 11/118:30 pmBWI - LIS

2 stops21h 55mIberia

Deal found 6/10

$431

Mon 12/19:55 pmIAD - LIS

1 stop12h 00mBritish Airways

Deal found 6/10

$433

Sun 8/35:05 pmDCA - LIS

2 stops23h 25mIberia

Deal found 6/12

$438

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Sun 8/17

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Mon 9/1

9:25 pm-5:40 pm

1 stop25h 15m

$483

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Wed 8/20

8:30 pm-9:20 pm

1 stop19h 50m

Lisbon Humberto Delgado

Sun 8/24

10:20 pm-7:25 pm

1 stop26h 05m

$501

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

5:45 pm-6:05 am

Nonstop7h 20m

Lisbon Humberto Delgado

Mon 9/8

5:30 pm-8:50 pm

Nonstop8h 20m

$509

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Sat 11/1

10:12 pm-8:55 am

1 stop30h 43m

Lisbon Humberto Delgado

Wed 11/12

6:30 am-7:15 pm

2 stops17h 45m

$526

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 9/10

9:45 am-6:40 pm

3 stops27h 55m

Lisbon Humberto Delgado

Thu 9/18

7:05 pm-3:50 pm

2 stops25h 45m

$538

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 8/16

11:15 pm-9:20 pm

1 stop17h 05m

Lisbon Humberto Delgado

Sun 8/24

10:20 pm-10:10 pm

1 stop28h 50m

$551

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Mon 10/6

6:00 am-10:40 pm

2 stops35h 40m

Lisbon Humberto Delgado

Mon 10/13

10:00 pm-9:51 pm

2 stops28h 51m

$563

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Wed 8/27

8:30 pm-9:20 pm

1 stop19h 50m

Lisbon Humberto Delgado

Wed 9/3

2:00 pm-7:33 am

2 stops22h 33m

$567

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 9/1

1:30 pm-3:15 pm

1 stop20h 45m

Lisbon Humberto Delgado

Thu 9/11

5:55 am-7:45 pm

1 stop18h 50m

$597

Washington, D.C.Lisbon

DCA - LIS

DCALIS

Washington, D.C. Reagan-National

Fri 11/7

1:44 pm-7:40 am

2 stops12h 56m

Lisbon Humberto Delgado

Thu 11/13

6:30 am-4:25 pm

2 stops14h 55m

$606

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results

...

The best insider tips for Washington, D.C. to Lisbon flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to Lisbon trip

Airports

IAD

Expect long security queues at IAD, especially in the afternoon and evening. Plan extra time for check-in and security clearance.

LIS

From LIS, the metro line takes 20 minutes to reach downtown Lisbon, offering a quick and affordable option for city access.

Our travel experts

Ramsey Qubein

Expert on LIS and IAD

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

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

How far ahead should I book a flight from Washington, D.C. to Lisbon?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Lisbon (average of $612). Flying from Washington, D.C. to Lisbon in June is currently the most expensive (average of $1,136). 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 LIS?

Unlike at noon, when flights are generally more expensive, you can save up to 11% on flights from Washington, D.C. to Lisbon by exploring options for tickets in the morning.

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

Travelers seeking maximum savings on their Washington, D.C. to Lisbon flight should consider departing on Monday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon 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 Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, 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 Lisbon

See what other customers who have flown with Delta, KLM and LOT from Washington, D.C. to Lisbon have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

LOT

7.6

Good

1,077 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Cathay Pacific

7.6

Good

892 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What airport do you fly into for flights to Lisbon from Washington, D.C.?
For a flight from Washington, D.C. to Lisbon, you will be flying into Humberto Delgado. Lisbon Humberto Delgado (LIS) is just 4.2 mi from the center of the city. Humberto Delgado is the only Lisbon airport and it handles 4 inbound flights from Washington, D.C. per day. 14 airlines have flights to Lisbon Humberto Delgado from Washington, D.C. on a regular basis.
What are the cheapest airlines flying from Washington, D.C. to Lisbon round-trip?
According to our current data, PLAY ($390), Icelandair ($501), and American Airlines ($507) offers the cheapest pricing from Washington, D.C. to Lisbon. PLAY is priced at 56% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. to Lisbon one-way?
One-way options have recently been found by users for as low as $239 on Icelandair. Other airlines that offer cheap prices include PLAY from $295 and TAP AIR PORTUGAL from $350 one-way.
What are the most popular routes from Washington, D.C. to Lisbon?
The most popular route from Washington, D.C. to Lisbon is Washington, D.C. Dulles Intl - Lisbon Humberto Delgado. You may also consider Washington, D.C. Reagan-National - Lisbon Humberto Delgado or Baltimore/Washington - Lisbon Humberto Delgado.
Where are the most common layover locations when flying from Washington, D.C. to Lisbon?
Washington, D.C. to Lisbon flights have a layover in Casablanca most often.
What are some popular things to do or see while on a layover in Casablanca?
Sacré Coeur Church, Place Mohammed V, and Casablanca Twin Center are the most popular attractions in Casablanca if you're in need of something to do during your layover. Sacré Coeur Church, Place Mohammed V, and Casablanca Twin Center are located about 15.6 mi, 15.6 mi, and 15.3 mi, respectively from Casablanca Mohamed V. Travelers in need of a car in Casablanca can rent one for about $23 per day.
Where are the least popular layover locations for Washington, D.C. to Lisbon flights?
Washington, D.C. to Lisbon flights that have layovers will least frequently stop in London.
Can I find deals for flights from Washington, D.C. to Lisbon that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to Lisbon?
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 Lisbon.
Can I find deals for business class flights from Washington, D.C. to Lisbon?
Yes. Cheapflights offers flight deals from Washington, D.C. to Lisbon 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 Lisbon?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Lisbon (average of $612). Flying from Washington, D.C. to Lisbon in June is currently the most expensive (average of $1,136). 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

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Alternative routes for Washington, D.C. to Lisbon

Dulles Intl to Lisbon flights

Reagan-National to Lisbon flights

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Reagan-National to Porto flights

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Reagan-National to Ponta Delgada flights

Dulles Intl to Faro flights

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Reagan-National to Funchal flights

Reagan-National to Faro flights

Dulles Intl to Horta flights

Dulles Intl to Porto Santo flights

Dulles Intl to Lajes flights

Dulles Intl to Pico Island flights

Other flights to Lisbon

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

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$328	Average$382	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$508	Average$842	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$510	Average$851	FlexibilityNo cancel fee	On-time70%
TAP AIR PORTUGAL	Cheapest$513	Average$968	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$534	Average$1,095	FlexibilityNo cancel fee	On-time75%
Royal Air Maroc	Cheapest$552	Average$644	FlexibilityNo cancel fee	On-time75%
Air France	Cheapest$554	Average$813	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$563	Average$1,234	FlexibilityNo cancel fee	On-timeN/A
Turkish Airlines	Cheapest$586	Average$669	FlexibilityNo cancel fee	On-time77%
Iberia	Cheapest$592	Average$748	FlexibilityNo cancel fee	On-time77%

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$239+ Cheap flights from Washington, D.C. (WAS) to Lisbon (LIS)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Washington, D.C. to Lisbon Humberto Delgado are usually found in February or January, booked 44 days in advance, depart on a Monday or Tuesday and return on a Thursday

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Cheapest flights from Washington, D.C. to LisbonExplore the most affordable flight options available from Washington, D.C. to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Washington, D.C. to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

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

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

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

How far ahead should I book a flight from Washington, D.C. to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Lisbon. Price data was last updated on June 9, 2025.

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

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

Find hourly flight availability from Washington, D.C. to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

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

Rainfall in Lisbon by month

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

Temperature in Lisbon by month

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

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated June 12, 2025.

See what other customers who have flown with Delta, KLM and LOT from Washington, D.C. to Lisbon have to say. 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 Washington, D.C. to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Lisbon from Washington, D.C.?

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

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What are some popular things to do or see while on a layover in Casablanca?

Where are the least popular layover locations for Washington, D.C. to Lisbon flights?

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

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

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

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

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Alternative routes for Washington, D.C. to Lisbon

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

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Cheapest flights from Washington, D.C. to Lisbon
Explore the most affordable flight options available from Washington, D.C. to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.